OA18594A - Novel insect inhibitory proteins - Google Patents
Novel insect inhibitory proteins Download PDFInfo
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- OA18594A OA18594A OA1201800066 OA18594A OA 18594 A OA18594 A OA 18594A OA 1201800066 OA1201800066 OA 1201800066 OA 18594 A OA18594 A OA 18594A
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Abstract
Pesticidal proteins exhibiting toxic activity against Lepidopteran pest species are disclosed, and include, but are not limited to, TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL. DNA constructs are provided which contain a recombinant nucleic acid sequence encoding one or more of the disclosed pesticidal proteins. Transgenic plants, plant cells, seed, and plant parts resistant to Lepidopteran infestation are provided which contain recombinant nucleic acid sequences encoding the pesticidal proteins of the present invention. Methods for detecting the presence of the recombinant nucleic acid sequences or the proteins of the present invention in a biological sample, and methods of controlling Lepidopteran species pests using any of the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL pesticidal proteins are also provided.
Description
NOVELINSECT INHIBITORY PROTEINS
REFERENCE TO RELATED APPLICATION [0001] This application daims the benefit of United States Provisional Application No. 62/210,737, filed August 27, 2015, which is herein încorporated by reference in its entirety.
INCORPORATION OF SEQUENCE LISTING [0002] The file named “38-21_61627US0001SEQLISTING_ST25.txt” containing a computer-readable form of the Sequence Listing was created on August 3, 2016, This file is 94,508 bytes (measured in MS-Windows®), filed contemporaneously by electronic submission (using the United States Patent Office EFS-Web filing system), and încorporated herein by reference in its entirety.
FIELD OFTHE INVENTION [0003] The invention generally relates to the field of insect inhibitory proteins. A novel class of proteins exhibiting insect inhibitory activity against agriculturally-relevant pests of crop plants and seeds are disclosed. In particular, the disclosed class of proteîns is insecticidally active against agriculturally-relevant pests of crop plants and seeds, particularly Lepidopteran species of insect pests. Plants, plant parts, and seeds containing a recombinant polynucleotide construct encoding one or more ofthe disclosed toxin proteins are provided.
BACKGROUND OFTHE INVENTION [0004] Improving crop yield from agriculturally significant plants including, among others, com, soybean, sugarcane, rice, wheat, vegetables, and cotton, has become increasingly important. In addition to the growîng need for agricultural products to feed, clothe and provide energy for a growing human populatiort, climate-related effects and pressure from the growing population to use land other than for agricultural practices are predicted to reduce the amount of arable land available for farming. These factors hâve led to grim forecasts of food security, particularly in the absence of major improvements in plant biotechnology and agronomie practices. In light of these pressures, environmentally sustainable improvements in technology, agricultural techniques, and pest management are vital tools to expand crop production on the limited amount of arable land available for farming.
l· [0005] Insects, particularly insects within the order Lepîdoptera and Coleoptera, are considered a major cause of damage to field crops, thereby decreasing crop yields over infested areas. Lepidopteran pest specïes which negatively impact agriculture include, but are not limited to, Black armyworm (Spodoptera exempta), Black cutworm (Agrotis ipsilori), Com earworm (Helicoverpa zea), Cotton leaf worm (Alabama argillacea), Diamondback moth (Plutella xylostella), European com borer (Ostrinia nubilalis), Fall armyworm (Spodoptera frugiperda), CrylFal résistant Fall armyworm (Spodoptera frugiperda), Old World bollworm (OWB, Helicoverpa armigera), Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis irtcludens), Spotted bollworm (Earias vittella), Southwestem com borer (Diatraea grandiosella), Tobacco budworm (Heliothis virescens), Tobacco cutworm (Spodoptera litura, also known as cluster caterpillar), Western bean cutworm (Striacosta albicosta), and Velvet bean caterpillar (Anticarsia gemmatalis).
[0006[ Historically, the intensive application of synthetic chemical insecticides was relied upon as the pest control agent in agriculture. Concems for the environment and human health, in addition to emerging résistance issues, stimulated the research and development of biological pesticides. This research effort led to the progressive discovery and use of various entomopathogenic microbial species, including bacteria.
[0007] The biological control paradigm shifted when the potential of entomopathogenic bacteria, especially bacteria belonging to the genus Bacillus, was discovered and developed as a biological pest control agent. Strains of the bacterium Bacillus thuringiensis (Bt) hâve been used as a source for pesticidal proteins since it was discovered that Bt strains show a high toxicity against spécifie insects. Bt strains are known to produce delta-endotoxins that are localized within parasporal crystalline inclusion bodies at the onset of sporulation and during the stationary growth phase (e.g,, Cry proteins), and are also known to produce secreted insecticidal protein. Upon ingestion by a susceptible insect, delta-endotoxins as well as secreted toxins exert their efTects at the surface of the midgut epithelium, disrupting the cell membrane, leading to cell disruption and death. Genes encoding insecticidal proteins hâve also been identified in bacterial species other than Bt, induding other Bacillus and a diversity of additional bacterial species, such as Brevibacilhts laterosporus, Lysinibacillus sphaericus (“Ls” formerly known as Bacillus sphaericus) and Paenibacillus popilliae.
[0008] Crystalline and secreted soluble insecticidal toxins are highly spécifie for their hosts and hâve gained worldwide acceptance as alternatives to chemical insecticides. For example, insecticidal toxin proteins hâve been employed in various agricultural applications to protect agriculturally important plants from insect infestations, decrease the need for chemical pesticide applications, and increase yields. Insecticidal toxin proteins are used to control agriculturally-relevant pests of crop plants by mechanical methods, such as spraying to disperse microbial formulations containing various bacteria strains onto plant surfaces, and by using genetic transformation techniques to produce transgenîc plants and seeds expressing insecticidal toxin protein.
10009J The use of transgenîc plants expressing insecticidal toxin proteins has been globally adapted. For example, in 2012, 26.1 million hectares were planted with transgenîc crops expressing Bl toxins (James, C., Global Status of Commercialized Biotech/GM Crops: 2012. ISAAA Brief No. 44). The global use of transgenîc insect-protected crops and the limited number of insecticidal toxin proteins used in these crops has created a sélection pressure for existing insect alleles that impart résistance to the currently-utilized insecticidal proteins.
[0010] The development of résistance in target pests to insecticidal toxin proteins créâtes the continuing need for discovery and development of new forms of insecticidal toxin proteins that are useful for managing the increase in insect résistance to transgenîc crops expressing insecticidal toxin proteins. New protein toxins with împroved efficacy and which exhibit control over a broader spectrum of susceptible insect species will reduce the number of surviving insects which can develop résistance alleles. In addition, the use in one plant of two or more transgenîc insecticidal toxin proteins toxic to the same insect pest and displaying different modes of action reduces the probability of résistance in any single target insect species.
]0011] Thus, the inventors disclose herein a novel protein toxin family from Paenibacillus popilliae, along with similar toxin proteins, variant proteins, and exemplary recombinant proteins that exhibit insecticidal activity against target Lepidopteran species, particularly against Black armyworm (Spodoptera exempta), Black cutworm (Agrotis ipsilon), Com earworm (Helicoverpa zea), Cotton leaf worm (Alabama argillacea), Diamondback moth (Phitella xylostella), European com borer (Ostrinia nubilalis), Fall armyworm (Spodoptera frttgiperda), CrylFal résistant Fall armyworm (Spodoptera frugiperda), Old World bollworm (OWB, Helicoverpa armigera), Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis includcns), Spotted bollworm (Earias vittella), Southwestem com borer (Diatraea grandîosella), Tobacco budworm (Helîothis virescens), Tobacco cutworm (Spodoptera litura, also known as cluster caterpîllar), Western bean cutworm (Striacosta albicosta), and Velvet bean caterpîllar (Anticarsia gemmatalis).
SUMMARY OFTHE INVENTION [0012] Disclosed herein is a novel group of pesticidal proteins with insect inhîbitory activity (toxin proteins), referred to herein as TIC6757, TIC7472, and TIC7473 belonging to the TIC6757 protein toxin class, which are shown to exhibit inhîbitory activity against one or more pests of crop plants. The TIC6757 protein and proteins in the TIC6757 protein toxin class can be used alone or in combination with other însecticidal proteins and toxic agents in formulations and in planta, thus providing alternatives to insecticidal proteins and insecticide chemistries currently in use in agricultural Systems.
[0013] In one embodiment, disclosed in this application is a recombinant nucleic acid molécule comprising a heterologous promoter fragment operably linked to a polynucleotide segment encoding a pesticidal protein or fragment thereof, wherein (a) said pesticidal protein comprises the amino acid sequence of SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 16, or SEQ ID NO: 18; or (b) said pesticidal protein comprises an amino acid sequence having at least 85%, or 90%, or 95%, or 98%, or 99%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO:10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO:|6, or SEQ ID NO: 18; or (c) said polynucleotide segment hybridizes to a polynucleotide having the nucléotide sequence of SEQ ID NO:3, SEQ ID NO;1, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID ΝΟ.Ί 1, SEQ ID NO:13, SEQ ID NO:I5, and SEQ ID NO:17; or (d) said polynucleotide segment encoding a pesticidal protein or fragment thereof comprises a polynucleotide sequence having at least 65%, or 70%, or 75%, or 80%, or 85%, or 90%, or 95%, or 98%, or 99%, or about 100% sequence identity to the nucléotide sequence of SEQ ID NO:3, SEQ ID NO:1, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO: 11, SEQ ID NO:13, SEQ ID NO: 15, or SEQ ID NO: 17; or (e) said recombinant nucleic acid molécule is in opérable linkage with a vector, and said vector is selected from the group consisting of a plasmid, phagemid, bacmid, cosmid, and a bacterial or yeast artificial chromosome. The recombinant nucleic acid molécule can comprise a sequence that fonctions to express the pesticidal protein in a plant; or is expressed in a plant cell to produce a pesticidally effective amount of pesticidal protein.
[0014] In another embodiment of this application are host cells comprising a recombinant' nucleic acid molécule of the application, wherein the host cell is selected from the group consisting of a bacterial and a plant cell. Contemplated bacterial host cells include Agrobacterium, Rhizobium, Bacillus, Brevibacillus, Escherichia, Pseudomonas, Klebsiella, Pantoec, and Erwinia. In certain embodiments, said Bacillus species is Bacillus cereus or Bacillus thuringiensis, said Brevibacillus is Brevibacillus laterosperous, or Escherichia is Escherichia coli. Contemplated plant host cells include a dicotyledonous plant cell and a monocotyledonous plant cell. Contemplated plant cells further include an alfalfa, banana, barley, bean, broccoli, cabbage, brassica, carrot, cassava, castor, cauliflower, celery, chickpea, Chinese cabbage, citrus, coconut, coffee, com, clover, cotton (Gossypium sp.), a cucurbit, cucumber, Douglas fir, eggplant, eucalyptus, flax, garlic, grape, hops, leek, lettuce, Loblolly pine, millets, melons, nut, oat, olive, onion, omamental, palm, pasture grass, pea, peanut, pepper, pigeonpea, pine, potato, poplar, pumpkin, Radiata pine, radish, rapeseed, rice, rootstocks, rye, safïlower, shrub, sorghum, Southem pine, soybean, spinach, squash, strawberry, sugar beet, sugarcane, sunflower, sweet com, sweet gum, sweet potato, switchgrass, tea, tobacco, tomato, triticale, turf grass, watermelon, and wheat plant cell.
[0015] In another embodiment, the pesticidal protein exhibits activity against Lepidopteran insects, including Velvet bean caterpillar, Sugarcane borer , Lesser comstalk borer, Com earworm, Tobacco budworm, Soybean looper, Black armyworm, Southem armyworm , Fait armyworm, Beet armyworm, Old World bollworm, Oriental leaf worm, Pink bollworm,
Black cutworm, Southwestem Com Borer, Cotton leaf worm, Diamond back moth, Spotted bowl worm, Tobacco eut worm, Western bean cutworm, and European com borer.
[0016] Also contemplated in this application are plants comprising a recombinant nucleic acid molécule comprising a heterologous promoter fragment operably linked to a polynucleotîde segment encoding a pesticidal protein or fragment thereof, wherein: (a) said pesticidal protein comprises the amino acid sequence of SEQ ID NO:4, SEQ ID NO;2, SEQ ID NO:8, SEQ ID NO: 12, SEQ ID NO: 16, or SEQ ID NO: 18; or (b) said pesticidal protein comprises an amino acid sequence having at least 85%, or 90%, or 95%, or 98%, or 99%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO:12, SEQ ID NO:I6, or SEQ ID NO:I8; or (c) said polynucleotîde segment hybridizes under stringent hybridization conditions to the compliment of the nucléotide sequence of SEQ ID NO:3, SEQ ID NO:15, or SEQ ID NO:17; or (d) said plant exhibits a détectable amount of said pesticidal protein. In certain embodiments, the pesticidal protein comprises SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO:I2, SEQ ID NO:16, or
SEQ ID NO: 18. In one embodiment, the plant is either a dicotyledonous plant or a monocotyledonous plant. In another embodiment, the plant is further selected from the
group consisting of an alfalfa, banana, barley, bean, broccoli, cabbage, brassica, carrot, cassava, castor, caufiflower, celery, chickpea, Chinese cabbage, citrus, coconut, coffee, corn, clover, cotton, a cucurbit, cucumber, Douglas fir, eggplant, eucalyptus, flax, garfic, grape, hops, leek, lettuce, Loblolly pine, millets, melons, nut, oat, olive, onion, omamental, palm, pasture grass, pea, peanut, pepper, pigeon pea, pine, potato, poplar, pumpkin, Radiata pine, radish, rapeseed, rice, rootstocks, rye, safllower, shrub, sorghum, Southem pine, soybean, spinach, squash, strawberry, sugar beet, sugarcane, sunflower, sweet corn, sweet gum, sweet potato, switchgrass, tea, tobacco, tomato, triticale, turf grass, watermelon, and wheat.
[0017] In further embodiments, seeds comprising the recombinant nucleic acid molécules are disclosed.
[0018] In another embodiment, an insect inhibitory composition comprising the recombinant nucleic acid molécules disclosed in this application are contemplated. The insect inhibitory composition can further comprise a nucléotide sequence encoding at least one other pesticidal agent that is different from said pesticidal protein. In certain embodiments, the at least one other pesticidal agent is selected from the group consisting of an insect inhibitory protein, an insect inhibitory dsRNA molécule, and an ancillary protein. It is also contemplated that the at least one other pesticidal agent in the insect inhibitory composition exhibits activity against one or more pest species of the orders Leptdoptera, Coleoptera, or Hemiptera. The at least one other pesticidal agent in the insect inhibitory composition is in one embodiment selected from the group consisting of a CrylA, CrylAb, CrylAc, CrylA.105, CrylAe, CrylB, CrylC, CrylC variants, CrylD, CrylE, CrylF, CrylA/F chimeras, CrylG, CrylH, Cryll, CrylJ, CrylK, CrylL, Cry2A, Cry2Ab, Cry2Ae, Cry3, Cry3A variants, Cry3B, Cry4B, Cry6, Cry7, Cry8, Cry9, CryI5, Cry34, Cry35, Cry43A, Cry43B, CrySlAal, ET29, ET33, ET34, ET35, ET66, ET70, TIC400, TIC407, TIC417, TIC431, TIC800, TIC807, TIC834, TIC853, TIC900, TIC901, TIC1201, TIC1415, TIC2160, TIC3I3I, TIC836, TIC860, TIC867, TIC869, TIC1I00, VIP3A, VIP3B, VIP3Ab, AXMI-AXMI-, AXMI-88, AXM1-97, AXM1102, AXMI-1I2, AXMI-I17, AXMI-100, AXMI-115, AXMI-1I3, and AXMI-005, AXMI134, AXMI-150, AXMI-I71, AXMI-184, AXM1-I96, AXMI-204, AXMI-207,
AXMI-209, AXMI-205, AXMI-218, AXMI-220, AXMI-22Iz, AXMI-222z, AXMI-223z, ΑΧΜΙ-224Ζ and AXMI-225z, AXMI-238, AXMI-270, AXM1-279, AXMI-345, AXMI335.AXMI-RI and variants thereof, IP3 and variants thereof, DIG-3, DIG-5, DIG-10, DIG
657 and a DIG-11 protein.
[0019] Commodity products comprising a détectable amount of the recombinant nucleic acid molécules disclosed in this application are also contemplated. Such commodity products
include commodity corn bagged by a grain handler, corn flakes, corn cakes, corn flour, corn meal, corn syrup, corn oil, corn silage, corn starch, corn cereal, and the like, and conesponding soybean, rice, wheat, sorghum, pigeon pea, peanut, fruit, melon, and vegetabie commodity products including, where applicable, juices, concentrâtes, jams, jellies, marmalades, and other edible forms of such commodity products containing a détectable amount of such polynucleotides and or polypeptides of this application, whole or processed cotton seed, cotton oil, lint, seeds and plant parts processed for feed or food, fiber, paper, biomasses, and fuel products such as fuel derived from cotton oil or pellets derived from cotton gin waste, whole or processed soybean seed, soybean oil, soybean protein, soybean meal, soybean flour, soybean flakes, soybean bran, soybean milk, soybean cheese, soybean wine, animal feed comprising soybean, paper comprising soybean, cream comprising soybean, soybean biomass, and fuel products produced using soybean plants and soybean plant parts.
[0020] Also contemplated in this application is a method of producing seed comprising the recombinant nucleic acid molécules disclosed in this application. The method comprises planting at least one of the seed comprising the recombinant nucleic acid molécules disclosed in this application; growing plant from the seed; and harvesting seed from the plants, wherein the harvested seed comprises the recombinant nucleic acid molécules in this application.
[00211 In another illustrative embodiment, a plant résistant to insect infestation, is provided wherein the cells of said plant comprise: (a) a recombinant nucleic acid molécule encoding an insecticidally effective amount of a pesticidal protein as set forth in SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO:I2, SEQ ID NO:16, or SEQ ID NO:I8; or (b) an insecticidally effective amount of a protein comprising an amino acid sequence having at least 85%, or 90%, or 95%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO:12, SEQ ID NO:I6, or SEQ ID NO:18.
[0022] Also disclosed in this application are methods for controiling a Lepidopteran species pest, and controiling a Lepidopteran species pest infestation of a plant, particularly a crop plant. The method comprises, in one embodiment, (a) contacting the pest with an insecticidally effective amount of a pesticidal proteins as set forth in SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO:12, SEQ ID NO:16, or SEQ ID NO:18; or (b) contacting the pest with an insecticidally effective amount of one or more pesticidal proteins comprising an amino acid sequence having at least 85%, or 90%, or 95%, or about 100% amino acid sequence identity to identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO: 12, SEQ ID NO:16, or SEQ ID NO:18.
[0023[ Further provided herein is a method of detecting the presence of a recombinant nucleic acid molécule comprising a polynucleotide segment encoding a pesticidal protein or fragment thereof, wherein: (a) said pesticidal protein comprises the amino acid sequence of SEQ ID NO;4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 16, or SEQ ID NO: 18; or (b) said pesticidal protein comprises an amino acid sequence having at least 65%, or 70%, or 75%, or 80%, or 85%, or 90%, or 95%, or 98%, or 99%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO: 10, SEQ ID NO:12, SEQ ID NO:I4, SEQ ID NO:16, or SEQ ID ΝΟ.Ί8; or (c) said polynucleotide segment hybridizes to a polynucleotide having the nucléotide sequence of SEQ ID NO:3, SEQ ID NO:1, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO:11, SEQ ID NO:I3, SEQ ID NO:15, or SEQ ID NO: 17. In one embodiment of the invention, the method comprises contacting a sample of nucleic acids with a nucleic acid probe that hybridizes under stringent hybridization conditions with genomic DNA from a plant comprising a polynucleotide segment encoding a pesticidal protein or fragment thereof provided herein, and does not hybridize under such hybridization conditions with genomic DNA from an otherwise isogenic plant that does not comprise the segment, wherein the probe is homologous or complementary to SEQ ID NO:3, SEQ ID NO:1, SEQ ID NO:5, SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO:1I, SEQ ID NO: 13, SEQ ID NO: 15, or SEQ ID NO: 17, or a sequence that encodes a pesticidal protein comprising an amino acid sequence having at least 65%, or 70%, or 75%, or 80%, or 85%, or 90%, or 95%, or 98%, or 99%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 16, or SEQ ID NO: 18. The method may further comprise (a) subjecting the sample and probe to stringent hybridization conditions; and (b) detecting hybridization of the probe with DNA of the sample.
[0024] Also provided by the invention are methods of detecting the presence of a pesticidal protein or fragment thereof in a sample comprising protein, wherein said pesticidal protein comprises the amino acid sequence of SEQ ID NO:2; or said pesticidal protein comprises an amino acid sequence having at least 65%, or 70%, or 75%, or 80%, or 85%, or 90%, or 95%, or 98%, or 99%, or about 100% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO: 10, SEQ ID NO: 12, SEQ ID NO: 14, SEQ ID NO: 16, or SEQ ID NO: 18. In one embodiment, the method comprises: (a) contacting a sample with an immunoreactive antibody; and (b) detecting the presence of the protein. In some embodiments the step of detecting comprises an ELISA, or a Western blot.
BRIEF DESCRIPTION OF THE SEQUENCES [0025] SEQ ID NO:I is a nucleic acid sequence encoding a TIC6757 pesticidal protein obtained from Paenibacilluspopilliae species DSC004343.
(0026( SEQ ID NO:2 is the amino acid sequence of the TIC6757 pesticidal protein.
[0027( SEQ ID NO:3 is a synthetic coding sequence encoding a TIC6757PL pesticidal protein designed for expression in a plant cell wherein an additional alanine codon is inserted immediately following the initiating méthionine codon.
[0028] SEQ ID NO:4 is the amino acid sequence of TIC6757PL encoded by a synthetic coding sequence designed for expression in a plant cell (SEQ ID NO:3), and wherein an additional alanine amino acid is inserted immediately following the initiating méthionine.
[0029] SEQ ID NO:5 is a nucleic acid sequence encoding a TIC6757_His pesticidal protein, wherein a nucleic acid sequence encoding a Histidine tag is operably linked 5* and in frame to the TIC6757 coding sequence.
[0030] SEQ ID NO:6 is the amino acid sequence of the TIC6757_His pesticidal protein.
[0031] SEQ ID NO:7 is a nucleic acid sequence encoding a TIC7472 pesticidal protein obtained from Paenibacillus popilliae species DSC007648.
[0032] SEQ ID NO:8 is the amino acid sequence of the TIC7242 pesticidal protein.
|0033| SEQ ID NO:9 is a nucleic acid sequence encoding a TIC7472_His pesticidal protein, wherein a nucleic acid sequence encoding a Histidine tag is operably linked 3* and in frame to the TIC7472 coding sequence.
[0034] SEQ ID NO: 10 is the amino acid sequence of the TIC7472_His pesticidal protein. [0035] SEQ ID NO:I I is a nucleic acid sequence encoding a TIC7473 pesticidal protein from an open reading frame at nucléotide position 1- 2391 and a translation termination codon.
[0036] SEQ ID NO: 12 is the amino acid sequence translation of the TIC7243 pesticidal protein obtained from Paenibacilluspopilliae species DSC008493.
[0037] SEQ ID ΝΟ.Ί3 is a recombinant nucleic acid sequence encoding a TIC7473_His pesticidal protein, wherein a nucleic acid sequence encoding a Histidine tag is operably linked 3’ and in frame to the TIC7472 coding sequence.
|0038] SEQ ID NO: 14 is the amino acid sequence translation of the TIC7473_His pesticidal protein. A [0039] SEQ ID NO; 15 is a synthetic coding sequence encoding a TIC7472PL pesticidal protein designed for expression in a plant cell wherein an additional alanine codon is inserted immediately following the initiating méthionine codon.
[0040] SEQ ID NO: 16 is the amino acid sequence of TIC7472PL encoded by a synthetic coding sequence designed for expression in a plant cell (SEQ ID NO: 15), and wherein an additional alanine amino acid is inserted immediately following the initiating méthionine.
[0041] SEQ ID NO: 17 is a synthetic coding sequence encoding a TIC7473PL pesticidal protein designed for expression in a plant cell wherein an additional alanine codon is inserted immediately following the initiating méthionine codon.
[0042] SEQ ID NO:18 is the amino acid sequence of TIC7473PL encoded by a synthetic coding sequence designed for expression in a plant cell (SEQ ID NO:17), and wherein an additional alanine amino acid is inserted immediately following the initiating méthionine.
DETAILED DESCRIPTION OF THE INVENTION [0043] The problem in the art of agriculture! pest control can be characterized as a need for new toxin proteins that are efïicacious against target pests, exhibit broad spectrum toxicity against target pest species, are capable of being expressed in plants without causing undesirable agronomie issues, and provide an alternative mode of action compared to current toxins that are used commercially in plants.
[0044J Novel pesticidal proteins exemplifîed by TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL are disclosed herein, and address each of these needs, particularly against a broad spectrum of Lepidopteran insect pests, and more particularly against Black armyworm (Spodoptera exempta), Black cutworm (Agrotis ipsilori), Com earworm (Helicoverpa zea), Cotton Ieaf worm (Alabama argillacea), Diamondback moth (Phtlella xylostella), European com borer (Ostrinia nubilalis), Fall armyworm (Spodoptera frugiperda), CrylFaI résistant Fall armyworm (Spodoptera frugiperda), Old World boHworm (OWB, Helicoverpa armigera), Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis includens), Spotted bollworm (Earias vittella), Southwestem com borer (Diatraea grandiosella), Tobacco budworm (Heliothis virescens), Tobacco cutworm (Spodoptera litura, also known as cluster caterpillar), Western bean cutworm (Striacosta albicosta), and Velvet bean caterpillar (Anticarsia gemmatalis).
[0045] Reference in this application to TIC6757, “TIC6757 protein”, “TIC6757 protein toxin”, ‘TIC6757 toxin protein”, “TIC6757 pesticidal protein”, *TIC6757-reIated toxins”, “TIC6757-related toxin proteins”, TIC6757PL, “TIC6757PL protein”, “TIC6757PL protein toxin”, “TIC6757PL toxin protein, “TIC6757PL pesticidal protein”, “TIC6757PL-related toxins”, “TIC6757PL-related toxin proteins”, TIC7472, “TIC7472 protein”, “TIC7472 protein toxin”, “TIC7472 toxin protein”, “TIC7472 pesticidal protein”, “TIC7472-related toxins”, “TIC7472-related toxin proteins”, TIC7472PL, “TIC7472PL protein”, “TIC7472PL 5 protein toxin”, “TIC7472PL toxin protein”, “TIC7472PL pesticidal protein”, “TIC7472PLrelated toxins”, **TIC7472PL-related toxin proteins”, TIC7473, “TIC7473 protein”, “TIC7473 protein toxin”, “TIC7473 toxin protein”, “TIC7473 pesticidal protein”, “TIC7473-related toxins”, “TIC7473-related toxin proteins”, TIC7473PL, “TIC7473PL protein”, “TIC7473PL protein toxin, “TIC7473PL toxin protein”, “TIC7473PL pesticidal protein”, “TIC7473PL10 related toxins, “TIC7473PL-related toxin proteins”, and the like, refer to any novel pesticidal protein or insect inhibitory protein, that comprises, that consists of, that is substantially homologous to, that is similar to, or that is derived from any pesticidal protein or insect inhibitory protein sequence of TIC6757 (SEQ ID NO:2), TIC6757PL (SEQ ID NO:4), TIC7472 (SEQ ID NO:8). TIC7472PL (SEQ ID NO: 16), TIC7473 (SEQ ID NO:12), 15 or TIC7473PL (SEQ ID NO: 18) and pesticidal or insect inhibitory segments thereof, or combinations thereof, that confer activity against Lepidopteran pests, including any protein exhibiting pesticidal or insect inhibitory activity if alignment of such protein with TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL results in amino acid sequence identity of any fraction percentage form about 85% to about 100% percent. The TIC6757 20 and TIC6757PL proteins include both the plastid-targeted and non-plastid targeted form of the proteins.
[0046] The term “segment” or “fragment” is used in this application to describe consecutive amino acid or nucleic acid sequences that are shorter than the complété amino acid or nucleic acid sequence describing a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or 25 TIC7473PL protein. A segment or fragment exhibiting insect inhibitory activity is also disclosed in this application if alignment of such segment or fragment, with the corresponding section ofthe TIC6757 protein set forth in SEQ ID NO:2, T1C6757PL protein set forth in SEQ ID NO:4, TIC7472 protein set forth in SEQ ID NO:8, TIC7472PL protein set forth in SEQ ID NO: 16, TIC7473 protein set forth in SEQ ID NO: 12, or TIC7473PL 30 protein set forth in SEQ ID NO: 18, results in amino acid sequence identity of any fraction percentage from about 85 to about 100 percent between the segment or fragment and the corresponding section of the TIC6757, TIC6757PL, TIC7472, TIC7472PL, T1C7473, or TIC7473PL protein.
[0047] Reference in this application to the terms “active” or “activity”, “pesticidal activity” or “pesticidal” or “insecticidal activity”, “insect inhibitory” or “insecticidal” refer to efficacy of a toxic agent, such as a protein toxin, in inhibiting (inhibiting growth, feeding, fecundity, or viability), suppressing (suppressing growth, feeding, fecundity, or viabïlity), controlling 5 (controlling the pest infestation, controlling the pest feeding activities on a particular crop containing an effective amount of the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TÏC7473, or TIC7473PL protein) or killing (causing the morbidity, mortality, or reduced fecundity of) a pest. These terms are întended to include the resuit of providing a pesticidally effective amount of a toxic protein to a pest where the exposure of the pest to the toxic 10 protein results in morbidity, mortality, reduced fecundity, or stunting. These terms also include repulsion of the pest from the plant, a tissue of the plant, a plant part, seed, plant cells, or from the particular géographie location where the plant may be growing, as a resuit of providing a pesticidally effective amount of the toxic protein in or on the plant. In general, pesticidal activity refers to the ability of a toxic protein to be effective in inhibiting the 15 growth, development, viability, feeding behavior, mating behavior, fecundity, or any measurable decrease in the adverse effects caused by an insect feeding on this protein, protein fragment, protein segment or polynucleotide of a particular target pest, including but not limited to insects of the order Lepidoptera. The toxic protein can be produced by the plant or can be applied to the plant or to the environment within the location where the plant is 20 located. The terms “bioactivity”, “effective, “efficacious” or variations thereof are also terms interchangeably utilized in this application to describe the effects of proteins of the présent invention on target insect pests.
[0048] A pesticidally effective amount of a toxic agent, when provided in the diet of a target pest, exhibits pesticidal activity when the toxic agent contacts the pest. A toxic agent can be 25 a pesticidal protein or one or more chemical agents known in the art. Pesticidal or insecticidal chemical agents and pesticidal or insecticidal protein agents can be used alone or in combinations with each other. Chemical agents include but are not limited to dsRNA molécules targeting spécifie genes for suppression in a target pest, organochlorides, organophosphates, carbamates, pyrethroids, neonicotinoids, and ryanoids. Pesticidal or 30 insecticidal protein agents include the protein toxins set forth in this application, as well as other proteinaceous toxic agents including those that target Lepidopterans, as well as protein toxins that are used to control other plant pests such as Cry and Cyt proteins available in the art for use in controlling Coleopteran, Hemipteran and Homopteran species.
[0049] It is intended that reference to a pest, particularly a pest of a crop plant, means insect pests of crop plants, particularly those Lepidoptera insect pests that are controlled by the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein toxin class. However, reference to a pest can also include Coleopteran, Hemipteran and Homopteran insect pests of plants, as well as nematodes and fungi when toxic agents targetïng these pests are co-localized or présent together with the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein or a protein that is 85 to about 100 percent identical to TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL.
[0050J The TIC6757, T1C6757PL, TIC7472, TIC7472PL, T1C7473, and TIC7473PL proteins are related by a common function and exhibit insecticidal activity towards insect pests from the Lepidoptera insect species, including adults, pupae, larvae, and neonates.
[0051] The insects of the order Lepidoptera include, but are not limited to, armyworms, cutworms, toopers, and heliothines in the Family Noctuîdae, e.g., Fall armyworm (Spodoptera frugiperda), Beet armyworm (Spodoptera exigua), Black armyworm (Spodoptera exempta), Southem armyworm (Spodoptera eridania), bertha armyworm (Mamestra confïgtirata), black cutworm (Agrotis ipsilon), cabbage looper (Trichophisia ni), soybean looper (Pseudoplusia includens), velvetbean caterpillar (Anticarsia gemmatalis), green cloverworm (Hypena scabra), tobacco budworm (Heliothis viresccns), granulatc cutworm (Agrotis subterranea), armyworm (Pseudaletia uni puncta), western cutworm (Agrotis orthogonia)·, borers, casebearers, webworms, coneworms, cabbageworms and skeletonizers from the Family Pyralidae, e.g., European com borer (Ostrinia nubilalis), navel orangeworm (Amyelois transitclla), com root webworm (Crambus caliginosellus), sod webworm (Herpetogramma licarsisalis), sunflower moth (Homoeosoma electellum), fesser comstalk borer (Elasmopalpus llgnosellus); leafrollers, budworms, seed worms, and fruit worms in the Family Tortricidae, e.g., codling moth (Cydia pomonella), grape berry moth (Endopiza viteanâ), oriental fruit moth (Grapholita molesta), sunflower bud moth (Suleima helianthana); and many other economically important Lepidoptera, e.g., diamondback moth (Plutella xylostella), pink bollworm (Pectinophora gossypiella), and gypsy moth (Lymantria dispar). Other insect pests of order Lepidoptera include, e.g., cotton leaf worm (Alabama argillacea), fruit tree leaf relier (Archips argyrospila), European leafroller (Archips rosana) and other Archips species, {Chilo suppressalis, Asiatic rice borer, or rice stem borer), rice leaf relier (Cnaphalocrocls medinalis), com root webworm (Crambus caliginosellus), btuegrass webworm (Crambus teterrellus), southwestem com borer (Diatraea grandiosella), surgarcane borer (Diatraea saccharalis), spiny bollworm (Earias insulana), spotted bollworm (Earias vittella), American bollworm (Helicoverpa armigera), com earworm (Helicoverpa zea, also known as soybean podworm and cotton bollworm), tobacco budworm (Heliothis virescens), sod webworm (Herpetogramma licarsisalis), Western bean cutworm (Striacosta albicosta), European grape vine moth (Lobesia botrana), citrus Ieafminer (Phyllocnistis citrella), large white butterfly (Pieris brassicae), small white butterfly (Pieris rapae, also known as imported cabbageworm), beet armyworm (Spodoptera exigud), tobacco cutworm (Spodoptera litura, also known as cluster caterpillar), and tomato Ieafminer (Ttda absoluta).
[0052] Reference in this application to an “isolated DNA molécule, or an équivalent term or phrase, is intended to mean that the DNA molécule is one that is présent alone or in combination with other compositions, but not within its natural environment. For example, nucleic acid éléments such as a coding sequence, intron sequence, untranslated leader sequence, promoter sequence, transcriptional termination sequence, and the like, that are naturally found within the DNA of the genome of an organism are not considered to be “isolated” so long as the element is within the genome of the organism and at the location within the genome in which it is naturally found. However, each of these éléments, and subparts of these éléments, would be “isolated” within the scope of this disclosure so long as the element is not within the genome of the organism and at the location within the genome in which it is naturally found. Similarly, a nucléotide sequence encoding an insecticidal protein or any naturally occurring insecticidal variant of that protein would be an isolated nucléotide sequence so long as the nucléotide sequence was not within the DNA of the bacterium from which the sequence encoding the protein is naturally found. A synthetic nucléotide sequence encoding the amino acid sequence of the naturally occurring insecticidal protein would be considered to be isolated for the purposes of this disclosure. For the purposes of this disclosure, any transgenic nucléotide sequence, i.e., the nucléotide sequence of the DNA inserted into the genome of the cells of a plant or bacterium, or présent in an extrachromosomal vector, would be considered to be an isolated nucléotide sequence whether it is présent within the plasmid or similar structure used to transform the cells, within the genome of the plant or bacterium, or présent in détectable amounts in tissues, progeny, biological samples or commodity products derived from the plant or bacterium.
[0053] As described further in this application, an open reading frame (ORF) encoding TIC6757 (SEQ ID NO: 19) was discovered in DNA obtained from Paenibacillus popilliae strain DSC004343. The coding sequence was cloned and expressed in microbial host cells to produce recombinant proteins used in bioassays. High throughput screening and bioinformatics techniques were used to screen microbial sequences for genes encoding proteins exhibiting similarity to TIC6757. An open reading frame (ORF) encoding TIC7472 (SEQ ID NO:7) was discovered in DNA obtained from Paenibacillus popilliae strain DSC007648. An open reading frame (ORF) encoding TIC7473 (SEQ ID NO:11) was discovered in DNA obtained from Paenibacillus popilliae strain DSCOO8493. Bioassay using microbial host cell-derived proteins of TIC6757 demonstrated activity against the Lepidopteran species Beet armyworm (Spodoptera exigua), Black cutworm (Agrotis ipsilon), Corn earworm (Helicoverpa zea), Cotton leaf worm (Alabama argillacea), Diamondback moth (Plutella xylostella), European corn borer (Ostrinia nubilalis), Fall armyworm (Spodoptera frugiperda), CrylFal résistant Fall armyworm (Spodoptera frugiperda), Old World bollworm (OWB, Helicoverpa armigera), Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis includens), Spotted bollworm (Earias vittella), Southwestem corn borer (Diatraea grandiosella), Tobacco budworm (Heliothis virescens), Tobacco cutworm (Spodoptera litura, also known as cluster caterpîllar), and Velvet bean caterpillar (Anticarsia gemmatalis). Bioassay using microbial host cell-derived proteins ofTIC7472 and TIC7473 demonstrated activity against the Lepidopteran species Corn earworm (Helicoverpa zea), Fall armyworm (Spodoptera frugiperda), Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis includens), and Southwestem corn borer (Diatraea grandiosella).
J0054] For expression in plant cells, the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL proteins can be expressed to résidé in the cytosol or targeted to various organelles of the plant cell. For example, targeting a protein to the chloroplast may resuit in increased levels of expressed protein ïn a transgenic plant while preventing offphenotypes from occurring. Targeting may also resuit in an increase in pest résistance efïicacy in the transgenic event. A target peptide or transit peptide is a short (3-70 amino acids long) peptide chain that directs the transport of a protein to a spécifie région in the cell, including the nucléus, mitochondria, endoplasmic réticulum (ER), chloroplast, apoplast, peroxisome and plasma membrane. Some target peptides are cleaved from the protein by signal peptidases after the proteins are transported. For targeting to the chloroplast, proteins contain transit peptides which are around 40-50 amino acids. For descriptions of the use of chloroplast transit peptides, see U.S. Patent Nos. 5,188,642 and 5,728,925. Many chloroplast-localized pro teins are expressed from nuclear genes as precursors and are targeted to the chloroplast by a chloroplast transit peptide (CTP). Examples of such isolated chloroplast proteins include, but are not limited to, those associated with the small subunit
(SSU) of ribulose-l,5,-bisphosphate carboxylase, ferredoxin, ferredoxin oxidoreductase, the light-harvesting complex protein I and protein II, thioredoxin F, enolpyruvyl shikimate phosphate synthase (EPSPS), and transit peptides described in U.S. Patent No. 7,193,133. It has been demonstrated in vivo and in vitro that non-chloroplast proteins may be targeted to the chloroplast by use of protein fusions with a heterologous CTP and that the CTP is sufficient to target a protein to the chloroplast. Incorporation of a suitable chloroplast transit peptide such as the Arabidopsis thaliana EPSPS CTP (CTP2) (see, Klee et al., Mol. Gen. Genet. 210:437-442, 1987) or the Pétunia hybrida EPSPS CTP (CTP4) (see, deha-Cioppa et al., Proc. Natl. Acad. Sci. USA 83:6873-6877, 1986) has been shown to target heterologous EPSPS protein sequences to chloroplasts in transgenic plants (see, U.S. Patent Nos. 5,627,061; 5,633,435; and 5,312,910; and EP 0218571; EP 189707; EP 508909; and EP 924299). For targeting the TIC6757 or TIC6757PL toxin protein to the chloroplast, a sequence encoding a chloroplast transit peptide is placed 5' in opérable linkage and in frame to a synthetic coding sequence encoding the TIC6757 or TIC6757PL toxin protein that has been designed for optimal expression in plant cells.
[0055] It is contemplated that additional toxin protein sequences related to T1C6757, TIC7472, and TIC7473 can be created by using the amino acid sequence of TIC6757, TIC7472, or TIC7473 to create novel proteins with novel properties. The TIC6757, TIC7472, and TIC7473 toxin proteins can be aligned to combine différences at the amino acid sequence level into novel amino acid sequence variants and making appropriate changes to the recombinant nucleic acid sequence encoding the variants.
J0056] This disclosure further contemplâtes that improved variants of the TIC6757 protein toxin class can be engineered in planta by using various gene editing methods known in the art. Such technologies used for genome editing include, but are not limited to, ZFN (zincfinger nuclease), meganucleases, TALEN (Transcription activator-like effector nucleases), and CRISPR (Clustered Regularly Interspaced Short Palindromie Repeats)/Cas (CRISPRassociated) Systems. These genome editing methods can be used to alter the toxin protein coding sequence transformed within a plant cell to a different toxin coding sequence. Specifically, through these methods, one or more codons within the toxin coding sequence is altered to engineer a new protein amino acid sequence. Altematively, a fragment within the coding sequence is replaced or deleted, or additional DNA fragments are inserted into the coding sequence, to engineer a new toxin coding sequence. The new coding sequence can encode a toxin protein with new properties such as increased activity or spectrum against insect pests, as well as provide activity against an insect pest species wherein résistance has developed against the original insect toxin protein. The plant cell comprising the gene edited toxin coding sequence can be used by methods known in the art to generate whole plants expressing the new toxin protein.
[0057] It is also contemplated that fragments of TIC6757, TIC7472, and TIC7473 or protein variants thereof can be truncated forms wherein one or more amino acids are deleted from the N-terminal end, C-termina! end, the middle of the protein, or combinations thereof wherein the fragments and variants retain insect inhîbitory activity. These fragments can be naturally occurring or synthetic variants of TIC6757, TIC7472, and TIC7473 or derived protein variants, but should retain the insect inhîbitory activity of at least TIC6757, TIC7472, or TIC7473.
[0058] Proteins that resemble the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL proteins can be identified and compared to each other using various computer based algorithme known in the art (see Tables I and 2). Amino acid sequence identilies reported in this application are a resuit of a Clusta! W alignment using these default parameters: Weight matrix: blosum, Gap opening penalty: 10.0, Gap extension penalty: 0.05, Hydrophilic gaps: On, Hydrophilic residues: GPSNDQERK, Residue-specific gap penalties: On (Thompson, et a! (1994) Nucleic Acids Research, 22:4673-4680). Percent amino acid identity is further calculated by the product of !00% multiplied by (amino acid identities/Iength of subject protein). Other alignment algorithms are also available in the art and provide results similar to those obtained using a Clustal W alignment and are contemplated herein.
[0059] It is intended that a protein exhibiting insect inhîbitory activity against a Lepidopteran insect species is related to TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL if the protein is used in a query, e.g., in a Clustal W alignment, and the proteins of the présent invention as set forth as SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:8, SEQ ID ΝΟ.Ί6, SEQ ID NO:I2, or SEQ ID NO:I8 are identified as hits in such alignment in which the query protein exhibits at least 85% to about I00% amino acid identity along the length of the query protein that is about 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, I00%, or any fraction percentage in this range.
[0060] Exemplary proteins TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL were aligned with each other using a Clusta! W algorithm. A pair-wise matrix of percent amino acid sequence identities for each of the full-length proteine was created, as reported in Table l.
!7
Table 1. Pair-wise matrix display of exemplary proteins TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL.
Toxin | TIC6757 (SEQ ID NO:2) | TIC6757 PL (SEQ ID NO:4) | TIC7472 (SEQID NO:8) | TIC7472PL (SEQ ID NO: 16) | TIC7473 (SEQ ID NO: 12) | TIC7473PL (SEQ ID NO:18) |
TIC6757 (SEQ ID NO:2) | - | 99.9 (796) | 99.7 (795) | 99.6 (794) | 99.9 (796) | 99.7 (795) |
T1C6757 PL (SEQ ID NO:4) | 99.7 (796) | 99.5 (794) | 99.7 .(796) | 99 6 (795) | 99.9 (797) | |
TIC7472 (SEQ ID NO:8) | 99.7 (795) | 99.6 (7<M) | 99.9 (796) | 99.9 (796) | 99.7 (795) | |
TIC7472PL (SEQ ID NO:16) | 99.5 (794) | 99.7 (796) | 99.7 (796) | - | 99.6 (795) | 99.9 (797) |
TIC7473 (SEQ ID NO:I2) | 99.9 (796) | 99.7 (795) | 99.9 (796) | 99.7 (795) | 99.9 (796) | |
TIC7473PL (SEQ ID NO:I8) | 996 (795) | 99 9 (797) | 99.6 (795) | 99.9 <797> | 99.7 (796) |
Table Description: Clustal W alignment between (X) and (Y) are reported in a pair-wise matrix. The percent 10 amino acid identity between ail pairs is calculated and is represented by the first number in each box. The second number (in parenthèses) in each box represents the number of identical amino acids between the pair.
[0061] In addition to percent identity, TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, TIC7473PL and related proteins can also be related by primary structure 15 (conserved amino acid motifs), by length (about 797 amino acids), and by other characteristics. Characteristics of the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL protein toxins are reported in Table 2.
IS
Table 2. Selected charactcristics of the TIC6757, T1C6757PL, TIC7472, TIC7472PL, T1C7473, and TIC7473PL proteins.
Protein | Molecular Wdcht ifa Daltonj) | Amtno Add l*ne<h | Hodeçtriç Point | Charce at P1I 7.0 | Νθ· f Stronelv Bâtie (-1 Amino Addt | No. of Stronelv Addlc Amino Addt | No, of llvdronhoble Amino Adds | No, of F°!âr Amino Addt |
TIC6757 | 90011.21 | 797 | 4.4289 | -34 5 | 81 | 112 | 391 | 406 |
T1C6757PL | 90082.29 | 798 | 4 4289 | -34 5 | 81 | 112 | 392 | 406 |
TIC7472 | 90096.28 | 797 | 4.4141 | -35.5 | 81 | 113 | 390 | 407 |
TIC7472PL | 90167.36 | 798 | 44141 | -35.5 | 81 | 113 | 391 | 407 |
T1C7473 | 90069.25 | 797 | 44141 | -35.5 | 81 | 113 | 390 | 407 |
TIC7473PL | 90140.33 | 798 | 44141 | -35.5 | 81 | 113 | 391 | 407 |
J0062] As described further in the Examples of this application, a synthetic nucleic acid molécule sequence encoding a variant of TIC6757, TIC6757PL was designed for use in plants. An exemplary recombinant nucleic acid molécule sequence that was designed for use in plants encoding the TIC6757PL protein is presented as SEQ ID NO:3. The TIC6757PL protein has an additional alanine amino acid immediately following the initiating méthionine relative to the TIC6757 protein. The additional alanine residue inserted into the TIC6757 amino acid sequence is believed to improve expression of the protein in planta. Likewise, synthetic nucleic acid molécule sequences encoding variants of TIC7472 and TIC7473 are referred to herein as TIC7472PL and TIC7473PL, respectively, and were designed for use in plants. Exemplary synthetic nucleic acid molécule sequences that were designed for use in plants encoding TIC7472PL and TIC7473PL are presented as SEQ ID NO: 15 and SEQ ID NO: 17, respectively. Both the TIC7472PL and TIC7473PL proteins hâve an additional alanine amino acid immediately following the initiating méthionine relative to the TIC7472 and TIC7473 proteins.
[0063] Expression cassettes and vectors containing a recombinant nucleic acid molécule sequence can be constructed and introduced into com, soybean or cotton plant cells in accordance with transformation methods and techniques known in the art. For example, Agrobacterium-mediated transformation is described in U.S. Patent Application Publications 2009/0138985A1 (soybean), 2008/0280361 Al (soybean), 2009/0142837A1 (com), 2008/0282432 (cotton), 2008/0256667 (cotton), 2OO3/OI1O53I (wheat), 2001/0042257 Al (sugar beet), U.S. Patent Nos. 5,750,871 (canola), 7,026,528 (wheat), and 6,365,807 (rice), and in Arencibia et al. (1998) Transgenic Res. 7:213-222 (sugarcane) ail of which are incorporated herein by reference in their entirety. Transformed cells can be regenerated into transformed plants that express TIC6757PL, TIC7472 and TIC7473 proteins and demonstrate pesticidal activity through bioassays performed in the presence of Lepidopteran pest larvae using plant leaf disks obtained from the transformed plants. Plants can be derived from the plant cells by régénération, seed, pollen, or meristem transformation techniques. Methods for transforming plants are known in the art.
[0064] As an alternative to traditional transformation methods, a DNA sequence, such as a transgene, expression cassette(s), etc., may be inserted or integrated into a spécifie site or locus within the genome of a plant or plant cell via site-directed intégration. Recombinant DNA construct(s) and molecule(s) of this disclosure may thus include a donor template sequence comprising at least one transgene, expression cassette, or other DNA sequence for insertion into the genome of the plant or plant cell. Such donor template for site-directed intégration may further include one or two homology arms flankîng an insertion sequence (i.e., the sequence, transgene, cassette, etc., to be inserted into the plant genome). The recombinant DNA construct(s) of this disclosure may further comprise an expression cassette(s) encoding a site-specific nuclease and/or any associated protein(s) to carry out sitedirected intégration. These nuclease expressing cassette(s) may be présent in the same molécule or vector as the donor template (in cis) or on a separate molécule or vector (in trans). Several methods for site-directed intégration are known in the art involving different proteins (or complexes of proteins and/or guide RNA) that eut the genomic DNA to produce a double strand break (DSB) or nick at a desired genomic site or locus. Briefly as understood in the art, during the process of repaîring the DSB or nick introduced by the nuclease enzyme, the donor template DNA may become integrated into the genome at the site of the DSB or nick. The presence of the homology arm(s) in the donor template may promote the adoption and targeting of the insertion sequence into the plant genome during the repair process through homologous recombination, although an insertion event may occur through nonhomologous end joining (NHEJ). Examples of site-specific nucleases that may be used include zinc-finger nucleases, engineered or native meganucleases, TALE-endonucleases, and RNA-guided endonucleases (e.g., Cas9 or Cpfl). For methods using RNA-guided sitespecific nucleases (e.g., Cas9 or Cpfl), the recombinant DNA construct(s) will also comprise a sequence encoding one or more guide RNAs to direct the nuclease to the desired site within the plant genome.
[0065] Recombinant nucleic acid molécule compositions that encode TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL are contemplated. For example, TIC6757, TIC6757PL, T1C7472, TIC7472PL, TIC7473, and TIC7473PL proteins can be expressed with recombinant DNA constructs in which a polynucleotide molécule with an ORF encoding the protein is operably linked to genetic expression éléments such as a promoter and any other regulatory element necessary for expression in the system for which the construct is intended. Non-limiting examples include a plant-fonctional promoter operably linked to a TIC6757PL, TIC7472PL, or TIC7473PL protein encoding sequence for expression of the protein in plants or a Æ/-fonctional promoter operably linked to a TIC6757, TIC7472, or TIC7473 protein encoding sequence for expression of the protein in a Bt bacterium or other Bacillus species. Other éléments can be operably linked to the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein encoding sequence including, but not limited to, enhancers, in irons, untranslated leaders, encoded protein immobilizatîon tags (HIS-tag), translocation peptides (i.e., plastid transit peptides, signal peptides), polypeptide sequences for post-translational modifying enzymes, ribosomal binding sites, and RNAi target sites. Exemplary recombinant polynucleotide molécules provided herewith include, but are not limited to, a heterologous promoter operably linked to a polynucleotide such as SEQ ID NO:3, SEQ ID NO:I, SIQ ID NO:7, SEQ ID NO:11, SEQ ID NO: 15, and SEQ ID NO: 17 that encodes the respective polypeptides or proteins having the amino acid sequence as set forth in SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO: 12, SEQ ID NO: 16, and SEQ ID NO: 18. A heterologous promoter can also be operably linked to synthetîc DNA coding sequences encoding a plastid targeted TIC6757PL, TIC7472PL, or TIC7473PL; or an untargeted TIC6757PL, TIC7472PL, or TIC7473PL. The codons of a recombinant nucleic acid molécule encoding for proteins disclosed herein can be substituted by synonymous codons (known in the art as a silent substitution).
[0066] A recombinant DNA construct comprising TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein encoding sequences can further comprise a région of DNA that encodes for one or more insect inhibitory agents which can be configured to concomîtantly express or co-express with a DNA sequence encoding a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein, a protein different from a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein, an insect inhibitory dsRNA molécule, or an ancillary protein. Ancillary proteins include, but are not limited to, co-factors, enzymes, binding-partners, or other agents that fonction to aid in the effectiveness of an insect inhibitory agent, for example, by aiding its expression, influencing its stability in plants, optimizing free energy for oligomérization, augmenting its toxicity, and increasing its spectrum of activity. An ancillary protein may facilitate the yjJ uptake of one or more insect inhibitory agents, for example, or potentiate the toxic effects of the toxic agent.
[00671 A recombinant DNA construct can be assembled so that ail proteins or dsRNA molécules are expressed from one promoter or each protein or dsRNA molécules is under separate promoter control or some combination thereof. The proteins of this invention can be expressed from a multi-gene expression System in which one or more proteins of TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL are expressed from a common nucléotide segment which also contains other open reading frames and promoters, depending on the type of expression System selected. For example, a bacterial multi-gene expression System can utilize a single promoter to drive expression of multiply-linked/tandem open reading frames from within a single operon (i.e., polycistronic expression). In another example, a plant multi-gene expression System can utilize multiply-unlinked or linked expression cassettes, each cassette expressing a different protein or other agent such as one or more dsRNA molécules.
[0068] Recombinant polynucleotides or recombinant DNA constructs comprising a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein encoding sequence can be delivered to host cells by vectors, e.g., a plasmid, baculovirus, synthetic chromosome, virion, cosmid, phagemid, phage, or viral vector. Such vectors can be used to achieve stable or transient expression of a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein encoding sequence in a host cell, or subséquent expression of the encoded polypeptide. An exogenous recombinant polynucleotide or recombinant DNA construct that comprises a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein encoding sequence and that is introduced into a host cell is referred in this application as a “transgene”.
[0069] Transgenîc bacteria, transgenîc plant cells, transgenîc plants, and transgenîc plant parts that contain a recombinant polynucleotide that expresses any one or more of TIC6757 or a related family toxin protein encoding sequence are provided herein. The term “bacterial cell” or “bacterium” can include, but is not limited to, an Agrobacterium, a Bacillus, an Escherichia, a Salmonella, a Pseudomonas, Brevibacillus, Klebsiella, Erwinia, or a Rhizobium cell. The term “plant cell” or “plant” can include but is not limited to a dicotyledonous or monocotyledonous plant. The term “plant cell” or “plant” can also include but is not limited to an alfalfa, banana, barley, bean, broccoli, cabbage, brassica, carrot, cassava, castor, cauliflower, celery, chickpea, Chinese cabbage, citrus, coconut, coffee, corn, clover, cotton, a cucurbit, cucumber, Douglas fir, eggplant, eucalyptus, flax, garlic, grape, hops, leek, lettuce, Loblolly pine, millets, melons, nut, oat, olive, onion, omamental, palm, pasture grass, pea, peanut, pepper, pigeonpea, pine, potato, poplar, pumpkin, Radiata pine, radish, rapeseed, rice, rootstocks, rye, safflower, shrub, sorghum, Southem pine, soybean, spinach, squash, strawberry, sugar bect, sugarcane, sunflower, sweet corn, sweet gum, sweet potato, switchgrass, tea, tobacco, tomato, tritîcale, turf grass, watermelon, and wheat plant cell or plant. In certain embodiments, transgenic plants and transgenic plant parts regenerated from a transgenic plant cell are provided. In certain embodiments, the transgenic plants can be obtained from a transgenic seed, by cutting, snapping, grinding or otherwise disassociating the part from the plant. In certain embodiments, the plant part can be a seed, a boll, a leaf, a flower, a stem, a root, or any portion thereof, or a non-regenerable portion of a transgenic plant part. As used in this context, a “non-regenerable” portion of a transgenic plant part is a portion that can not be induced to form a whole plant or that can not be induced to form a whole plant that is capable of sexual and/or asexual reproduction. In certain embodiments, a non-regenerable portion of a plant part is a portion of a transgenic seed, boll, leaf, flower, stem, or root.
[0070] Methods of making transgenic plants that comprise insect, Lepidoptera-inhibitory amounts of a T1C6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein are provided. Such plants can be made by introducing a recombinant polynucleotîde that encodes any of the proteins provided in this application into a plant cell, and selecting a plant derived from said plant cell that expresses an insect, Lepidoptera-inhibitory amount of the proteins. Plants can be derived from the plant cells by régénération, seed, pollen, or meristem transformation techniques. Methods for transforming plants are known in the art.
[0071] Processed plant products, wherein the processed product comprises a détectable amount of a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein, an insect inhibitory segment or fragment thereof, or any distinguishing portion thereof, are also disclosed herein. In certain embodiments, the processed product is selected from the group consisting of plant parts, plant biomass, oil, meal, sugar, animal feed, flour, flakes, bran, lint, hulls, processed seed, and seed. In certain embodiments, the processed product is non-regenerable. The plant product can comprise commodity or other products of commerce derived from a transgenic plant or transgenic plant part, where the commodity or other products can be tracked through commerce by detecting nucléotide segments or expressed RNA or proteins that encode or comprise distinguishing portions of a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein.
(00721 Plants expressing the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL proteins can be crossed by breeding with transgenic events expressing other toxin proteins and/or expressing other transgenic traits such as herbicide tolérance genes, genes conferring yield or stress tolérance traits, and the like, or such traits can be combined in a single vector so that the traits are ail linked.
I0073J As further described in the Examples, TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL protein-encoding sequences and sequences having a substantial percentage identity to TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL can be identified using methods known to those of ordinary skill in the art such as polymerase chain reaction (PCR), thermal amplification and hybridization. For example, the proteins TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL can be used to produce antibodies that bind specîfically to related proteins, and can be used to screen for and to fïnd other protein members that are closely related.
[0074] Furthermore, nucléotide sequences encoding the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, and TIC7473PL toxin proteins can be used as probes and primers for screening to îdentify other members of the class using thermal-cycle or isothermal amplification and hybridization methods. For example, oligonucleotides derived from sequence as set forth in SEQ ID NO:3, SEQ ID NO: 15, or SEQ ID NO: 17 can be used to detennine the presence or absence of a TIC6757PL, TIC7472PL, or TIC7473PL transgene in a deoxyribonucleic acid sample derived from a commodity product. Given the sensitivity of certain nucleic acid détection methods that employ oligonucleotides, it is anticipated that oligonucleotides derived from sequences as set forth in SEQ ID NO:3, SEQ ID NO: 15, and SEQ ID NO:17 can be used to detect a TIC6757PL, TIC7472PL, and TIC7473PL transgene in commodity products derived from pooled sources where only a fraction of the commodity product is derived from a transgenic plant containing any of the transgenes. It is further recognized that such oligonucleotides can be used to introduce nucléotide sequence variation in each of SEQ ID NO:3, SEQ ID NO:I5, and SEQ ID NO:I7. Such “mutagenesis” oligonucleotides are useful for identification of TIC6757PL, TIC7472PL, and TIC7473PL amino acid sequence variants exhibiting a range of insect inhibitory activity or varied expression in transgenic plant host cells.
[0075] Nucléotide sequence homologs, e.g., insecticidal proteins encoded by nucléotide sequences that hybridize to each or any of the sequences disclosed in this application under stringent hybridization conditions, are also an embodiment of the présent invention. The invention also provides a method for detecting a first nucléotide sequence that hybridizes to a second nucléotide sequence, wherein the first nucléotide sequence (or its reverse complément sequence) encodes a pesticidal protein or pesticidal fragment thereof and hybridizes to the second nucléotide sequence. In such case, the second nucléotide sequence can be any of the nucléotide sequences presented as SEQ ID NO:3, SEQ ID NO:1, S1Q ID NO:7, SEQ ID NO:11, SEQ ID NO: 15, or SEQ ID NO: 17 under stringent hybridization conditions. Nucléotide coding sequences hybridize to one another under appropriate hybridization conditions, such as stringent hybridization conditions, and the proteins encoded by these nucléotide sequences cross react with antiserum raised against any one of the other proteins. Stringent hybridization conditions, as defined herein, comprise at least hybridization at 42°C followed by two washes for five minutes each at room température with 2X SSC, 0.1% SDS, followed by two washes for thirty minutes each at 65°C in 0.5X SSC, 0.1% SDS. Washes at even higher températures constitute even more stringent conditions, e.g., hybridization conditions of 68°C, followed by washing at 68°C, in 2xSSC containing 0.1% SDS.
[0076] One skilled in the art will recognize that, due to the redundancy of the genetic code, many other sequences are capable of encoding such related proteins, and those sequences, to the extent that they function to express pesticidal proteins either in Bacillus strains or in plant cells, are embodiments of the présent invention, recognizing of course that many such redundant coding sequences will not hybridize under these conditions to the native Bacillus or Paenibacillus sequences encoding T1C6757, T1C7472, and T1C7473. This application contemplâtes the use of these and other identification methods known to those of ordinary skil! in the art, to identify TIC6757, T1C7472, and T1C7473 protein-encoding sequences and sequences having a substantial percentage identity to T1C6757, T1C7472, and T1C7473 protein-encoding sequences.
[0077] This disclosure also contemplâtes the use of molecular methods known in the art to engineer and clone commercially useful proteins comprising chimeras of proteins from pesticidal proteins; e.g., the chimeras may be assembled from segments of the T1C6757, TIC6757PL, T1C7472, T1C7472PL, TIC7473, or TIC7473PL proteins to dérivé additional useful embodiments including assembly of segments of TIC6757, TIC6757PL, T1C7472, T1C7472PL, TIC7473, or T1C7473PL proteins with segments of diverse proteins different from TIC6757, T1C6757PL, T1C7472, TIC7472PL, TIC7473, or T1C7473PL and related proteins. The T1C6757, TIC6757PL, TIC7472, T1C7472PL, TIC7473, or TIC7473PL proteins may be subjected to alignment to each other and to other Bacillus, Paenibacillus or other pesticidal proteins (whether or not these are closely or distantly related phylogenetically), and segments of each such protein may be identifîed that are useful for substitution between the aligned proteins, resulting in the construction of chimeric proteins. Such chimeric proteins can be subjected to pest bioassay analysis and characterized for the presence or absence of increased bioactivity or expanded taiget pest spectrum compared to the parent proteins from which each such segment in the chimera was derived. The pesticidal activity of the polypeptides may be further engineered for activity to a particular pest or to a broader spectrum of pests by swapping domains or segments with other proteins or by using directed évolution methods known in the art.
[0078] Methods of controlling insects, in particular Lepidoptera infestations of crop plants, with the TIC6757, TIC6757PL, TIC7472, T1C7472PL, T1C7473, or TIC7473PL proteins are also disclosed in this application. Such methods can comprise growing a plant comprising an insect- or Lepidoptera- inhibitory amount of a TIC6757, T1C6757PL, TIC7472, TIC7472PL, TIC7473, or T1C7473PL toxin protein. In certain embodiments, such methods can further comprise any one or more of: (i) applying any composition comprising or encoding a TIC6757, TIC6757PL, TIC7472, TIC7472PL, T1C7473, or TIC7473PL toxin protein to a plant or a seed that gives rise to a plant; and (ii) transforming a plant or a plant cell that gives rise to a plant with a polynucleotide encoding a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL toxin protein. In general, it is contemplated that a TIC6757, TIC6757PL, TIC7472, TIC7472PL, T1C7473, or TIC7473PL toxin protein can be provided in a composition, provided in a microorganism, or provided in a transgenic plant to confier insect inhibitory activity against Lepidopteran insects.
[0079] In certain embodiments, a recombinant nucleic acid molécule of TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL toxin proteins is the insecticidally active ingrédient of an insect inhibitory composition prepared by culturing recombinant Bacillus or any other recombinant bacterial cell transformed to express a TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL toxin protein under conditions suitable to express the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL toxin protein. Such a composition can be prepared by desiccation, lyophilization, homogenization, extraction, filtration, centrifugation, sédimentation, or concentration of a culture of such recombinant cells expressing/producing said recombinant polypeptide. Such a process can resuit in a Bacillus or other entomopathogenic bacterial cell extract, cell suspension, cell homogenate, cell lysate, cell supematant, cell filtrate, or cell pellet. By obtaining the recombinant polypeptides so produced, a composition that includes the recombinant polypeptides can include bacterial cells, bacterial spores, and parasporal inclusion bodies and can be formulated for various uses, including as agricultural insect inhibitory spray products or as insect inhibitory formulations in diet bioassays.
[0080] In one embodiment, to reduce the likelihood of résistance development, an insect inhibitory composition comprising T1C6757, TIC6757PL, TIC7472, T1C7472PL, T1C7473, or TIC7473PL can further comprise at least one additional polypeptide that exhibits insect inhibitory activity against the same Lepidopteran insect species, but which is different from the TIC6757, T1C6757PL, TIC7472, TIC7472PL, T1C7473, or TIC7473PL toxin protein. Possible additional polypeptides for such a composition include an insect inhibitory protein and an insect inhibitory dsRNA molécule. One example for the use of such ribonucleotide sequences to control insect pests is described in Baum, et al. (U.S. Patent Publication 2006/0021087 Al). Such additional polypeptide for the control of Lepidopteran pests may be selected from the group consisting of an insect inhibitory protein, such as, but not limited to, CrylA (U.S. Patent No. 5,880,275), CrylAb, CrylAc, CrylA.105, CrylAe, CrylB (U.S. Patent Publication No. 10/525,318), CrylC (U.S. Patent No. 6,033,874), CrylD, CrylDa and variants thereof, CrylE, CrylF, and CrylA/F chimeras (U.S. Patent Nos. 7,070,982; 6,962,705; and 6,713,063), CrylG, CrylH, Cryll, CrytJ, CrylK, CrylL, Cryt-type chimeras such as, but not limited to, TIC836, TIC860, TIC867, T1C869, and TIC II00 (International Application Publication WO2016/061391 (A2)), TIC2160 (International Application Publication WO2016/061392(A2)), Cry2A, Cry2Ab (U.S. Patent No. 7,064,249), Cry2Ae, Cry4B, Cry6, Cry7, Cry8, Cry9, Cryl5, Cry43A, Cry43B, CrySlAal, ET66, TIC400, T1C800, TIC834, TIC1415, Vip3A, VIP3Ab, VIP3B, AXMI-001, AXMI-002, AXMI-030, AXMI-035, AND AXMI-045 (U.S. Patent Publication 2013-0117884 AI), AXMI-52, AXMI-58, AXMI-88, AXMI-97, AXMI-102, ΑΧΜΙ-Π2, AXMI-117, AXMI-100 (U.S. Patent Publication 2013-0310543 At), AXM1-115, AXMI-113, AXM1-005 (U.S. Patent Publication 2013-0104259 At), AXMI-134 (U.S. Patent Publication 2013-0167264 Al), AXMI-150 (U.S. Patent Publication 2010-0160231 Al), AXMI-184 (U.S. Patent Publication
2010- 0004176 At), AXMI-196, AXMI-204, AXMI-207, AXMt-209 (U.S. Patent Publication
2011- 0030096 Al), AXM1-218, AXMI-220 (U.S. Patent Publication 2014-0245491 Al), AXMI-22Iz, AXMI-222z, AXMI-223z, AXMI-224z, AXMI-225z (U.S. Patent Publication 2014-0196175 Al), AXMI-238 (U.S. Patent Publication 2014-0033363 Al), AXMI-270 (U.S. Patent Publication 2014-0223598 Al), AXMI-345 (U.S. Patent Publication 20140373195 Al), AXMI-335 (International Application Publication WO2013/134523(A2)), DIG-3 (U.S. Patent Publication 2013-0219570 AI), D1G-5 (U.S. Patent Publication 20100317569 Al), D1G-11 (U.S. Patent Publication 2010-0319093 Al), AflP-lA and dérivatives thereof (U.S. Patent Publication 2014-0033361 Al), AfIP-lB and dérivatives thereof (U.S. Patent Publication 2014-0033361 Al), PIP-1APIP-1B (U.S. Patent Publication 20140007292 Al), PSEEN3174 (U.S. Patent Publication 2014-0007292 Al), AECFG-592740 (U.S. Patent Publication 2014-0007292 Al), Pput_1063 (U.S. Patent Publication 20140007292 Al), DIG-657 (International Application Publication WO2015/195594 A2), Pput_1064 (U.S. Patent Publication 2014-0007292 Al), GS-135 and dérivatives thereof (U.S. Patent Publication 2012-0233726 Al), GS153 and dérivatives thereof (U.S. Patent Publication 2012-0192310 Al), GS154 and dérivatives thereof (U.S. Patent Publication
2012-0192310 Al), GS155 and dérivatives thereof (U.S. Patent Publication 2012-0192310 Al), SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 20120167259 Al, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2012-0047606 Al, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2011-0154536 Al, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2011-0112013 Al, SEQ ID NO:2 and 4 and dérivatives thereof as described in U.S. Patent Publication 2010-0192256 Al, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2010-0077507 Al, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2010-0077508 AI, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent Publication 2009-0313721 Al, SEQ ID NO:2 or 4 and dérivatives thereof as described in U.S. Patent Publication 2010-0269221 AI, SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent No. 7,772,465 (B2), CF161_0085 and dérivatives thereof as described in W02014/008054 A2, Lepidopteran toxic proteins and their dérivatives as described in US Patent Publications US2008-0172762 Al, US2011-0055968 AI, and US2012-0117690 Al; SEQ ID NO:2 and dérivatives thereof as described in US7510878(B2), SEQ ID NO:2 and dérivatives thereof as described in U.S. Patent No. 7812129(B 1 ); and the like.
[0081] In other embodiments, such composition/formulation can further comprise at least one additional polypeptide that exhibits insect inhîbitory activity to an insect that is not inhibited by an otherwise insect inhîbitory protein of the présent invention to expand the spectrum of insect inhibition obtained. For example, for the control of Hemipteran pests, combinations of insect inhîbitory proteins of the présent invention can be used with Hemipteran-active proteins such as TIC14I5 (US Patent Publication 2013-0097735 Al), TIC807 (U.S. Patent No. 8609936), TIC834 (U.S. Patent Publication 2013-0269060 Al), AXMI-036 (U.S. Patent Publication 2010-0137216 Al), and AXMI-171 (U.S. Patent Publication 2013-0055469 Al). Further a polypeptide for the control of Coleopteran pests may be selected from the group consisting of an insect inhibitory protein, such as, but not limited to, Cry3Bb (U.S. Patent No. 6,501,009), CrylC variants, Cry3A variants, Cry3, Cry3B, Cry34/35, 5307, AXMI134 (U.S. Patent Publication 2013-0167264 Al) AXMI-184 (U.S. Patent Publication 2010-0004176 Al), AXMI-205 (U.S. Patent Publication 2014-0298538 Al), AXM1-207 (U.S. Patent Publication 2013-0303440 Al), AXMI-218, AXMI-220 (U.S. Patent Publication 20140245491 Al), AXMI-221z, AXMI-223z (U.S. Patent Publication 2014-0196175 Al), AXMI-279 (U.S. Patent Publication 2014-0223599 Al), AXM1-R1 and variants thereof (U.S. Patent Publication 2010-0197592 Al, TIC407, TIC417, TIC431, TIC807, T1C853, TIC901, TIC1201, TIC3131, DIG-I0 (U.S. Patent Publication 2010-0319092 Al), eHlPs(U.S. Patent Application Publication No. 2010/0017914), 1P3 and variants thereof (U.S. Patent Publication 2012-0210462 Al), and πι-Hexatoxin-Hvl a (U.S. Patent Application Publication US20140366227 Al).
[0082] Additional polypeptides for the control of Coleopteran, Lepidopteran, and Hemipteran insect pests can be found on the Bacillus thuringiensis toxin nomenclature website maintained by Neil Crickmore (on the world wide web at btnomenclature.info).
J0083J The possibility for insects to develop résistance to certain insecticides has been documented in the art. One insect résistance management strategy is to employ transgenic crops that express two distinct insect inhibitory agents that operate through different modes of action. Therefore, any insects with résistance to either one of the insect inhibitory agents can be controlled by the other insect inhibitory agent. Another insect résistance management strategy employs the use of plants that are not protected to the targeted Lepidopteran pest species to provide a refuge for such unprotected plants. One particular example is described in U.S. Patent No. 6,551,962, which is incorporated by reference in its entirety.
[0084| Other embodiments such as topically applied pesticidal chemistries that are designed for controlling pests that are also controlled by the proteins disclosed herein to be used with proteins in seed treatments, spray on, drip on, or wipe on formulations can be applied directly to the soi] (a soil drench), applied to growing plants expressing the proteins disclosed herein, or formulated to be applied to seed containing one or more transgenes encoding one or more of the proteins disclosed. Such formulations for use in seed treatments can be applied with various stickers and tackifïers known in the art. Such formulations can contain pesticides that are synergistic in mode of action with the proteins disclosed, so that the formulation pesticides act through a different mode of action to control the same or similar pests that can be controlled by the proteins disclosed, or that such pesticides act to control pests within a broader host range or plant pest species that are not efiectively controlled by the TIC6757, TIC6757PL, TIC7472, TIC7472PL, TIC7473, or TIC7473PL pesticidal proteins.
[0085] The aforementioned composition/formulation can further comprise an agriculturallyacceptable carrier, such as a bait, a powder, dust, pellet, granule, spray, émulsion, a colloïdal suspension, an aqueous solution, a Bacillus spore/crystal préparation, a seed treatment, a recombinant plant cell/plant tissue/seed/plant transformed to express one or more of the proteins, or bacterium transformed to express one or more of the proteins. Depending on the level of insect inhibitory or insecticidal inhibition inhérent in the recombinant polypeptide and the level of formulation to be applied to a plant or diet assay, the composition/formulation can include various by weight amounts of the recombinant polypeptide, e.g. from 0.0001% to 0.001% to 0.01% to 1% to 99% by weight of the recombinant polypeptide.
[0086] In view of the foregoing, those of skill in the art should appreciate that changes can be made in the spécifie aspects which are disclosed and still obtain a like or similar resuit without departing from the spirit and scope of the invention. Thus, spécifie structural and functional details disclosed herein are not to be interpreted as limiting. It should be understood that the entire disclosure of each reference cited herein is incorporated within the disclosure of this application.
EXAMPLES
Example 1
Dis co very', clonlng, and expression of TIC6757 [0087] Sequences encoding three novel Paenibacillus popîlliae pesticidal proteins were identified, cloned, sequence confirmed, and tested in insect bioassay. The pesticidal proteins, TIC6757, TIC7472, and TIC7473, isolated from the Paenibacillus popîlliae strains DSC004343, DSC007648, and DSC008493, respectîvely, represent novel Vip3C-like proteins. Distant-related sequences to TIC6757, TIC7472, and TIC7473 are Vip3Ca2 (at 83.7% identity, the closest known relative), Vip3AaI (66.75% identity), and a Vip3B-like protein (60.93% identity). The distinctive and unique quality of TIC6757, TIC7472, and TIC7473 ïndicates that these pesticidal proteins likely hâve a novel mode of action (MOA).
[0088] Polymerase chain reaction (PCR) primers were designed to amplify a full length copy of the coding région for TIC6757, TIC7472, and TIC7473 from total genomic DNA isolated from the Paenibacillus popilliae strains DSC004343, DSC007648, and DSC008493, respectively. The PCR amplicons also included the translational initiation and termination codons of each coding sequence.
[0089] Each of the amplicons were cloned using methods known in the art into two different Bt expression vectors in opérable linkage with a Bt expressible promoter. One Bt expression vector comprised a promoter that is on during sporulation of the bacillus. The other expression vector comprised a non-sporulation promoter. In addition, each of the amplicons were cloned into a vector used for protein expression in Escherichia coli (E. colt). For isolation of the E. coli expressed proteins, a Histidine tag was operably linked to the expressed coding sequences to facilitate column purification of the protein. The coding sequences and their respective protein sequences used for bacterial expression are presented in Table 3 below.
Table 3. Toxin coding sequences and corresponding protein sequences used for expression in Bt and E. coli.
Toxin | DNA Coding Sequence SEQ ID NO: | Protein SEQ ID NO: | Bacterial Expression Host |
T1C6757 | 1 | 2 | Bt |
T1C7472 | 7 | 8 | Bt |
TIC7473 | 11 | 12 | Bt |
TIC6757 His | 5 | 6 | E. coli |
TIC7472 His | 9 | 10 | E. coli |
TÎC7473 His | 13 | 14 | E. col i |
Exampie 2
TIC6757,TIC7472, and TIC7473 dcmonstrates Lepidopteran activity in insect bioassay [0090] The pesticidal proteins TIC6757, TIC7472, and TIC7473 were expressed in Bt and E. coli and assayed for toxicity to various species of Lepidoptera, Coleoptera, and Hemiptera. Préparations of each toxin from Bt were assayed against the Lepidopteran species Beet armyworm (BAW, Spodoptera exigua), Black cutworm (BCW, Agrotis ipsilori), Com earworm (CEW, Helicoverpa zea), Cotton leaf worm (CLW, Alabama argillacea),
Diamondback moth (DBM, Plutella xylostella), European com borer (ECB, Ostrinia nubilalis), Fall armyworm (FAW, Spodoptera frugiperda), CrylFal résistant Fall armyworm (FAWR1, Spodoptera frugiperda), American bollworm (AWB, Helicoverpa armigera), Pink bollworm (PBW, Pectinophora gossypiella), Southem armyworm (SAW, Spodoptera eridania), Soybean looper (SBL, Chrysodeixis includens), Spotted bollworm (SBW, Earias vittella), Southwestem com borer (SWCB, Diatraea grandiosella), Tobacco budworm (TBW, Heliothis virescens), Tobacco cutworm (TCW, Spodoptera litura, also known as cluster caterpillar), and Velvet bean caterpiUar (VBW, Anticarsia gemmatalis); the coleopteran species Colorado potato beetle (CPB, Leptinotarsa decemlineata), Western Com Rootworm (WCB, Diabrotica virgifera virgifera); and the hemipteran species Tamished plant bug (TPB, Lygus lineolaris), Western tamished plant bug (WTP, Lygus hesperus), Neotropical Brown Stink Bug (NBSB, Euschistus héros), and Green Stink Bug (GSB, Nezara viridula).
[0091] Bioactivity of the pesticidal proteins T1C6757, TIC7472, and TIC7473 was evaluated by producing the protein in either an £ coli or Bt expression host. In the case of the Bt host, a Bt strain expressing TIC6757, TIC7472, or TIC7473 was grown for twenty four (24) hours and then the culture was added to insect diet. Mortality and stunting were evaluated by comparing the growth and development of insects on a diet with a culture from the Bt strain expressing TIC6757, TIC7472, or TIC7473 to insects on a diet with an untreated control culture. The E, coli strains expressing TIC6757, TIC7472, or TIC7473 were treated in a similar manner and were also provided in an insect diet. The bioassay activity observed for each protein from either the Bt or E. coli préparation or both préparations is presented in Tables 4 and 5 below, wherein “+” indicates activity and “NT” îndicates the toxin was not assayed against that spécifie insect pest.
Table 4. Bioassay activity of TIC6757, TIC7472, and TIC7473 against insect pests.
Toxin | BAW | BCW | CEW | CLW | DBM | ECB | FAW | FAWR1 | AWB | PBW | SAW | SBL |
TIC6757 | + | + | + | + | + | + | + | + | + | + | + | |
TIC7472 | NT | NT | + | NT | NT | NT | + | NT | NT | NT | + | + |
TIC7473 | NT | NT | + | NT | NT | NT | + | NT | NT | NT | + | + |
Table 5. Bioassay activity of TIC6757, TIC7472, and TIC7473 against Insect pests.
Toxin | SBW | SWCB | TBW | TCW | VBC | CPB | WCR | TPB | WTP | NBSB | SGB |
TIC6757 | + | + | + | + | + | ||||||
TIC7472 | NT | + | NT | NT | NT | NT | NT | ||||
TIC7473 | NT | + | NT | NT | NT | NT | NT |
[0092] As can be seen in Tables 4 and 5 above, the insect toxin TIC6757 demonstrated activity against many Lepidopteran insect pests (BAW, BCW, CEW, CLW, DBM, ECB, FAW, FAWR1, AWB, SAW, SBL, SBW, SWCB, TBW, TCW, and VBC). Activity was observed for most of the pests assayed against TIC7472 and TIC7473 (CEW, FAW, SAW, SBL, SWCB).
Example 3
Assay of TIC6757PL activity against Lepidopteran pests in stably transformcd corn plants [0093] Binary plant transformation vectors comprising transgene cassettes designed to express both plastid targeted and untargeted TIC6757PL pesticidal protein were cloned using methods known in the art. The resulting vectors were used to stably transform com plants. Tissues were harvested from the transformants and used in insect bioassay against various Lepidopteran insect pests.
[0094] Synthetîc coding sequences were constructed for use in expression of the encoded protein in plants, cloned into a binary plant transformation vector, and used to transform com plant cells. The synthetîc sequences were synthesized, according to methods generally described in U.S. Patent 5,500,365, to avoid certain inimical problem sequences such as ATTTA and ATT rich plant polyadenylation sequences while preserving the amino acid sequence of the native Paenibacillus protein. The synthetîc coding sequences encoded a TIC6757PL protein which comprises an additional alanine residue immediately following the initiating méthionine relative to TIC6757 protein. For plastid targeted protein, the synthetîc TIC6757PL pesticidal protein coding sequence was operably linked in frame with a chloroplast targeting signal peptide coding sequence. The resulting plant transformation vectors comprised a first transgene cassette for expression of the TIC6757PL pesticidal protein which comprised a constitutive promoter, operably linked 5' to a leader, operably linked 5' to an intron, operably linked 5' to a synthetîc coding sequence encoding a plastid targeted or untargeted TIC6757PL protein, which was in tum operably linked 5' to a 3' UTR; and a second transgene cassette for the sélection of transformed plant cells using glyphosate sélection. The synthetîc coding sequence for the T1C6757PL pesticidal protein is presented as SEQ ID NO:3 and encodes the protein presented as SEQ ID NO:4.
[0095] Corn plants were transformed with four different binary transformation vectors as described above using an /fgroôacteni/ni-mediated transformation method. Binary plant transformation vector Constructs ! and 3 comprised a coding sequence encoding a plastid targeted TIC6757PL protein, while Constructs 2 and 4 comprised a coding sequence encoding a non-targeted TIC6757PL protein. The transformed cells were induced to form plants by methods known in the art. Bioassays using plant leaf disks were performed analogous to those described in U.S. Patent No. 8,344,207. A single freshly hatched neonate larvae less than one day old was placed on each leaf dise sample and allowed to feed for approximately four days. A non-trans formed corn plant was used to obtain tissue to be used as a négative control. Multiple transformation Ro single-copy insertion events from each binary vector were assessed against Black cutworm (BCW, Agrotis ipsilon), Corn earworm (CEW, Helicoverpa zea), Fall armyworm (FAW, Spodoptera frugiperda), and Southwestem Corn Borer (SWCB, Diatraea grandiosclla).
[0096] Transformed Ro plants expressing TIC6757PL were highly efficacious (defined as having less than or equal to seventeen point five percent leaf damage with one hundred percent mortality) against ail four insect pests assayed as shown in Table 6. High penetrance (indicated by “(H)”) is defined as greater than fifty percent of the assayed events for each construct having less than or equal to seventeen point five percent leaf damage with one hundred percent mortality. Low penetrance (indicated by “(L)”) is defined as less than or equal to fifty percent of the assayed events for each construct having less than or equal to seventeen point five percent leaf damage with one hundred percent mortality.
Table 6. Number of Events Expressing TIC6757 with < 17.5% Leaf Damage with One Hundred Percent Mortality and Penetrance.
Number of Events with < 17.5% Leaf Damage and 100% mortality (penetrance) | |||||
Construct | Total Number of Events | BCW | CEW | FAW | swe |
Construct 1 | 22 | 17 (H) | J81H) | 18 (H) | IJ (L) |
Construct 2 | 20 | 14 (H) | 14 (H) | 14 (H) | 4(L) |
Construct 3 | 19 | 17 (H) | 17 (H) | 17 (H) | 17 (H) |
Construct 4 | 20 | .16 (H) | 16 (H) | 15 (H) | 7(L) |
[0097J Selected Ro events derived from Ro Construct 1 (plastid targeted) and Construct 2 plastid untargeted) were allowed to self-pollinate, producing Fi progeny. Several heterozygous Fj progeny plants from each Ro event were selected for leaf dise bioassay and assayed against Black cutworm (BCW, Agrotis ipsilon), Com earworm (CEW, Helicoverpa 5 zca), Fall armyworm (FAW, Spodoptera frugiperda), and Southwestem Com Borer (SWCB,
Diatraca grandiosella). Table 7 below shows the mean percent leaf damage and mean mortality for each plant derived from each construct/event. The F| progeny plants are referenced with respect to the Ro event. For example “Event-1_1” is the first heterozygous F| progeny plant derived from Event-1 and “Event-1_2” is the first heterozygous F| progeny 10 plant derived from Event-1. “N” represents the number of samples from each plant used in assay. As can be seen in Tables 7 and 8, most plants derived from each Ro event demonstrated no more than five percent leaf damage and one hundred percent mortality against BCW, CEW, and FAW. With respect to SWCB, multiple plants derived from each Ro event demonstrated less than ten percent leaf damage and greater than fifty percent 15 mortality in assay.
Table 7. Mean Percent Leaf Damage and Mortality in F] Progeny Derived from Selected Ro events Expressing TIC6757PL.
BCW | CEW | |||||
Construct | Event Plant | N | Mean % Leaf Damage | Mean Mortality | Mean ·/. Leaf Damage | Mean Mortality |
Construct 1 | Evenl-I 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 1 | Event-1 2 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 1 | Event-1 3 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 1 | Event-1 4 | 3 | 5.00 | 100.00 | 6.65 | 100.00 |
Construct 1 | Event-2 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 1 | Event-2 2 | 3 | NT | NT | 7.50 | 100.00 |
Construct I | Event-2 3 | 3 | NT | NT | 8.35 | 100.00 |
Construct 2 | Event-3 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-3 2 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-4 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-4 2 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-4 3 | 3 | 6.65 | 66.67 | 5.00 | 100.00 |
Construct 2 | Event-4 4 | 3 | 6.65 | 66.67 | 5.00 | 100.00 |
Construct 2 | Event-4 5 | 3 | 20.00 | 33.33 | 10.00 | 100.00 |
Construct 2 | Event-5 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-5 2 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-5 3 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
ΝΟΝΕ | Négative Control | 3 | 55.00 | 0.00 | 55.00 | 0.00 |
Table 8. Mean Percent Leaf Damage and Mortality In Fj Progeny Derived from Selected Ro events Expressing TIC6757PL.
FAW | SWCB | |||||
Construct | Event Plant | N | Mean % Leaf Damage | Mean Mortality | Mean ·/. Leaf Damage | Mean Mortality |
Construct 1 | Event-1 1 | 3 | 5.00 | 100.00 | 6.65 | 66.67 |
Construct 1 | Event-1 2 | 3 | 5.00 | 100.00 | 6.65 | 66.67 |
Construct 1 | Evenl-1 3 | 3 | 5.00 | 100.00 | 7.50 | 50.00 |
Construct 1 | Event-1 4 | 3 | 5.00 | 100.00 | 8.35 | 66.67 |
Construct 1 | Event-2 1 | 3 | 5.00 | 100.00 | 5.00 | 50.00 |
Construct 1 | Evenl-2 2 | 3 | 5.00 | 100.00 | 5.00 | 50.00 |
Construct 1 | Event-2 3 | 3 | 5.00 | 100.00 | 6.65 | 66.67 |
Construct 2 | Event-3 1 | 3 | 5.00 | 100.00 | 5-00 | 100.00 |
Construct 2 | Event-3 2 | 3 | 5.00 | 100.00 | 15.00 | 50.00 |
Construct 2 | Event-4 1 | 3 | 5.00 | 100.00 | 12.50 | 0 00 |
Construct 2 | Event-4 2 | 3 | 5.00 | 100.00 | 40.00 | 100.00 |
Construct 2 | Event-4 3 | 3 | 5.00 | 100.00 | 48.35 | 0.00 |
Construct 2 | Event-4 4 | 3 | 5.00 | 100.00 | 55.00 | 0.00 |
Construct 2 | Event-4 5 | 3 | 5.00 | i 00.00 | 55.00 | 0.00 |
Construct 2 | Event-5 1 | 3 | 5.00 | 100.00 | 5.00 | 100.00 |
Construct 2 | Event-5 2 | 3 | 5.00 | 100.00 | 6.65 | 66.67 |
Construct 2 | Event-5 3 | 3 | 5.00 | 100.00 | 8.35 | 0.00 |
ΝΟΝΕ | Négative Control | 3 | 55.00 | 0.00 | 51.65 | 0.00 |
J0098J Selected Ro events derived from Construct 3 (pîastid targeted) and Construct 4 (untargeted) were allowed to self-polltnate producing Fj progeny. A heterozygous Ft progeny plant from each Ro event was selected for leaf dise bioassay and assayed against Western bean cutworm (WBC, Striacosta albicosta). Table 9 shows the mean percent leaf damage and mean percent mortality of the Fi progeny plant from each Ro event and the 10 négative control. “N” represents the number of samples from each plant used in assay.
Table 9. Mean Percent Leaf Damage and Mean Percent Mortality In Fi Progeny Derived from Selected Ro events Expressing TIC6757PL.
Construct | Event | N | Mean % Leaf Damage | Mean Mortality |
Construct 3 | Event-6 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-7 l | 4 | 5.00 | 100.00 |
Construct 3 | Event-8 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-9 l | 4 | 5.00 | 100.00 |
Construct 3 | Event-10 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-11 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-12 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-13 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-14 1 | 4 | 5.00 | 100.00 |
Construct 3 | Event-15 1 | 4 | 27.50 | 50.00 |
Construct 4 | Event-16 1 | 4 | 5.00 | 100.00 |
Construct 4 | Event-17 1 | 4 | 5.00 | 100.00 |
Construct 4 | Event-18 1 | 4 | 5.00 | 100.00 |
Négative Control | 4 | 45.00 | 0.00 |
[0099] As can be seen in Table 9 above, ail but one Fj progeny plant from each Ro event assayed against WBC demonstrated no more than five percent leaf damage and one hundred percent mortality.
[00100] Seedlings derived from selected heterozygous Fj progeny plants transformed with Construct 3 (plastid targeted) and Construct 4 (untargeted) were assayed for résistance against Black cutworm (BCW, Agrotis ipsilon). F] progeny seeds, as well as nontransformed seed (négative control), were planted in pots. After eight days when the seedlings were emerging from the soil, each plant was infested with three, third instar BCW. Fourteen days after infestation the plants were inspected to count the number of plants that were eut down by BCW. Sixty eight Fj progeny plants derived from ten different Ro events transformed with Construct 3 and ten Fj progeny plants derived from four different Ro events transformed with Construct 4 were used in the assay. Fifteen négative control plants were also used in the assay. After inspection of the plants, it was observed that eighty percent of the négative controts were eut down by BCW while zéro percent of the Fj progeny plants transformed with either Construct 3 and Construct 4 demonstrated cutting.
[00101] The forgoing demonstrates that transformed com plants expressing TIC6757PL provide superior résistance to Lepidopteran insect pests, in particular Black cutworm (Agrotis ipsilon), Com earworm (Helicoverpa zea), Fall armyworm (Spodoptera frugiperda), Southwestem Com Borer (Diatraea grandiosella), and Western bean cutworm (Striacosta albicosta).
Example 4
Assay of TIC6757PL activity against Lepidopteran pests in stably transformed soybean plants [00102] Binary plant transformation vectors comprising transgene cassettes designed to express both plastid targeted and untargeted TIC6757PL pesticidal protein were cloned using methods known in the art. The resulting vectors were used to stably transform soybean plants. Tissues were harvested from the transformants and used in insect bioassay against various Lepidopteran insect pests.
[00103] The synthetic coding sequence designed for plant expression as described in Example 3 above was cloned into binary plant transformation vectors, and used to transform soybean plant cells. Binary vectors comprising plastid targeted and untargeted TIC6757PL coding sequences were constructed using methods known in the art. The resulting plant transformation vectors comprised a first transgene cassette for expression of the TIC6757PL pesticidal protein which comprised a constitutive promoter, operably linked 5' to a leader, operably linked 5' to a synthetic coding sequence encoding a plastid targeted or untargeted TIC6757PL protein, which was in tum operably iinked 5' to a 3' UTR and; a second transgene cassette for the sélection of transformed plant cells using spectinomycin sélection. Constructs I, 3 and 5 comprised a coding sequence encoding an untargeted TIC6757PL pesticidal protein. Constructs 2, 4 and 6 comprised a coding sequence encoding a plastid targeted TIC6757PL protein.
[00104] The transformed soybean cells were induced to form plants by methods known in the art. Bioassays using plant leaf disks were performed analogous to those described in U.S. Patent No. 8,344,207. A non-transformed soybean plant was used to obtain tissue to be used as a négative control. Multiple transformation events from each binary vector were assessed against Southem armyworm (SAW, Spodoptera eridania), Soybean looper (SBL, Chrysodeixis includens), and Soybean podworm (SPW, Helicoverpa zea).
[00105] Transformed Ro soybean plants expressing TIC6757PL were highly efficacious (defined as having less than or equal to twenty percent leaf damage) against SAW, SBL, and SPW as shown in Table 10. High penetrance (indicated by “(H)”) is defined as greater than fifty percent ofthe assayed events for each construct having less than or equal to twenty percent leaf damage. Low penetrance (indicated by “(L)”) is defined as less than or equal to fifty percent of the assayed events for each construct having less than or equal to twenty percent leaf damage.
Table 10. Number of Events Expressing TIC6757PL with < 20% Leaf Damage and Penetrance.
Number of Events with < 20% Leaf Damage (Penetrance) | ||||
Construct | Total Number of Events | SAW | SBL | SPW |
Construct 1 | 15 | i4(H) | 14 (H) | 12 (H) |
Construct 2 | 15 | 5(L) | 3 (L) | 8 (H) |
Construct 3 | 15 | 12 (H) | 13 (H) | 13 (H) |
Construct 4 | 15 | 15 (H) | 15 (H) | 15 (H) |
Construct 5 | 15 | 14 (H) | 13 (H) | 14 (H) |
Construct 6 | 15 | 15 (H) | 15 (H) | 15 (H) |
[00106] Selected Ro transgenic soybean plants expressing TIC6757PL protein toxin derived from transformation of Constructs 3, 4, 5, and 6 were allowed to self-pollinate and produce R; seed. The Ri seed was allowed to germinate producing Rj plants. Rf plants homozygous for the TIC6757PL expression cassette were selected for leaf dise bioassay against Southem armyworm (SAW, Spodoptera eridania), Soybean looper (SBL, Chrysodeixis includens), Soybean podworm (SPW, Helicoverpa zed), and Velvet bean caterpillar (VBW, Anticarsia gcmmatalis). Tables il and 12 show the mean percent leaf damage demonstrated by each insect for each R) progeny plant and the négative control, variety A3555. Tables II and 12 also show the standard error mean (SEM) percent leaf damage demonstrated by each insect for each event assayed relative to the négative control. “N” represents the number of samples from each plant used in assay. “SEM” represents the standard error of the mean percent damage.
Table 11. Mean Percent Leaf Damage for R[ Soybean Plants Expressing TIC6757PL.
SAW | SBL | |||||||
Construct | Number of Events | Number of Plants/Event | N | Mean % Damage | SEM | N | Mean % Damage | SEM |
Construct 3 | 5 | 6 | 4 | 0.37 | 0.30 | 4 | 1.91 | 0.72 |
Construct 4 | 8 | 6 | 4 | 0.31 | 0.25 | 4 | 1.25 | 0.34 |
Construct 5 | 8 | 6 | 4 | 0.02 | 0.02 | 4 | 0.75 | 0.35 |
Construct 6 | 8 | 6 | 4 | 0.76 | 0.34 | 4 | 0.97 | 0.35 |
Négative Control | Variety A3555 | 8 | 4 | 87.93 | 9.74 | 4 | 79.44 | 12.44 |
Table 12. Mean Percent Leaf Damage for Ri Soybean Plants Expressing TIC6757PL.
SPW | VBC | |||||||
Construct | Number of Events | Number of Plants/Event | N | Mean % Damage | SEM | N | Mean % Damage | SEM |
Construct 3 | 5 | 6 | 4 | 16.32 | 3.83 | 4 | 1.89 | 0.60 |
Construct 4 | 8 | 6 | 4 | 2.25 | 0.30 | 4 | 0.96 | 0.31 |
Construct 5 | 8 | 6 | 4 | 2.40 | 0.50 | 4 | 0.51 | 0.25 |
Construct 6 | 8 | 6 | 4 | 3.65 | 0.53 | 4 | 0.71 | 0.32 |
Négative Control | Variety A3555 | 8 | 4 | 97.25 | 1.09 | 4 | 88.88 | 10.30 |
[00107] As can be seen in Tables 1 i and 12, R| soybean plants expressing TIC6757PL toxin protein provide superior résistance to SAW, SBL, SPW, and VBC. With respect to SAW, ail four events demonstrated less than one (1) percent leaf damage while the négative control had approxîmately eighty-eight (88) percent leaf damage. With respect to SBL, ail four (4) events demonstrated less than two (2) percent leaf damage while the control had approxîmately eighty (80) percent leaf damage. With respect to SPW, three of the four events demonstrated less than four (4) percent leaf damage while the control had approxîmately ninety-seven (97) percent leaf damage. With respect to VBC, three of the events demonstrated less than one (I) percent leaf damage and one event demonstrated less than two (2) percent leaf damage, while the négative control had close to eighty-nine (89) percent leaf damage.
[00108] The forgoing demonstrates that transformed soybean plants expressing TIC6757PL provide superior résistance to Lepidopteran insects, in particular Southem armyworm (Spodoptera eridania), Soybean looper (Chrysodeixis includens), Soybean podworm (Helicoverpa zea), and Velvet bean caterpillar (Anticarsia gemmatalis).
Example 5
Assay of TIC6757PL activity against Lepldopteran pests ln stably transformed cotton plants [00109] Binary plant transformation vectors comprising transgene cassettes designed to express both plastid targeted and untargeted TIC6757PL pesticidal protein were cloned using methods known in the art. The resulting vectors were used to stably transform cotton plants. Tissues were harvested from the transformants and used in insect bioassay against various Lepidopteran insect pests.
[00110] The synthetic coding sequence designed for plant expression as described in Example 3 above was cloned into binary plant transformation vectors, and used to transform cotton plant cells. Binary vectors comprising plastid targeted and untargeted TIC6757PL coding sequences were constructed using methods known in the art. The resulting plant transformation vectors comprised a first transgene cassette for expression of the TIC6757PL pesticidal protein which comprised a constitutive promoter, operably linked 5' to a leader, operably linked 5' to a synthetic coding sequence encoding a plastid targeted or untargeted TIC6757PL protein, which was in tum operably linked 5' to a 3' UTR and; a second transgene cassette for the sélection of transformed plant cells using spectinomycin sélection.
[00111] The transformed cotton cells were induced to form plants by methods known in the art. Bioassays using plant leaf disks were performed analogous to those described in U.S. Patent No. 8,344,207. A non-transformed cotton plant was used to obtain tissue to be used as a négative control. Multiple transformation events from each binary vector were assessed against Southem armyworm Cotton bollworm (CBW, Helicoverpa zea), Fall armyworm (FAW, Spodoptera frugiperda), Soybean looper (SBL, Chrysodeixis includens), and Tobacco budworm (TBW, Heliothis vircscens).
[00112] Transformed Ro cotton plants expressing TIC6757PL were highly efïïcacious (defined as having less than or equal to ten percent leaf damage) against CBW, FAW, SBL and TBW as shown in Table 13. High penetrance (as indicated by “(H)”) is defined as greater than fifty percent of the assayed events for each construct having less than or equal to ten percent leaf damage. Low penetrance (as indicated by “(L)”) is defined as less than or equal to fifty percent of the assayed events for each construct having less than or equal to ten percent leaf damage.
Table 13. Number of Events Expressing TIC6757PL with < 10% Leaf Damage and Penetrance.
Number of Events with < 10% Leaf Damage/Number events assayed (Penetrance) | ||||
Construct | CBW | FAW | SBL | TBW |
Construct 1 | 22/25 (H) | 21/24 (H) | 21/25 (H) | 21/25 (H) |
Construct 2 | 12/15 (H) | 6/15 (L) | 13/15 (H) | 13/15 (H) |
Construct 3 | 7/13 (H) | 8/14 (H) | 4/13 (L) | 6/14 (L) |
Construct 4 | 11/14 (H) | 8/14 (H) | 9/14 (H) | 10/14 (H) |
Construct 5 | 20/25 (H) | 19/23 (H) | 20/24 (H) | 19/23 (H) |
Construct 6 | 6/7 (H) | 7/7 (H) | 7/7 (H) | 6/7 (H) |
Construct 7 | 22/25 (H) | 22/25 (H) | 22/25 (H) | 22/25 (H) |
Example 6
Assay of TIC7472PL and TIC7473PL activity against Lepldopteran pests in stably transformed corn plants [00113] Bînary plant transformation vectors comprising transgene cassettes designed to express both plastid targeted and untargeted T1C7472PL or T1C7473PL pesticidal protein are cloned using methods known in the art. The resulting vectors are used to stably transform corn plants. Tissues are harvested from the transformants and used in insect bioassay against various Lepidopteran insect pests.
[00114] Synthetic coding sequences are constructed for use in expression of the encoded protein in plants, cloned into a binary plant transformation vector, and used to transform corn plant cells. The synthetic sequences are synthesized according to methods generally described in U.S. Patent 5,500,365, avoiding certain inimical problem sequences such as ATTTA and A/T rich plant polyadenylation sequences while preserving the amino acid sequence of the native Paenibacillus protein. The synthetic coding sequences encode a T1C7472PL and T1C7473PL protein, which comprise an additional alanine residue immediately following the inîtiating méthionine relative to the T1C7472 and T1C7473 protein. For plastid targeted protein, the synthetic T1C7472PL or T1C7473PL pesticidal protein coding sequence is operably linked in frame with a chloroplast targeting signal peptide coding sequence. The resulting plant transformation vectors comprise a first transgene cassette for expression of the T1C7472PL or T1C7473PL pesticidal protein which comprise a constitutive promoter, operably linked 5' to a leader, operably linked 5' to an intron, operably linked 5' to a synthetic coding sequence encoding a plastid targeted or untargeted TIC7472PL or TIC7473PL protein, which is in tum operably linked 5' to a 3' UTR; and a second transgene cassette for the sélection of transformed plant cells using glyphosate sélection. The synthetic coding sequence for the TIC7472PL pesticidal protein is presented as SEQ ID NO: 15 and encodes the protein presented as SEQ ID NO: 16. The synthetic coding sequence for the TIC7473PL pesticidal protein is presented as SEQ ID NO: 17 and encodes the protein presented as SEQ ID NO: 18.
[00115] Com plants are transformed with the binary transformation vectors described above using an Jgroàactenum-mediated transformation method. The transformed cells are înduced to form plants by methods known in the art. Bioassays using plant leaf disks are performed analogous to those described in U.S. Patent No. 8,344,207. A non-transformed com plant is used to obtain tissue to be used as a négative control. Multiple transformation events from each binary vector were assessed against Black cutworm (BCW, Agrotis ipsilori), Com earworm (CEW, Heltcoverpa zea), Fall armyworm (FAW, Spoâoptera frugiperda), and Southwestem Com Borer (SWCB, Diatraea grandiosella), as well as other Lepidoteran insect pests.
[00116] The insect pests are observed for mortality and stuntîng caused by ingestion of the presented leaf dises expressing TIC7472PL or T1C7473PL and compared to leaf dises derived from non-transformed com plants.
Example 7
Assay of TIC6757PL activity against Lepidopteran pests in stably transformed soybean and cotton plants [00117] Binary plant transformation vectors comprising transgene cassettes designed to express both plastid targeted and untargeted TIC7472PL or TIC7473PL pesticidal protein are cloned using methods known in the art. The resulting vectors are used to stably transform soybean and cotton plants. Tissues are harvested from the transformants and used in insect bioassay against various Lepidopteran insect pests.
[00118] The synthetic coding sequences designed for plant expression as described in
Example 6 above are cloned into binary plant transformation vectors, and used to transform soybean or cotton plant cells. Binary vectors comprising plastid targeted and untargeted TIC7472PL or TIC7473PL coding sequences are constructed using methods known in the art. The resulting plant transformation vectors comprise a first transgene cassette for expression of the T1C7472PL or TIC7473PL pesticidal protein which comprise a constitutive promoter, operably linked 5' to a leader, operably linked 5' to a synthetic coding sequence encoding a plastid targeted or untargeted TIC7472PL or T1C7473PL protein, which is in tum operably linked 5' to a 3' UTR and; a second transgene cassette for the sélection of transformed plant cells using spectinomycin sélection. Constructs 1, 2 and 7 comprised a cloning sequence encoding an untargeted TIC6757PL pesticidal protein. Constructs 3, 4, 5 and 6 comprised a coding sequence encoding a targeted TIC6757PL pesticidal protein.
[00119J The transformed soybean or cotton cells are induced to form plants by methods known in the art. Bioassays using plant leaf disks are performed analogous to those described in U.S. Patent No. 8,344,207. A non-transformed soybean or cotton plant is used to obtain tissue to be used as a négative control. Multiple transformation events from each binary vector are assessed against Southem armyworm (SAW, Spodoptera cridania), Soybean looper (SBL, Chrysodeixis includens), Soybean podworm (SPW, Helicoverpa zea) Fait armyworm (FAW, Spodoptera frugipcrda), Soybean looper (SBL, Chrysodeixis includens), Tobacco budworm (Heliothis virescens), Cotton bollworm (CBW, Helicoverpa zea), and Velvet bean caterpillar (VBW, Anticarsia gemmatalis) as well as other Lepidoteran insect pests. The insect pests are observed for mortality and stunting caused by ingestion of the presented leaf dises expressing TIC7472PL or T1C7473PL and compared to leaf dises derived from non-transformed soybean or cotton plants.
[00120] Ail of the compositions disclosed and claimed herein can be made and executed without undue expérimentation in light of the présent disclosure. While the compositions of this invention hâve been described in terms of the foregoing illustrative embodiments, it will be apparent to those of skill in the art that variations, changes, modifications, and alterations may be applied to the composition described herein, without departing from the true concept, spirit, and scope of the invention. More specifically, it will be apparent that certain agents that are both chemically and physiologically related may be substituted for the agents described herein while the same or similar results would be achieved. Ail such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the invention as defined by the appended daims.
[00121] Ail publications and published patent documents cited in the spécification are incorporated herein by référencé to the same extent as if each individual publication or patent application was specifically and indivîdually indicated to be incorporated by reference.
Claims (5)
1. A recombinant nucleic acid moîecule comprising a heterologous promoter operably linked to a polynucleotide segment encoding a pesticidal protein or pesticidal fragment thereof, wherein:
a. said pesticidal protein comprises the amino acid sequence of SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO:IO, SEQ ID NO:I2, SEQ ID NO: 14, SEQ iD NO: 16, or SEQ ID NO: 18; or
b. said pesticidal protein comprises an amino acid sequence having at least 85% amino acid sequence identity to SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO:IO, SEQ ID NO:12, SEQ ID NO:I4, SEQ ID NO: 16, or SEQ ID NO: 18.
2. The recombinant nucleic acid moîecule ofclaim 1, wherein:
a. said recombinant nucleic acid moîecule comprises a sequence that fonctions to express the pesticidal protein in a plant; or
b. said recombinant nucleic acid moîecule is expressed in a plant cell to produce a pesticidally effective amount of the pesticidal protein or pesticidal fragment; or
c. said recombinant nucleic acid moîecule is in opérable linkage with a vector, and said vector is selected from the group consisting of a plasmid, phagemid, bacmid, cosmid, and a bacterial or yeast artificial chromosome.
3. The recombinant nucleic acid moîecule of claim 1, defined as présent within a host cell, wherein said host cell is selected from the group consisting of a bacterial cell and a plant cell.
4. The recombinant nucleic acid moîecule of claim 3, wherein said bacterial host cell is from a genus of bacteria selected from the group consisting of: Agrobacterium, Rhizobium, Bacillus, Brevibacillus, Escherichia, Pseudomonas, Klebsiella, Pantoea, and Erwinia.
5. The recombinant nucleic acid moîecule of claim 1, wherein said protein exhibits activity against a Lepidopteran insect.
6. The recombinant nucleic acid moîecule of claim 5, wherein said Lepidopteran insect is selected from the group consisting of: Velvet bean caterpiîlar, Sugarcane borer , Lesser comstalk borer, Com earworm, Tobacco budworm, Soybean looper, Black armyworm, Southem armyworm, Fall armyworm, Beet armyworm, American bollworm, Oriental leaf worm, Pink bollworm, Black cutworm, Southwestem Com Borer, Cotton leaf worm, Diamond back moth, Spotted bowl worm, Tobacco eut worm, Western bean cutworm and European com borer.
7. A plant, or part thereof, comprising the recombinant nucleic acid molécule of claim 1.
8. The plant of claim 7, wherein the plant is selected from the group consisting of an alfalfa, banana, barley, bean, broccoli, cabbage, brassica, carrot, cassava, castor, cauliflower, celery, chickpea, Chinese cabbage, coconut, coffee, com, clover, cotton, cucumber, Douglas fir, eggplant, eucalyptus, flax, garlic, grape, hops, leek, lettuce, Loblolly pine, millets, melons, oat, olive, onion, palm, pasture grass, pea, peanut, pepper, pigeon pea, potato, poplar, pumpkin, Radiata pine, radish, rapeseed, rice, rye, saftlower, sorghum, Southem pine, soybean, spinach, squash, strawberry, sugar beet, sugarcane, sunflower, sweet com, sweet gum, sweet potato, switchgrass, tea, tobacco, tomato, triticale, turf grass, watermelon, and wheat.
9. A seed of the plant of claim 7, wherein said seed comprises said recombinant nucleic acid molécule.
10. An insect inhibitory composition comprising the recombinant nucleic acid molécule of claim 1 and a pesticidal protein or pesticidal fragment of claim 1.
11. The insect inhibitory composition of claim 10, further comprising a nucléotide sequence encoding at least one other pesticidal agent that is different from said pesticidal protein.
12. The insect inhibitory composition of claim 11, wherein said at least one other pesticidal agent is selected from the group consisting of an insect inhibitory protein, an insect inhibitory dsRNA molécule, and an ancillary protein.
13. The insect inhibitory composition of claim 11, wherein said at least one other pesticidal agent exhibits activity against one or more pest species of the orders Lepidoptera, Coleoptera, or Hemiptera.
14. A commodity product produced from the plant, or part thereof, of claim 7, wherein the commodity product comprises a détectable amount of said recombinant nucleic acid molécule or a pesticidal protein encoded by said recombinant nucleic acid molécule.
15. A method for controlling a Lepidopteran species pest or pest infestation, said method comprising:
a. contacting the pest with an insecticidally effective amount of a pesticidal protein as set forth in SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ ID NO: 12, SEQ ID NO: 16, or SEQ ID NO: 18; or
b. contacting the pest with an insecticidally effective amount of one or more
5 pesticidal proteins comprising an amino acid sequence having at least 85% amino acid sequence identity to the full length of SEQ ID NO:4, SEQ ID NO:2, SEQ ID NO:8, SEQ JD NO: 12, SEQ ID NO: 16, or SEQ ID NO: 18.
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US62/210,737 | 2015-08-27 |
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OA18594A true OA18594A (en) | 2018-12-28 |
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