WO2017215327A1 - Séquence d'acide nucléique utilisée pour détecter la plant de soja tolérant aux herbicides dbn9008, et procédé de détection associé - Google Patents

Séquence d'acide nucléique utilisée pour détecter la plant de soja tolérant aux herbicides dbn9008, et procédé de détection associé Download PDF

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WO2017215327A1
WO2017215327A1 PCT/CN2017/079657 CN2017079657W WO2017215327A1 WO 2017215327 A1 WO2017215327 A1 WO 2017215327A1 CN 2017079657 W CN2017079657 W CN 2017079657W WO 2017215327 A1 WO2017215327 A1 WO 2017215327A1
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seq
nucleic acid
dna
complement
dbn9008
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Chinese (zh)
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王登元
于彩虹
张成伟
韩超
李晓娇
姜自芹
张良君
吴竹筠
田康乐
鲍晓明
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北京大北农科技集团股份有限公司
北京大北农生物技术有限公司
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Publication of WO2017215327A1 publication Critical patent/WO2017215327A1/fr

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    • C12Q1/6876—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
    • C12Q1/6888—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms
    • C12Q1/6895—Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for plants, fungi or algae
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
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    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
    • C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
    • C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8274—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for herbicide resistance
    • C12N15/8275—Glyphosate
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    • C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
    • C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
    • C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8274—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for herbicide resistance
    • C12N15/8277—Phosphinotricin
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    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/10—Transferases (2.)
    • C12N9/1025—Acyltransferases (2.3)
    • C12N9/1029—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
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    • C12N9/10—Transferases (2.)
    • C12N9/1085—Transferases (2.) transferring alkyl or aryl groups other than methyl groups (2.5)
    • C12N9/1092—3-Phosphoshikimate 1-carboxyvinyltransferase (2.5.1.19), i.e. 5-enolpyruvylshikimate-3-phosphate synthase
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    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
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    • C12Y203/00—Acyltransferases (2.3)
    • C12Y203/01—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
    • C12Y203/01183—Phosphinothricin acetyltransferase (2.3.1.183)
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    • C12Y205/01—Transferases transferring alkyl or aryl groups, other than methyl groups (2.5) transferring alkyl or aryl groups, other than methyl groups (2.5.1)
    • C12Y205/01019—3-Phosphoshikimate 1-carboxyvinyltransferase (2.5.1.19), i.e. 5-enolpyruvylshikimate-3-phosphate synthase
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00—Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/54—Leguminosae or Fabaceae, e.g. soybean, alfalfa or peanut
    • A01H6/542—Glycine max [soybean]
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    • C12Q2600/00—Oligonucleotides characterized by their use
    • C12Q2600/13—Plant traits

Definitions

  • the invention relates to a nucleic acid sequence for detecting herbicide-tolerant soybean plant DBN9008 and a detection method thereof, in particular to a soybean plant DBN9008 resistant to glyphosate and glufosinate and detecting whether a biological sample contains a specific Method of DNA molecule of transgenic soybean event DBN9008.
  • N-phosphonomethylglycine also known as glyphosate
  • Glyphosate is a competitive inhibitor of phosphoenolpyruvate (PEP), a synthetic substrate for 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS), which inhibits PEP and 3-phosphonic acid Conversion of the two substrates to 5-enolpyruvylshikimate-3-phosphoshikimic acid under EPSPS catalysis, thereby blocking the synthesis of the aromatic amino acid synthesis precursor-shikimate, causing the protein synthesis to interfere with the plant And the death of bacteria.
  • PEP phosphoenolpyruvate
  • EPSPS 5-enolpyruvylshikimate-3-phosphate synthase
  • Glyphosate tolerance can be achieved by expression of a modified EPSPS.
  • the modified EPSPS has a lower affinity for glyphosate, and thus in the presence of glyphosate, EPSPS retains their catalytic activity, i.e., glyphosate tolerance is obtained.
  • Soybean (Glycine max) is one of the top five crops in the world. Herbicide tolerance in soybean production is an important agronomic trait, especially for glyphosate herbicides.
  • the tolerance of soybean to glyphosate herbicide can be obtained by transgenic method to express glyphosate herbicide tolerance gene (EPSPS, CP4) in soybean plants, such as soybean event GTS40-3-2, soybean event MON89788 and so on.
  • EPSPS glyphosate herbicide tolerance gene
  • Glufosinate is a non-systemic, non-selective herbicide in phosphinothricin herbicides. Mainly used for post-emergence control of annual or perennial broad-leaved weeds, by L-phosphinothricin (the active ingredient in glufosinate) against glutamine synthase (an enzyme essential for ammonia detoxification in plants) ) irreversible inhibition to control weeds. Unlike glyphosate root killing, glufosinate first kills leaves and can be transported in the xylem of plants through plant transpiration, with a quick-acting effect between paraquat and glyphosate.
  • Phosphamycin N-acetyltransferase isolated from Streptomyces catalyzes the conversion of L-phosphinothricin by acetylation It is inactive form.
  • a plant-optimized form of the gene expressing PAT has been used in soybeans to confer tolerance to glufosinate herbicides, such as soybean event A5547-127. Therefore, the use of glufosinate herbicides in combination with glufosinate tolerance traits can be a non-selective means of effectively managing glyphosate-resistant weeds.
  • Transgenic herbicide-tolerant soybeans which are non-anti-insect transgenic soybeans, are planted in a certain ratio with transgenic insect-resistant soybeans to delay insect/pest resistance.
  • transgene-specific events are currently identified by PCR using a pair of primers spanning the junction of the inserted transgene and flanking DNA, specifically a first primer comprising a flanking sequence and a second primer comprising an inserted sequence.
  • the object of the present invention is to provide a nucleic acid sequence for detecting herbicide-tolerant soybean plant DBN9008 and The detection method, the genetically modified soybean event DBN9008 has good tolerance to glyphosate herbicide and glufosinate herbicide, and the detection method can accurately and quickly identify whether the biological sample contains the DNA molecule of the specific transgenic soybean event DBN9008.
  • the present invention provides a nucleic acid molecule comprising a nucleic acid sequence comprising at least 11 contiguous nucleotides of SEQ ID NO: 3 or its complement, and/or SEQ ID NO: At least 11 contiguous nucleotides in 4 or its complement.
  • the nucleic acid sequence comprises SEQ ID NO: 1 or its complement, and/or SEQ ID NO: 2 or its complement.
  • nucleic acid sequence comprises SEQ ID NO: 3 or its complement, and/or SEQ ID NO: 4 or its complement.
  • nucleic acid sequence comprises SEQ ID NO: 5 or its complement.
  • the SEQ ID NO: 1 or its complement is a 22 nucleotide sequence in the transgenic soybean event DBN9008 located near the insertion junction at the 5' end of the insertion sequence, or SEQ ID NO: 1
  • the complementary sequence spans the flanking genomic DNA sequence of the soybean insertion site and the DNA sequence at the 5' end of the inserted sequence, and the SEQ ID NO: 1 or its complement can be identified as the presence of the transgenic soybean event DBN9008.
  • the SEQ ID NO: 2 or its complement is a 22 nucleotide sequence in the transgenic soybean event DBN9008 located at the 3' end of the inserted sequence near the insertion junction, the SEQ ID NO: 2 or The complementary sequence spans the DNA sequence at the 3' end of the inserted sequence and the flanking genomic DNA sequence of the soybean insertion site, and the SEQ ID NO: 2 or its complement can be identified as the presence of the transgenic soybean event DBN9008.
  • the nucleic acid sequence may be at least 11 or more contiguous polynucleotides (first nucleic acid sequence) of any part of the transgene insertion sequence of SEQ ID NO: 3 or its complement, or At least 11 or more contiguous polynucleotides (second nucleic acid sequences) of any portion of the 5' flanking soybean genomic DNA region of SEQ ID NO: 3 or its complement.
  • the nucleic acid sequence may further be homologous or complementary to a portion of the SEQ ID NO: 3 comprising the entire SEQ ID NO: 1.
  • the first nucleic acid sequence When the first nucleic acid sequence is used together with the second nucleic acid sequence, these nucleic acid sequences can be used as a DNA primer pair in a DNA amplification method for producing an amplification product.
  • the amplification product produced in the DNA amplification method using the DNA primer pair is an amplification product comprising SEQ ID NO: 1, the presence of the transgenic soybean event DBN9008 or its progeny can be diagnosed.
  • the first and second nucleic acid sequences need not be composed solely of DNA, but may also comprise a mixture of RNA, DNA and RNA, or DNA, RNA or other nucleosides that are not templated as one or more polymerases. A combination of an acid or an analog thereof.
  • the probe or primer of the present invention should be at least about 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 or 22 contiguous nucleotides, which may be selected from Nucleotides as set forth in SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4 and SEQ ID NO: 5.
  • the probe and primer may be continuous from at least about 21 to about 50 or more in length. Nucleotide.
  • the SEQ ID NO: 3 or its complement is in the 5' end of the inserted sequence in the transgenic soybean event DBN9008 a 378 nucleotide sequence in the vicinity of the insertion junction, the SEQ ID NO: 3 or its complement consisting of a 220 nucleotide soy flanking genomic DNA sequence (nucleotide of SEQ ID NO: 3) 1-220), nucleotides in the nucleotide sequence of 58 pDBN4003 constructs (nucleotides 221-278 of SEQ ID NO: 3) and the 5' end DNA sequence of the 100 nucleotide t35S terminator sequence (SEQ.
  • the composition of ID NO:3 nucleotides 279-378), comprising the SEQ ID NO: 3 or its complement can be identified as the presence of the transgenic soybean event DBN9008.
  • the nucleic acid sequence may be at least 11 or more contiguous polynucleotides (third nucleic acid sequence) of any portion of the transgene insertion sequence of SEQ ID NO: 4 or its complement, or the SEQ ID NO At least 11 or more contiguous polynucleotides (fourth nucleic acid sequence) of any portion of the 3' flanking soybean genomic DNA region in 4 or its complement.
  • the nucleic acid sequence may further be homologous or complementary to a portion of the SEQ ID NO: 4 comprising the entire SEQ ID NO: 2.
  • the SEQ ID NO: 4 or its complement is a 432 nucleotide sequence in the transgenic soybean event DBN9008 located near the insertion junction at the 3' end of the insertion sequence, the SEQ ID NO: 4 or The complementary sequence consists of a 167 nucleotide prGm17gTsf1 promoter sequence (nucleotides 1-167 of SEQ ID NO: 4) and 57 nucleotides of the pDBN4003 construct DNA sequence (nucleotides of SEQ ID NO: 4) 168-224) and a 208 nucleotide soy integration site flanking genomic DNA sequence (225-432 of SEQ ID NO: 4) comprising the SEQ ID NO: 4 or its complement which can be identified as a transgenic soybean The existence of the event DBN9008.
  • the SEQ ID NO: 5 or its complement is a sequence that characterizes the transgenic soybean event DBN9008, which is 6883 nucleotides in length, and the genomic and genetic elements specifically included are shown in Table 1. The presence of the SEQ ID NO: 5 or its complement can be identified as the presence of the transgenic soybean event DBN9008.
  • the nucleic acid sequence or its complement may be used in a DNA amplification method to generate an amplicon that detects the presence of a transgenic soybean event DBN9008 or a progeny thereof in a biological sample; the nucleic acid sequence or its complement It can be used in nucleotide assays to detect the presence of the transgenic soybean event DBN9008 or its progeny in a biological sample.
  • the present invention also provides a method for detecting the presence of DNA of a transgenic soybean event DBN9008 in a sample, comprising:
  • the target amplification product comprises at least 11 contiguous nucleotides of SEQ ID NO: 3 or its complement, and/or at least 11 contiguous nucleotides of SEQ ID NO: 4 or its complement.
  • the target amplification product comprises SEQ ID NO: 1 or its complementary sequence at positions 1-11 or 12-22 contiguous nucleotides, and/or SEQ ID NO: 2 or its complement Contiguous nucleotides 1-11 or 12-22.
  • the target amplification product comprises at least one selected from the group consisting of SEQ ID NO: 1 or its complement, SEQ ID NO: 2 or its complement, SEQ ID NO: 6 or its complement, and SEQ ID NO: 7 or its complement.
  • At least one of the primers comprises the nucleic acid sequence or a fragment thereof or a sequence complementary thereto.
  • the primer comprises a first primer selected from the group consisting of SEQ ID NO: 8 and SEQ ID NO: 10; and a second primer selected from the group consisting of SEQ ID NO: 9 and SEQ ID NO: :11.
  • the present invention also provides a method for detecting the presence of DNA of a transgenic soybean event DBN9008 in a sample, comprising:
  • the hybridization of the sample to be detected and the probe is detected.
  • the stringent conditions may be hybridization in a solution of 6 x SSC (sodium citrate), 0.5% SDS (sodium dodecyl sulfate) at 65 ° C, followed by 2 x SSC, 0.1% SDS and 1 x SSC, The membrane was washed once for each 0.1% SDS.
  • 6 x SSC sodium citrate
  • SDS sodium dodecyl sulfate
  • the probe comprises contiguous nucleotides 1 to 11 or 12 to 22 in SEQ ID NO: 1 or its complement, and/or 1 in SEQ ID NO: 2 or its complement 11th or 12th to 22nd consecutive nucleotides.
  • the probe comprises at least one selected from the group consisting of SEQ ID NO: 1 or its complement, SEQ ID NO: 2 or its complement, SEQ ID NO: 6 or its complement, and SEQ ID NO: 7 or its complement.
  • At least one of the probes is labeled with at least one fluorophore.
  • the present invention also provides a DNA for detecting a transgenic soybean event DBN9008 in a sample.
  • Existing methods include:
  • the sample to be detected is contacted with a marker nucleic acid molecule comprising at least 11 contiguous nucleotides of SEQ ID NO: 3 or its complement, and/or SEQ ID NO: 4 or its complement At least 11 consecutive nucleotides;
  • the marker nucleic acid molecule comprises SEQ ID NO: 1 or its complementary sequence at positions 1-11 or 12-22 contiguous nucleotides, and/or SEQ ID NO: 2 or its complement Contiguous nucleotides 1-11 or 12-22.
  • the marker nucleic acid molecule comprises at least one selected from the group consisting of SEQ ID NO: 1 or its complement, SEQ ID NO: 2 or its complement, SEQ ID NO: 6 or its complement, and SEQ ID NO: 7 or its complement.
  • the present invention also provides a DNA detection kit comprising at least one DNA molecule comprising at least 11 contiguous nucleotides of the homologous sequence of SEQ ID NO: 3 or a complement thereof And/or at least 11 contiguous nucleotides of the homologous sequence of SEQ ID NO: 4 or its complement, which may serve as DNA primers or probes specific for the transgenic soybean event DBN9008 or its progeny.
  • the DNA molecule comprises SEQ ID NO: 1 or its complementary sequence at positions 1-11 or 12-22 contiguous nucleotides, and/or SEQ ID NO: 2 or its complement 1 - 11th or 12th to 22nd consecutive nucleotides.
  • the DNA molecule comprises at least one selected from the group consisting of the homologous sequence of SEQ ID NO: 1 or its complement, the homologous sequence of SEQ ID NO: 2 or its complement, SEQ ID NO: 6.
  • the present invention also provides a plant cell or a part comprising a nucleic acid sequence encoding a glyphosate-tolerant EPSPS protein, a nucleic acid sequence encoding a glufosinate-resistant PAT protein, and a nucleic acid sequence of a specific region,
  • the nucleic acid sequence of the specific region includes at least one selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 6, and SEQ ID NO: 7.
  • the present invention also provides a method for producing a soybean plant which is tolerant to a glyphosate herbicide and/or a glufosinate herbicide, comprising introducing a glyphosate into the genome of the soybean plant.
  • nucleic acid sequence of a phosphine-tolerant EPSPS protein and/or a nucleic acid sequence encoding a glufosinate-resistant PAT protein and a nucleic acid sequence of a specific region selected from the group consisting of SEQ ID NO: 1, SEQ ID NO A nucleic acid sequence of at least one of the sequences of SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, and SEQ ID NO: 7.
  • the method of producing a soybean plant having tolerance to a glyphosate herbicide and/or a glufosinate herbicide comprises:
  • the first genetically modified soybean event DBN9008 that is tolerant to glyphosate herbicides and/or glufosinate herbicides
  • the parent soybean plant is sexually crossed with a second parent soybean plant lacking glyphosate and/or glufosinate tolerance, thereby producing a large number of progeny plants;
  • progeny plants that are tolerant to glyphosate and/or glufosinate are selected.
  • the present invention also provides a method of cultivating a soybean plant which is tolerant to a glyphosate herbicide and/or a glufosinate herbicide, comprising:
  • Planting at least one soybean seed, the genome of the soybean seed comprising a nucleic acid sequence encoding a glyphosate-tolerant EPSPS protein and/or a nucleic acid sequence encoding a glufosinate-tolerant PAT protein, and a nucleic acid sequence of a specific region;
  • the nucleic acid sequence of the specific region is selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, and SEQ ID NO: 7. At least one nucleic acid sequence in the sequence shown.
  • the present invention also provides a method of protecting a plant from damage caused by a herbicide, comprising applying a herbicide containing an effective amount of glyphosate and/or glufosinate to at least one genetically modified soybean.
  • the transgenic soybean plant comprises in its genome a cell selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO : 6 and at least one nucleic acid sequence of the sequence of SEQ ID NO: 7, the transgenic soybean plant having tolerance to a glyphosate herbicide and/or a glufosinate herbicide.
  • the present invention also provides a method of controlling field weeds comprising applying a herbicide containing an effective amount of glyphosate and/or glufosinate to a field in which at least one transgenic soybean plant is planted.
  • the transgenic soybean plant comprises in its genome a cell selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6, and SEQ ID NO : at least one nucleic acid sequence in the sequence of 7 which has tolerance to a glyphosate herbicide and/or a glufosinate herbicide.
  • the present invention also provides a method for controlling glyphosate-resistant weeds in a field of glyphosate-tolerant plants, comprising applying a herbicide containing an effective dose of glufosinate to at least one planting
  • the glyphosate-tolerant transgenic soybean plant comprises in its genome a SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 At least one of the sequences of SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6 and SEQ ID NO: 7, the glyphosate-tolerant transgenic soybean plant simultaneously has a grass Tolerance of ammonium phosphine herbicides.
  • the present invention also provides a method for delaying insect resistance comprising planting at least one transgenic soybean plant having glyphosate and/or glufosinate tolerance in a field planted with insect-resistant soybean plants.
  • the transgenic soybean plant having glyphosate and/or glufosinate tolerance comprises, in its genome, selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, and SEQ ID NO: 4. At least one of the sequences of SEQ ID NO: 5, SEQ ID NO: 6 and SEQ ID NO: 7.
  • the present invention also provides an agricultural product or commodity comprising a polynucleotide of SEQ ID NO: 1 or SEQ ID NO: 2, which is lecithin, fatty acid, glycerol, sterol, soybean Tablets, soy flour, soy protein or its concentrate, soybean oil, soy protein fiber, soy milk clot or tofu.
  • a polynucleotide of SEQ ID NO: 1 or SEQ ID NO: 2 which is lecithin, fatty acid, glycerol, sterol, soybean Tablets, soy flour, soy protein or its concentrate, soybean oil, soy protein fiber, soy milk clot or tofu.
  • nucleic acid sequence of the present invention for detecting the herbicide-tolerant soybean plant DBN9008 and its detection method the following definitions and methods can better define the present invention and guide those skilled in the art to carry out the invention unless otherwise stated.
  • the terms are understood in accordance with the conventional usage of one of ordinary skill in the art.
  • soybean refers to soy beans (Glycine max) and includes all plant varieties that can be mated with soybeans, including wild soybean species.
  • plant includes whole plants, plant cells, plant organs, plant protoplasts, plant cell tissue cultures from which plants can be regenerated, plant callus, plant clumps, and intact plants in plants or plant parts.
  • Cells such as embryos, pollen, ovules, seeds, leaves, flowers, branches, fruits, stems, roots, root tips, anthers, and the like.
  • parts of the transgenic plants within the scope of the invention include, but are not limited to, plant cells, protoplasts, tissues, callus, embryos, and flowers, stems, fruits, leaves and roots, the above plant parts being derived from the prior invention using the invention.
  • gene refers to a nucleic acid fragment expressing a specific protein, including a regulatory sequence preceding the coding sequence (5' non-coding sequence) and a regulatory sequence following the coding sequence (3' non-coding sequence).
  • Native gene refers to a gene that is naturally found to have its own regulatory sequences.
  • Chimeric gene refers to any gene that is not a native gene that contains regulatory and coding sequences that are not found in nature.
  • Endogenous gene refers to a native gene that is located in its natural location in the genome of an organism.
  • a “foreign gene” is a foreign gene that is present in the genome of an organism and does not originally exist, and also refers to a gene that is introduced into a recipient cell by a transgenic step.
  • the foreign gene may comprise a native gene or a chimeric gene inserted into the non-native organism.
  • a "transgene” is a gene that has been introduced into the genome by a transformation program.
  • the site in which the recombinant DNA has been inserted in the plant genome may be referred to as an "insertion site” or a "target site.”
  • flanking DNA may comprise a genome naturally present in an organism such as a plant or an exogenous (heterologous) DNA introduced by a transformation process, such as a fragment associated with a transformation event.
  • flanking DNA can include a combination of natural and exogenous DNA.
  • flanking region or “flanking sequence” or “genome boundary region” or “genome boundary sequence” means at least 3, 5, 10, 11, 15, 20, 50, 100, 200, 300, 400 A sequence of 1000, 1500, 2000, 2500 or 5000 base pairs or longer located directly upstream or downstream of the original exogenous insert DNA molecule and adjacent to the original exogenously inserted DNA molecule.
  • flanking region When the flanking region is located downstream, it may also be referred to as "left border flanking” or “3' flanking” or “3' genomic border region” or “genome 3' border sequence” and the like. When the flanking region is located upstream, it may also be referred to as “right border flanking” or “5' flanking” or “5' genomic border region” or “genome 5' border sequence” and the like.
  • a transformation program that causes random integration of foreign DNA results in transformants containing different flanking regions that are specifically contained by each transformant.
  • the recombinant DNA is introduced into the plant by conventional hybridization, its flanking region Usually does not change.
  • Transformants also contain unique junctions between heterologous insert DNA and segments of genomic DNA or between two segments of genomic DNA or between two heterologous DNAs. "Joining” is the point at which two specific DNA fragments are joined. For example, the junction is present at a position where the insert DNA joins the flanking DNA. The junction is also present in the transformed organism, where the two DNA fragments are joined together in a manner modified from that found in the native organism.
  • "Joining DNA” and “joining region” refer to DNA containing a junction.
  • the present invention provides a transgenic soybean event called DBN9008 and its progeny, which is a soybean plant DBN9008 comprising plants and seeds of the transgenic soybean event DBN9008 and plant cells thereof or a regenerable portion thereof, the transgene Plant parts of soybean event DBN9008, including but not limited to cells, pollen, ovules, flowers, buds, roots, stems, leaves, pods, and products from soybean plant DBN9008, such as soy cakes, flours and oils, specifically lecithin, Fatty acids, glycerol, sterols, edible oils, defatted soy flakes, including defatted and baked soy flour, soy milk clots, tofu, soy protein concentrate, isolated soy protein, hydrolyzed vegetable protein, organized soy protein and soy Protein fiber.
  • the transgenic soybean event DBN9008 of the present invention comprises a DNA construct which, when expressed in plant cells, is rendered tolerant to glyphosate herbicides and glufosinate herbicides.
  • the DNA construct comprises two tandem expression cassettes, the first expression cassette comprising a suitable promoter for expression in a plant and a suitable polyadenylation signal sequence, the promoter being operably linked to the coding A gene for 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) which is tolerant to glyphosate herbicides.
  • EPSPS 5-enolpyruvylshikimate-3-phosphate synthase
  • a second expression cassette comprises a suitable promoter for expression in a plant and a suitable polyadenylation signal sequence operably linked to a phosphinothricin N-acetyltransferase (PAT)
  • PAT phosphinothricin N-acetyltransferase
  • the promoter may be a suitable promoter isolated from a plant, including constitutive, inducible and/or tissue-specific promoters including, but not limited to, cauliflower mosaic virus (CaMV) 35S Promoter, Scrophularia mosaic virus (FMV) 35S promoter, Tsf1 promoter, Ubiquitin promoter, actin promoter, Agrobacterium tumefaciens nopaline synthase (NOS) Promoter, octopine synthase (OCS) promoter, Cestrum yellow leaf curling virus promoter, potato tuber storage protein (Patatin) promoter, ribulose-1,5-bisphosphate carboxylase /Oxygenase (RuBisCO) promoter, glutathione S-transferase (GST) promoter, E9 promoter, GOS promoter, alcA/alcR promoter, Agrobacterium rhizogenes RolD promoter and pseudo-South Arabidopsis Suc2
  • the polyadenylation signal sequence may be a suitable polyadenylation signal sequence that functions in plants, including, but not limited to, from Agrobacterium tumefaciens.
  • Polyadenylation signal sequence of nopaline synthase (NOS) gene derived from cauliflower mosaic virus (CaMV) 35S terminator, derived from pea ribulose-1,5-bisphosphate carboxylase/oxygenase
  • NOS nopaline synthase
  • CaMV cauliflower mosaic virus
  • PINII protease inhibitor II
  • the expression cassette may also include other genetic elements including, but not limited to, enhanced Sub- and signal peptides/transport peptides.
  • the enhancer can enhance the expression level of a gene including, but not limited to, Tobacco Etch Virus (TEV) Translational Activating Factor, CaMV35S Enhancer, and FMV35S Enhancer.
  • TSV Tobacco Etch Virus
  • CaMV35S Enhancer CaMV35S Enhancer
  • FMV35S Enhancer FMV35S Enhancer.
  • the signal peptide/transport peptide can direct the transport of EPSPS proteins and/or PAT proteins to extracellular or specific organelles or compartments within the cell, for example, by targeting chloroplasts encoding chloroplast transit peptide sequences, or by using 'KDEL' retention sequence targets To the endoplasmic network.
  • the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene may be isolated from Agrobacterium tumefaciens sp. CP4 strain and may be optimized by codon or otherwise Polynucleotides encoding EPSPS for the purpose of increasing the stability and availability of transcripts in transformed cells.
  • the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene can also be used as a selectable marker gene.
  • glyphosate refers to N-phosphonomethylglycine and its salts
  • treatment with "glyphosate herbicide” means treatment with any herbicide preparation containing glyphosate.
  • the choice of the use rate of a certain glyphosate formulation in order to achieve an effective biological dose does not exceed the skill of a general agronomic technician.
  • Treatment of a field comprising plant material derived from the herbicide-tolerant soybean plant DBN9008 using any of the glyphosate-containing herbicide formulations will control weed growth in the field without affecting herbicide tolerance Growth or yield of plant material of the recipient soybean plant DBN9008.
  • PAT phosphinothricin N-acetyltransferase
  • PTC 2-amino-4-methylphosphonobutyrate
  • PTC is an inhibitor of glutamine synthetase.
  • PTC is the structural unit of the antibiotic 2-amino-4-methylphosphono-alanyl-alanine.
  • This tripeptide has anti-gram-positive and Gram-negative bacteria and antifungal Botrytis cinerea (Botrytis). Activity of cinerea).
  • the phosphinothricin N-acetyltransferase (PAT) gene can also be used as a selectable marker gene.
  • glufosinate also known as glufosinate, refers to ammonium 2-amino-4-[hydroxy(methyl)phosphono]butanoate
  • treatment with "glufosinate herbicide” means using any one of The herbicide formulation of glufosinate is treated.
  • the choice of the use rate of a certain glufosinate formulation does not exceed the skill of a general agronomic technician.
  • Treatment of a field comprising plant material derived from the herbicide-tolerant soybean plant DBN9008 using any herbicide formulation containing glufosinate will control weed growth in the field without affecting herbicide resistance Growth or yield of plant material of the recipient soybean plant DBN9008.
  • the DNA construct is introduced into a plant using a transformation method including, but not limited to, Agrobacterium-mediated transformation, gene gun transformation, and pollen tube pathway transformation.
  • the Agrobacterium-mediated transformation method is a common method for plant transformation.
  • the foreign DNA to be introduced into the plant is cloned between the left and right border consensus sequences of the vector, i.e., the T-DNA region.
  • the vector is transformed into Agrobacterium cells, and subsequently, the Agrobacterium cells are used to infect plant tissues, and the T-DNA region of the vector containing the foreign DNA is inserted into the plant genome.
  • the gene gun transformation method is to bombard plant cells (particle-mediated biological bombardment transformation) with a vector containing foreign DNA.
  • the pollen tube channel transformation method utilizes a natural pollen tube channel (also known as a pollen tube-guided tissue) formed after pollination of a plant, and carries the foreign DNA into the embryo sac via the nucellus channel.
  • a natural pollen tube channel also known as a pollen tube-guided tissue
  • the transgenic plants After transformation, the transgenic plants must be regenerated from the transformed plant tissue and the progeny with the exogenous DNA selected using appropriate markers.
  • a DNA construct is a combination of DNA molecules interconnected that provides one or more expression cassettes.
  • the DNA construct is preferably a plasmid capable of self-replication in bacterial cells and containing different restriction enzyme sites, and the restriction enzyme sites contained therein are introduced for providing functional gene elements, ie, promoters. , introns, leader sequences, coding sequences, 3' terminator regions, and other sequences of DNA molecules.
  • the expression cassette contained in the DNA construct includes genetic elements necessary for providing transcription of messenger RNA, which can be designed to be expressed in prokaryotic or eukaryotic cells.
  • the expression cassettes of the invention are designed to be most preferably expressed in plant cells.
  • a transgenic "event” is obtained by transforming a plant cell with a heterologous DNA construct, comprising a nucleic acid expression cassette containing the gene of interest, inserted into the plant genome by a transgenic method to produce a plant population, and regenerating the plant population And selecting a particular plant with the characteristics of insertion into a particular genomic locus.
  • the term “event” includes the original transformant of a heterologous DNA and the progeny of the transformant.
  • the term “event” also includes progeny obtained by sexual crossing between a transformant and another variety of individuals containing heterologous DNA, even after repeated backcrossing with the backcross parent, insert DNA and flanking from the transformant parent.
  • Genomic DNA is also present at the same chromosomal location in the progeny of the cross.
  • the term "event” also refers to a DNA sequence from an original transformant comprising an insert DNA and a flanking genomic sequence immediately adjacent to the inserted DNA, the DNA sequence being expected to be transferred into a progeny containing the insert DNA
  • the parental line eg, the original transformant and its progeny produced by selfing
  • the parental line is produced by sexual crossing with a parental line that does not contain the inserted DNA, and the progeny receives the inserted DNA comprising the gene of interest.
  • Recombinant in the context of the invention refers to the form of DNA and/or proteins and/or organisms that are normally not found in nature and are thus produced by human intervention. Such manual intervention can produce recombinant DNA molecules and/or recombinant plants.
  • the "recombinant DNA molecule” is obtained by artificially combining two sequence segments which are otherwise isolated, for example by chemical synthesis or by manipulation of isolated nucleic acid segments by genetic engineering techniques. Techniques for performing nucleic acid manipulation are well known.
  • transgene includes any cell, cell line, callus, tissue, plant part or plant, and the above genotypes are altered by the presence of a heterologous nucleic acid, including the transgene that was originally altered as such and by The original transgenic body is a progeny individual that is produced by sexual or asexual reproduction.
  • the term "transgene” does not include genomic (chromosomal or extrachromosomal) alterations by conventional plant breeding methods or naturally occurring events, such as random allogeneic fertilization, non-recombinant viral infection, non-recombination. Bacterial transformation, non-recombinant transposition or spontaneous mutation.
  • Heterologous in the context of the invention means that the first molecule in nature is generally not found in combination with the second molecule.
  • the molecule can be derived from the first species and inserted into the genome of the second species.
  • the molecule is heterologous to the host and is artificially introduced into the genome of the host cell.
  • the transgenic soybean event DBN9008 which is tolerant to the glyphosate herbicide and the glufosinate herbicide, is cultured by first sexually crossing the first parent soybean plant with the second parent soybean plant, thereby producing a variety of a generation of progeny plants consisting of soybean plants grown from the transgenic soybean event DBN9008 and its progeny, the transgenic soybean event DBN9008 and its progeny are by using the glyphosate herbicide and grass of the invention
  • Ammonium phosphine herbicide is obtained by transforming a tolerant expression cassette, and the second parent soybean plant lacks tolerance to glyphosate herbicide and/or glufosinate herbicide; then selecting glyphosate herbicide And/or glufosinate herbicides are applied to tolerant progeny plants which can produce soybean plants that are tolerant to glyphosate herbicides and glufosinate herbicides.
  • These steps may further comprise backcrossing the progeny plants tolerant to the application of the glyphosate herbicide and/or the glufosinate herbicide to the second parent soybean plant or the third parent soybean plant, and then applying the grass Glyphosate herbicides, glufosinate herbicides or identification of molecular markers associated with traits (eg, DNA molecules containing the junction sites identified at the 5' and 3' ends of the inserted sequence in the transgenic soybean event DBN9008)
  • traits eg, DNA molecules containing the junction sites identified at the 5' and 3' ends of the inserted sequence in the transgenic soybean event DBN9008
  • Progeny are selected to produce soybean plants that are tolerant to glyphosate herbicides and glufosinate herbicides.
  • transgenic plants can also be crossed to produce progeny containing two separate, separately added exogenous genes. Selfing of appropriate offspring can result in progeny plants that are homozygous for both added exogenous genes.
  • Backcrossing of parental plants and outcrossing with non-transgenic plants as previously described are also contemplated, as are asexual reproduction.
  • Soybeans transgenic with Bt can kill insects/pests such as lepidoptera, but there are also a small number of insects/pests that survive. After several generations of breeding, resistant insects/pests resistant to Bt may be produced.
  • the US Environmental Protection Agency has given the following guidance on the use of GM crops, and needs to provide a certain proportion of shelter soybeans (may be non-anti-insect genetically modified soybeans (such as herbicide-tolerant genetically modified soybeans). , or genetically modified soybeans that are not resistant to non-target pests, or non-GM soybeans.
  • probe is an isolated nucleic acid molecule to which is incorporated a conventional detectable label or reporter molecule, for example, a radioisotope, a ligand, a chemiluminescent agent, or an enzyme.
  • the probe is complementary to a strand of the target nucleic acid, and in the present invention, the probe is complementary to a DNA strand from the genome of the transgenic soybean event DBN9008, whether the genomic DNA is derived from the transgenic soybean event DBN9008 or seed or derived from a transgene Plant or seed or extract of soybean event DBN9008.
  • the probe of the present invention includes not only deoxyribonucleic acid or ribonucleic acid, but also polyamide and other probe materials that specifically bind to a target DNA sequence and can be used to detect the presence of the target DNA sequence.
  • primer is an isolated nucleic acid molecule that is bound to a complementary target DNA by nucleic acid hybridization, annealing. On the strand, a hybrid is formed between the primer and the target DNA strand, and then extended along the target DNA strand by the action of a polymerase such as a DNA polymerase.
  • Primer pairs of the invention are directed to their use in amplification of a target nucleic acid sequence, for example, by polymerase chain reaction (PCR) or other conventional nucleic acid amplification methods.
  • the length of the probe and primer is generally 11 polynucleotides or more, preferably 18 polynucleotides or more, more preferably 24 polynucleotides or more, and most preferably 30 polynucleosides. Sour or more.
  • Such probes and primers specifically hybridize to the target sequence under highly stringent hybridization conditions.
  • a probe different from the target DNA sequence and capable of maintaining hybridization ability to the target DNA sequence can be designed by a conventional method, preferably, the probe and the primer of the present invention have a complete DNA sequence with the contiguous nucleic acid of the target sequence. Identity.
  • the primers and probes based on the flanking genomic DNA and the inserted sequences of the present invention can be determined by a conventional method, for example, by isolating a corresponding DNA molecule from a plant material derived from the transgenic soybean event DBN9008, and determining the nucleic acid sequence of the DNA molecule.
  • the DNA molecule comprises a transgene insert and a soybean genome flanking sequence, and a fragment of the DNA molecule can be used as a primer or probe.
  • the nucleic acid probes and primers of the invention hybridize to the target DNA sequence under stringent conditions. Any conventional nucleic acid hybridization or amplification method can be used to identify the presence of DNA derived from the transgenic soybean event DBN9008 in the sample.
  • a nucleic acid molecule or fragment thereof is capable of specifically hybridizing to other nucleic acid molecules under certain circumstances. As used in the present invention, if two nucleic acid molecules are capable of forming an anti-parallel double-stranded nucleic acid structure, it can be said that the two nucleic acid molecules are capable of specifically hybridizing to each other. If two nucleic acid molecules exhibit complete complementarity, one of the nucleic acid molecules is said to be the "complement" of the other nucleic acid molecule.
  • nucleic acid molecules when each nucleotide of one nucleic acid molecule is complementary to a corresponding nucleotide of another nucleic acid molecule, the two nucleic acid molecules are said to exhibit "complete complementarity.”
  • Two nucleic acid molecules are said to be “minimally complementary” if they are capable of hybridizing to one another with sufficient stability such that they anneal under at least conventional "low stringency” conditions and bind to each other.
  • two nucleic acid molecules are said to be “complementary” if they are capable of hybridizing to one another with sufficient stability such that they anneal under conventional "highly stringent” conditions and bind to each other.
  • Deviation from complete complementarity is permissible as long as such deviation does not completely prevent the two molecules from forming a double-stranded structure.
  • a nucleic acid molecule In order for a nucleic acid molecule to function as a primer or probe, it is only necessary to ensure that it is sufficiently complementary in sequence to allow for the formation of a stable double-stranded structure at the particular solvent and salt concentration employed.
  • a substantially homologous sequence is a nucleic acid molecule that is capable of specifically hybridizing to a complementary strand of another nucleic acid molecule that is matched under highly stringent conditions.
  • Suitable stringent conditions for promoting DNA hybridization for example, treatment with 6.0 x sodium chloride / sodium citrate (SSC) at about 45 ° C, followed by washing with 2.0 x SSC at 50 ° C, these conditions are known to those skilled in the art. It is well known.
  • the salt concentration in the washing step can be selected from about 2.0 x SSC under low stringency conditions, 50 ° C to about 0.2 x SSC, 50 ° C under highly stringent conditions.
  • the temperature conditions in the washing step can be raised from a low temperature strict room temperature of about 22 ° C to about 65 ° C under highly stringent conditions. Both the temperature conditions and the salt concentration can be changed, or one of them remains unchanged while the other variable changes.
  • a nucleic acid molecule of the invention can be under moderate stringency conditions, for example at about 2.0 x SSC and about 65 ° C with SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4. SEQ ID NO: 5, SEQ ID NO: 6 and one or more nucleic acid molecules of SEQ ID NO: 7 or a complement thereof, or any of the above sequences are specifically hybridized.
  • a nucleic acid molecule of the invention is under highly stringent conditions with SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5, SEQ ID NO: 6 and one or more of the nucleic acid molecules of SEQ ID NO: 7 or a complement thereof, or any of the above sequences, specifically hybridize.
  • a preferred marker nucleic acid molecule has SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 6 or SEQ ID NO: 7 or its complement, or any fragment of the above sequence.
  • Another preferred marker nucleic acid molecule of the invention has 80% to SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 6 or SEQ ID NO: 7 or a complement thereof, or any fragment of the above sequence 100% or 90% to 100% sequence identity.
  • SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 6 and SEQ ID NO: 7 can be used as markers in plant breeding methods to identify progeny of genetic crosses.
  • Hybridization of the probe to the target DNA molecule can be detected by any method known to those skilled in the art including, but not limited to, fluorescent labeling, radioactive labeling, antibody labeling, and chemiluminescent labeling.
  • stringent conditions refer to conditions in which only primers are allowed to hybridize to a target nucleic acid sequence in a DNA thermal amplification reaction, and A primer for the corresponding wild-type sequence (or its complement) of the target nucleic acid sequence is capable of binding to the target nucleic acid sequence, and preferably produces a unique amplification product, the amplification product, ie, the amplicon.
  • target sequence means that the probe or primer hybridizes only to the target sequence in the sample containing the target sequence under stringent hybridization conditions.
  • amplified DNA refers to a nucleic acid amplification product of a target nucleic acid sequence that is part of a nucleic acid template.
  • a soybean plant is produced by a sexual hybridization method comprising the transgenic soybean event DBN9008 of the present invention, or whether the soybean sample collected from the field comprises a transgenic soybean event DBN9008, or a soybean extract, such as a meal, powder or oil, comprises Transgenic Soybean Event DBN9008, DNA extracted from soybean plant tissue samples or extracts can be diagnostic amplicon by the nucleic acid amplification method using primer pairs to generate the presence of DNA for the transgenic soybean event DBN9008.
  • the primer pair includes a first primer derived from a flanking sequence adjacent to the inserted foreign DNA insertion site in the plant genome, and a second primer derived from the inserted foreign DNA.
  • the amplicon has a length and sequence that is also diagnostic for the transgenic soybean event DBN9008.
  • the length of the amplicon may be the binding length of the primer pair plus one nucleotide base pair, preferably plus about fifty nucleotide base pairs, more preferably about two hundred and fifty nucleotides. Base pairs, most preferably plus about four hundred and fifty nucleotide base pairs or more.
  • the primer pair can be derived from a flanking genomic sequence inserted on both sides of the DNA to produce an amplicon comprising the entire inserted nucleotide sequence.
  • One of the primer pairs derived from the plant genome sequence can be located at a distance from the inserted DNA sequence, which can range from one nucleotide base pair to about 20,000 nucleotide base pairs.
  • the use of the term "amplicon" specifically excludes primer dimers formed in DNA thermal amplification reactions.
  • the nucleic acid amplification reaction can be carried out by any of the nucleic acid amplification reaction methods known in the art, including polymerase chain reaction (PCR).
  • PCR polymerase chain reaction
  • Various nucleic acid amplification methods are well known to those skilled in the art.
  • PCR amplification method has been It has been developed to amplify up to 22 kb of genomic DNA and up to 42 kb of phage DNA. These methods, as well as other DNA amplification methods in the art, can be used in the present invention.
  • the inserted exogenous DNA sequence and the flanking DNA sequence from the transgenic soybean event DBN9008 can be amplified by using the provided primer sequence for the genome of the transgenic soybean event DBN9008, and the PCR amplicon or cloned DNA is subjected to standardization after amplification. DNA sequencing.
  • a DNA detection kit based on a DNA amplification method contains DNA primer molecules which specifically hybridize to a target DNA under appropriate reaction conditions and amplify a diagnostic amplicon.
  • the kit can provide agarose gel based detection methods or a number of methods known in the art for detecting diagnostic amplicons.
  • Kit comprising a DNA primer homologous or complementary to any portion of the soybean genomic region of SEQ ID NO: 3 or SEQ ID NO: 4, and homologous or complementary to any portion of the transgene insertion region of SEQ ID NO: 5 It is provided by the present invention.
  • the primer pairs that are particularly useful in identifying DNA amplification methods are SEQ ID NO: 8 and SEQ ID NO: 9, which amplify a diagnostic amplification homologous to a portion of the 5' transgene/genomic region of the transgenic soybean event DBN9008. , wherein the amplicon comprises SEQ ID NO: 1.
  • Other DNA molecules used as DNA primers may be selected from SEQ ID NO:5.
  • the amplicons produced by these methods can be detected by a variety of techniques.
  • One such method is Genetic Bit Analysis, which designs a DNA oligonucleotide strand spanning the inserted DNA sequence and adjacent flanking genomic DNA sequences.
  • the oligonucleotide strand is immobilized in the microwell of a microplate, and after PCR amplification of the target region (one primer is used in each of the inserted sequences and adjacent flanking genomic sequences), the single-stranded PCR product Hybridization can be performed with a fixed oligonucleotide strand and as a template for a single base extension reaction using a DNA polymerase and ddNTPs specifically labeled for the next expected base.
  • the results can be obtained by fluorescence or ELISA methods.
  • the signal represents the presence of an insert/flanking sequence indicating that amplification, hybridization and single base extension reactions were successful.
  • Another method is the pyrosequencing technique.
  • This method designs an oligonucleotide chain spanning the inserted DNA sequence and the adjacent genomic DNA binding site. Hybridization of the oligonucleotide strand and the single-stranded PCR product of the target region (using one primer in each of the inserted sequences and adjacent flanking genomic sequences), followed by DNA polymerase, ATP, sulfurylase, fluorescein The enzyme, apyrase, adenosine-5'-phosphorus sulphate and luciferin are incubated together. The dNTPs were separately added and the generated optical signal was measured. The light signal represents the presence of an insertion/flanking sequence indicating that amplification, hybridization, and single base or multiple base extension reactions are successful.
  • the fluorescence polarization phenomenon described by Chen et al. is also a method that can be used to detect the amplicons of the present invention.
  • Using this approach requires designing an oligonucleotide strand spanning the inserted DNA sequence and the adjacent genomic DNA binding site. Hybridization of the oligonucleotide strand and the single-stranded PCR product of the target region (using one primer in each of the inserted sequences and adjacent flanking genomic sequences), followed by DNA polymerase and a fluorescently labeled ddNTP Incubation. Single base extensions result in the insertion of ddNTPs. This insertion can be used to measure changes in its polarization using a fluorometer. The change in polarization represents the presence of an insert/flanking sequence indicating that amplification, hybridization and single base extension reactions were successful.
  • Taqman is described as a method for detecting and quantifying the presence of DNA sequences, which is described in detail in the instructions provided by the manufacturer. Briefly exemplified, a FRET oligonucleotide probe spanning the inserted DNA sequence and the adjacent genomic flanking binding site is designed. The FRET probe and PCR primers (using one primer in each of the inserted sequences and adjacent flanking genomic sequences) are subjected to a circular reaction in the presence of a thermostable polymerase and dNTPs. Hybridization of the FRET probe results in cleavage of the fluorescent and quenching moieties on the FRET probe and release of the fluorescent moiety. The generation of the fluorescent signal represents the presence of an insert/flanking sequence indicating that amplification and hybridization were successful.
  • Suitable techniques for detecting plant material derived from the herbicide tolerance transgenic soybean event DBN9008 may also include Southern blot hybridization, Northern blot hybridization, and in situ hybridization based on the hybridization principle.
  • suitable techniques include incubating probes and samples, washing to remove unbound probes and detecting whether the probes have hybridized.
  • the detection method depends on the type of label attached to the probe, for example, the radiolabeled probe can be detected by X-ray exposure and development, or the enzyme-labeled probe can be detected by color change by substrate conversion.
  • Tyangi et al. (Nat. Biotech. 14: 303-308, 1996) describe the use of molecular markers in sequence detection. Briefly described below, a FRET oligonucleotide probe spanning the inserted DNA sequence and the adjacent genomic flanking binding site was designed. The unique structure of the FRET probe results in a secondary structure that is capable of maintaining the fluorescent moiety and the quenching moiety at close distances.
  • the FRET probe and PCR primers (using one primer in each of the inserted sequences and adjacent flanking genomic sequences) are subjected to a circular reaction in the presence of a thermostable polymerase and dNTPs.
  • hybridization of the FRET probe to the target sequence results in loss of the secondary structure of the probe, thereby spatially separating the fluorescent moiety from the quenching moiety, producing a fluorescent signal.
  • the generation of the fluorescent signal represents the presence of an insert/flanking sequence indicating that amplification and hybridization were successful.
  • a nanotube device comprising an electronic sensor for detecting a DNA molecule or a nanobead that binds to a specific DNA molecule and thus detectable is useful for detecting the DNA molecule of the present invention.
  • DNA detection kits can be developed using the compositions described herein and methods described or known in the art of DNA detection.
  • the kit facilitates the identification of the presence or absence of DNA of the transgenic soybean event DBN9008 in the sample, as well as the cultivation of soybean plants containing the DNA of the transgenic soybean event DBN9008.
  • the kit may contain a DNA primer or probe that is homologous or complementary to at least a portion of SEQ ID NO: 1, 2, 3, 4, or 5, or contains other DNA primers or probes that are homologous to or DNA complementary to DNA-transgenic genetic elements that can be used in DNA amplification reactions or as probes in DNA hybridization methods.
  • the DNA structure contained in the soybean genome and the transgenic insert sequence described in Figure 1 and Table 1 and the soybean genome binding site comprises: the soybean plant DBN9008 flanking genomic region located at the 5' end of the transgene insert, from the left side of the Agrobacterium A portion of the border region (LB) is inserted into the sequence, and the first expression cassette is operably linked to the glufosinate tolerance of the Streptomyces by the tandem repeat of the cauliflower mosaic virus 35S promoter (pr35S) containing the enhancer region Phosphamycin N-acetyltransferase (cPAT) and operably linked to the cauliflower mosaic virus 35S terminator (t35S)
  • the second expression cassette is flanked by the soybean Tsf1 gene (encoding elongation factor EF-1 ⁇ ) promoter (prGm17gTsf1) and operably linked to the Arabidopsis EPSPS chloroplast transit peptide coding sequence (spAtCTP2), operably linked to A glyphosate
  • the DNA molecule as a primer may be any part derived from a transgenic insert sequence in soybean plant DBN9008, or may be any part of a DNA region derived from the flanking soybean genome in the transgenic soybean event DBN9008.
  • the genetically modified soybean event DBN9008 can be combined with other genetically modified soybean varieties, such as soybean tolerance (such as 2,4-D, dicamba, etc.) or genetically modified soybean varieties carrying other insect-resistant genes (such as Cry1Ac, Cry2Ab, etc.). .
  • soybean tolerance such as 2,4-D, dicamba, etc.
  • genetically modified soybean varieties carrying other insect-resistant genes such as Cry1Ac, Cry2Ab, etc.
  • Various combinations of all of these different transgenic events, bred together with the transgenic soybean event DBN9008 of the present invention can provide improved hybrid transgenic soybean varieties that are resistant to a variety of pests and tolerant to a variety of herbicides. These varieties can exhibit more excellent characteristics such as yield increase than non-transgenic varieties and single-trait transgenic varieties.
  • the present invention provides a nucleic acid sequence for detecting a herbicide-tolerant soybean plant DBN9008 and a method for detecting the same, and the transgenic soybean event DBN9008 is resistant to the phytotoxic effect of an agricultural herbicide containing glyphosate and/or glufosinate.
  • the dual-characterized soybean plant expresses a glyphosate-resistant 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) protein of Agrobacterium strain CP4, which confers tolerance to glyphosate to the plant,
  • EPSPS 5-enolpyruvylshikimate-3-phosphate synthase
  • PAT phosphinothricin N-acetyltransferase
  • Dual-trait soybeans have the following advantages: 1) the ability to apply glyphosate-containing agricultural herbicides to soybean crops for broad-spectrum weed control; 2) glufosinate-tolerant traits in combination with glufosinate herbicides (with grass) Glyphosate herbicides mixed or alternately used as a non-selective means to effectively manage glyphosate-resistant weeds; 3) Herbicide-tolerant transgenic soybeans as non-anti-insect transgenic soybeans, and transgenic insect-resistant soybeans A certain proportion of planting together can delay insect/pest resistance; 4) soybean yield is not reduced.
  • genes encoding glyphosate tolerance and glufosinate tolerance traits are linked to the same DNA segment and are present at a single locus in the genome of the transgenic soybean event DBN9008, which provides enhanced breeding efficiency and Molecular markers are enabled to track transgenic inserts in the breeding population and its progeny.
  • SEQ ID NO: 1 or its complement, SEQ ID NO: 2 or its complement, SEQ ID NO: 6 or its complement, or SEQ ID NO: 7 or its complement may be used as DNA primers.
  • a probe to generate an amplification product diagnosed as transgenic soybean event DBN9008 or a progeny thereof, and the presence of plant material derived from the transgenic soybean event DBN9008 can be identified quickly, accurately, and stably.
  • SEQ ID NO: 1 transgenic soybean event DBN9008 is a 22 nucleotide sequence located near the insertion junction at the 5' end of the inserted sequence, wherein nucleotides 1-11 and 12-22 Glycosylates are located on both sides of the insertion site of the soybean genome;
  • SEQ ID NO: 2 in the transgenic soybean event DBN9008 at the insertion junction at the 3' end of the insertion sequence a sequence of 22 nucleotides in length near the position, wherein nucleotides 1-11 and 12-22 are located on both sides of the insertion site of the soybean genome;
  • SEQ ID NO: 6 is a sequence internal to SEQ ID NO: 3 spanning the nucleotide sequence of the pDBN4003 construct DNA sequence and the t35S transcription termination sequence;
  • SEQ ID NO: 7 is a sequence internal to SEQ ID NO: 4 spanning the nucleotide sequence of the prGm17gTsf1 promoter sequence and the pDBN4003 construct DNA sequence;
  • SEQ ID NO: 8 amplifies the first primer of SEQ ID NO: 3;
  • SEQ ID NO: 9 amplifies the second primer of SEQ ID NO: 3;
  • SEQ ID NO: 10 amplifies the first primer of SEQ ID NO: 4;
  • SEQ ID NO: 11 amplifies the second primer of SEQ ID NO: 4.
  • SEQ ID NO: 12 Primer on the 5' flanking genomic sequence
  • SEQ ID NO: 13 is a primer paired with SEQ ID NO: 12 on the T-DNA;
  • SEQ ID NO: 14 a primer on the 3' flanking genomic sequence, which paired with SEQ ID NO: 12 can detect whether the transgene is homozygous or heterozygous;
  • SEQ ID NO: 16 Taqman detects primer 1 of EPSPS
  • SEQ ID NO: 17 Taqman detects primer 2 of EPSPS
  • SEQ ID NO: 18 Taqman probe 1 for detecting EPSPS
  • SEQ ID NO: 19 Taqman detects primer 3 of PAT;
  • SEQ ID NO: 20 Taqman detects primer 4 of PAT
  • SEQ ID NO: 21 Taqman detects PAT probe 2;
  • SEQ ID NO: 22 a first primer for soybean endogenous gene Ubiquitin
  • SEQ ID NO: 23 a second primer for soybean endogenous gene Ubiquitin
  • SEQ ID NO: 24 probe for EPSPS in Southern blot hybridization assay
  • SEQ ID NO: 25 probe for PAT in Southern blot hybridization assay
  • SEQ ID NO:26 Primer on T-DNA, in the same orientation as SEQ ID NO:13;
  • SEQ ID NO:27 Primer on T-DNA, opposite to SEQ ID NO: 13 for use as a flanking sequence
  • SEQ ID NO: 28 Primer on T-DNA, opposite to SEQ ID NO: 13, used to obtain flanking sequence;
  • SEQ ID NO:29 Primer on T-DNA, in the same orientation as SEQ ID NO:15;
  • SEQ ID NO: 31 Primer on T-DNA, opposite to SEQ ID NO: 15, used to obtain flanking sequences.
  • FIG. 1 is a schematic view showing the structure of a nucleic acid sequence for detecting a herbicide-tolerant soybean plant DBN9008 and a method for detecting the same, and a structure of a transgenic insertion sequence of a soybean genome;
  • FIG. 2 is a schematic view showing the structure of a recombinant expression vector pDBN4003 for detecting a nucleic acid sequence of a herbicide-tolerant soybean plant DBN9008 and a detection method thereof.
  • the recombinant expression vector pDBN4003 (shown in Figure 2) was constructed using standard gene cloning techniques.
  • the vector pDBN4003 comprises two tandem transgene expression cassettes, the first expression cassette being operably linked to the coding sequence of the Arabidopsis EPSPS chloroplast transit peptide by the soybean Tsf1 gene (encoding elongation factor EF-1 ⁇ ) promoter (prGm17gTsf1) (spAtCTP2) operably linked to the glucosinolate from the glyphosate-tolerant 5-enol-pyruvylshikimate-3-phosphate synthase (cEPSPS) of the Agrobacterium CP4 strain
  • the 3' untranslated sequence (tPse9) of the sugar-1,5-bisphosphate carboxylase is composed;
  • the second expression cassette is composed of a tandem repeat of the cauliflower mosaic virus 35S promoter (pr35S) containing an enhancer region.
  • cPAT glufosinate-resistant phosphinothricin N-acetyltransferase
  • t35S cauliflower mosaic virus 35S terminator
  • the vector pDBN4003 was transformed into Agrobacterium LBA4404 (Invitrgen, Chicago, USA; Cat. No: 18313-015) by liquid nitrogen method, and 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) Transformed cells are screened for selectable markers.
  • Agrobacterium LBA4404 Invitrgen, Chicago, USA; Cat. No: 18313-015
  • EPSPS 5-enolpyruvylshikimate-3-phosphate synthase
  • Transformation was carried out by a conventional Agrobacterium infection method, and aseptically cultured soybean cotyledonary node tissue was co-cultured with Agrobacterium described in Example 1.1 to transfer the T-DNA in the constructed recombinant expression vector pDBN4003 to In the soybean genome, to generate the transgenic soybean event DBN9008.
  • soybean germination medium B5 salt 3.1 g/L, B5 vitamin, sucrose 20 g/L, agar 8 g/L, pH 5.6.
  • the seeds were inoculated on a germination medium and cultured under the following conditions: temperature 25 ⁇ 1 ° C; photoperiod (light/dark) was 16/8 h.
  • photoperiod light/dark
  • the soybean sterile seedlings of the fresh green cotyledon nodes were taken, the hypocotyls were cut at 3-4 mm below the cotyledonary nodes, and the cotyledons were cut longitudinally to remove the top buds, lateral buds and seed roots.
  • the wound is treated at the cotyledonary node with the back of the scalpel, and the wounded cotyledonary node tissue is contacted with the Agrobacterium suspension, wherein the Agrobacterium can transfer the nucleotide sequence of the EPSPS gene and the nucleotide sequence of the PAT gene to the wounded Cotyledonary node tissue (step 1: Infection step).
  • the cotyledonary node tissue is in solid medium after the infection step (MS salt 4.3 g/L, B5 vitamin, sucrose 20 g/L, glucose 10 g/L, 2 - Morpholine ethanesulfonic acid (MES) 4g/L, zeatin 2mg/L, agar 8g/L, pH 5.6).
  • MS salt 4.3 g/L
  • B5 vitamin sucrose 20 g/L
  • glucose 10 g/L glucose 10 g/L
  • zeatin 2mg/L agar 8g/L, pH 5.6
  • the medium was restored (B5 salt 3.1 g/L, B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, zeatin (ZT) 2 mg/L, agar 8 g/ L, cephalosporin 150 mg / L, glutamic acid 100 mg / L, aspartic acid 100 mg / L, pH 5.6) at least one antibiotic known to inhibit the growth of Agrobacterium (cephalosporin 150-250mg / L ), the selection agent of the plant transformant is not added (step 3: recovery step).
  • B5 salt 3.1 g/L B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, zeatin (ZT) 2 mg/L, agar 8 g/ L, cephalosporin 150 mg / L, glutamic acid 100 mg / L, aspartic acid 100 mg / L, pH
  • the leaf-regenerated tissue blocks are cultured on a solid medium with antibiotics but no selective agent to eliminate Agrobacterium and provide a recovery period for the infected cells.
  • the cotyledonary node regenerated tissue blocks are containing a selection agent (glyphosate).
  • the cultured transformation callus is cultured and selected (step 4: selection step).
  • the cotyledonary node regenerated tissue block is selected in a solid medium with selective agent (B5 salt 3.1 g/L, B5 vitamin) 2-morpholineethanesulfonic acid (MES) 1g/L, sucrose 30g/L, 6-benzyl adenine (6-BAP) 1mg/L, agar 8g/L, cephalosporin 150mg/L, glutamic acid 100 mg/L, aspartic acid 100 mg/L, glyphosate isopropylamine salt 10 mg/L, pH 5.6), the transformed cells can continue to grow.
  • selective agent B5 salt 3.1 g/L, B5 vitamin
  • MES 2-morpholineethanesulfonic acid
  • 6-BAP 6-benzyl adenine
  • the transformed cells regenerate the plants (Step 5: Regeneration) Step), preferably, the cotyledonary node-regenerated tissue pieces grown on the medium containing the selection agent are cultured on a solid medium (B5 differentiation medium and B5 rooting medium) to regenerate the plants.
  • a solid medium B5 differentiation medium and B5 rooting medium
  • the selected resistant tissue blocks were transferred to the B5 differentiation medium (B5 salt 3.1 g/L, B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, zeatin (ZT)) 1mg/L, agar 8g/L, cephalosporin 150mg/L, glutamic acid 50mg/L, aspartic acid 50mg/L, gibberellin 1mg/L, auxin 1mg/L, glyphosate isopropylamine salt At 10 mg/L, pH 5.6), the culture was differentiated at 25 °C.
  • B5 differentiation medium B5 salt 3.1 g/L, B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, zeatin (ZT)
  • the differentiated seedlings were transferred to the B5 rooting medium (B5 salt 3.1 g/L, B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, agar 8 g/L, cephalosporin) 150 mg/L, indole-3-butyric acid (IBA) 1 mg/L), cultured in rooting culture at 25 ° C to a height of about 10 cm, and transferred to a greenhouse for cultivation to firmness. In the greenhouse, the cells were cultured at 26 ° C for 16 hours and then at 20 ° C for 8 hours.
  • B5 rooting medium B5 salt 3.1 g/L, B5 vitamin, 2-morpholine ethanesulfonic acid (MES) 1 g/L, sucrose 30 g/L, agar 8 g/L, cephalosporin
  • IBA indole-3-butyric acid
  • the regenerated transgenic soybean plants were tested for the presence of EPSPS and PAT genes by TaqManTM analysis (see second example) and characterize the copy number of the glyphosate-tolerant and glufosinate-tolerant lines.
  • the event DBN9008 was selected to be excellent with single copy transgene, good glyphosate herbicide tolerance, glufosinate herbicide tolerance and agronomic traits (see sixth example).
  • Approximately 100 mg of the leaves of the transgenic soybean event DBN9008 were taken as samples, and the genomic DNA was extracted using a plant DNA extraction kit (DNeasy Plant Maxi Kit, Qiagen), and the copy number of the EPSPS gene and the PAT gene was detected by Taqman probe fluorescent quantitative PCR.
  • the wild type soybean plants were used as a control, and the detection and analysis were carried out according to the above method. The experiment was set to repeat 3 times and averaged.
  • Step 11 Take 100 mg of the leaves of the transgenic soybean event DBN9008, and homogenize it with liquid nitrogen in a mortar, and take 3 replicates for each sample;
  • Step 12 Extract the genomic DNA of the above sample using Qiagen's DNeasy Plant Mini Kit, and refer to the product manual for the specific method;
  • Step 13 Determine the genomic DNA concentration of the above sample using NanoDrop 2000 (Thermo Scientific).
  • Step 14 adjusting the genomic DNA concentration of the above sample to the same concentration value, the concentration value ranges from 80 to 100 ng / ⁇ l;
  • Step 15 The Taqman probe real-time PCR method is used to identify the copy number of the sample, and the sample with the known copy number is used as a standard, and the sample of the wild type soybean plant is used as a control, and each sample is repeated for 3 times, and the average is taken. Value; the fluorescent PCR primers and probe sequences are:
  • Primer 1 TTGGGGCACACCTTACCGTTGAG is shown in SEQ ID NO: 16 in the Sequence Listing;
  • Primer 2 GCTTACCACGACCTTCAAGACG is shown in SEQ ID NO: 17 in the Sequence Listing;
  • Probe 2 CAGCTGATATGGCCGCGGTTTGTG is shown in SEQ ID NO: 21 in the Sequence Listing;
  • the PCR reaction system is:
  • the 50 ⁇ primer/probe mixture contained 45 ⁇ L of each primer at a concentration of 1 mM, 50 ⁇ L of a probe at a concentration of 100 ⁇ M and 860 ⁇ l of L1 ⁇ TE buffer, and stored at 4° C. in an amber test tube.
  • the PCR reaction conditions are:
  • Hot DNA extraction CTAB buffer (20g/L CTAB, 1.4M NaCl, 100mM Tris-HCl, 20mM EDTA (ethylenediaminetetraacetic acid), adjusted to pH 8.0 with NaOH), fully mixed, and pumped at a temperature of 65 ° C Lifting for 90 minutes; adding 0.5 volume of phenol, 0.5 volume of chloroform, mixing by inversion; centrifugation for 10 minutes at 12000 rpm (revolutions per minute); aspirate the supernatant, add 2 volumes of absolute ethanol, and gently shake the centrifuge tube.
  • CTAB buffer 20g/L CTAB, 1.4M NaCl, 100mM Tris-HCl, 20mM EDTA (ethylenediaminetetraacetic acid), adjusted to pH 8.0 with NaOH
  • the extracted DNA sample is subjected to concentration measurement such that the concentration of the sample to be tested is between 80 and 100 ng/ ⁇ L.
  • Genomic DNA was digested with the selected restriction enzymes PsiI, DraI and TaqI (5' end analysis) and AflII, TaqI and PsiI (3' end analysis), respectively. 26.5 ⁇ L of genomic DNA, 0.5 ⁇ L of the above-selected restriction enzyme, and 3 ⁇ L of the restriction enzyme buffer were added to each digestion system, and the enzyme was digested for 1 hour.
  • NEB T4DNA Ligase Reaction Buffer the specific formulation can be found on the NEB website or refer to https://www.neb.com/products/restriction-endonucleases, https://www.neb.com/products/ B0202-t4-dna-ligase-reaction-buffer) and 0.5 ⁇ L of T4-DNA ligase were ligated overnight at 4 °C.
  • the 5' and 3' transgene/genomic DNA were isolated by PCR amplification using a series of nested primers. Specifically, the isolated 5' transgene/genomic DNA primer combination comprises SEQ ID NO: 13, SEQ ID NO: 26.
  • the isolated 3' transgene/genomic DNA primer combination comprises SEQ ID NO: 15, SEQ ID NO: 29 as the first primer, SEQ ID NO: 30, SEQ ID NO: 31 as the second primer, and SEQ ID NO: 15 as the sequencing primer.
  • the PCR reaction conditions are shown in Table 3.
  • the obtained amplicons were electrophoresed on a 2.0% agarose gel to separate the PCR reactions, followed by separation from the agarose matrix using a QIAquick Gel Extraction Kit (QIAquick Gel Extraction Kit, catalog #_28704, Qiagen Inc., Valencia, CA). Target segment.
  • the purified PCR product is then sequenced (eg, ABI PrismTM 377, PE Biosystems, Foster City, CA) and analyzed (eg, DNASTAR sequence analysis software, DNASTAR Inc., Madison, WI).
  • the 5' and 3' flanking sequences and junction sequences were confirmed using standard PCR methods.
  • the 5' flanking sequence and the contact sequence can be confirmed using SEQ ID NO: 8 or SEQ ID NO: 12 in combination with SEQ ID NO: 9, SEQ ID NO: 13, or SEQ ID NO: 26.
  • the 3' flanking sequence and the contact sequence can be confirmed using SEQ ID NO: 11 or SEQ ID NO: 14, in combination with SEQ ID NO: 10, SEQ ID NO: 15 or SEQ ID NO: 29.
  • the PCR reaction system and amplification conditions are shown in Tables 2 and 3. Those skilled in the art will appreciate that other primer sequences can also be used to confirm flanking sequences and junction sequences.
  • DNA sequencing of PCR products provides DNA that can be used to design other DNA molecules that serve as primers and probes for the identification of soybean plants or seeds derived from the transgenic soybean event DBN9008.
  • soybean genomic sequence at position 1-104 of SEQ ID NO: 5 is flanking the right border of the transgenic soybean event DBN9008 insertion sequence (5' flanking sequence), at nucleotide 5815 of SEQ ID NO: The -6883 position is shown in the left border flanking (3' flanking sequence) of the soybean genome sequence inserted in the transgenic soybean event DBN9008.
  • the 5' junction sequence is set forth in SEQ ID NO: 1
  • the 3' junction sequence is set forth in SEQ ID NO: 2.
  • the ligation sequence is a relatively short polynucleotide molecule that is a new DNA sequence that is diagnostic for the DNA of the transgenic soybean event DBN9008 when detected in a polynucleic acid detection assay.
  • the junction sequence in SEQ ID NO: 1 and SEQ ID NO: 2 is the insertion site of the transgene fragment in the transgenic soybean event DBN9008 and the 11 polynucleotides on each side of the soybean genomic DNA.
  • Longer or shorter polynucleotide junction sequences can be selected from SEQ ID NO: 3 or SEQ ID NO: 4.
  • the junction sequence (5' junction region SEQ ID NO: 1, and 3' junction region SEQ ID NO: 2) is useful as a DNA probe or as a DNA primer molecule in a DNA detection method.
  • the ligating sequences SEQ ID NO: 6 and SEQ ID NO: 7 are also novel DNA sequences in the transgenic soybean event DBN9008, which can also be used as a DNA probe or as a DNA primer molecule to detect the presence of the transgenic soybean event DBN9008 DNA.
  • the SEQ ID NO: 6 (positions 221 to 378 of the nucleotide of SEQ ID NO: 3) spans the pDBN4003 construct DNA sequence and the t35S terminator sequence
  • SEQ ID NO: 7 (SEQ ID NO: 4) Nucleotide positions 1-224) span the prGm17gTsf1 promoter sequence and the pDBN4003 construct DNA sequence.
  • an amplicon is produced by using at least one primer from SEQ ID NO: 3 or SEQ ID NO: 4, which is used in a PCR method to generate a diagnostic amplicon of the transgenic soybean event DBN9008.
  • a PCR product is produced from the 5' end of the transgene insert, which is part of the genomic DNA flanked by the 5' end of the T-DNA insert in the genome of the plant material derived from the transgenic soybean event DBN9008.
  • This PCR product comprises SEQ ID NO:3.
  • primer 5 SEQ ID NO: 8
  • primer 6 SEQ ID located in the transgene t35S transcription termination sequence
  • a PCR product was generated from the 3' end of the transgene insert, which contained a portion of the genomic DNA flanking the 3' end of the T-DNA insert in the genome of the plant material derived from the transgenic soybean event DBN9008.
  • This PCR product comprises SEQ ID NO:4.
  • primer 8 SEQ ID NO: 11
  • primer 7 SEQ ID NO: 10
  • the DNA amplification conditions described in Tables 2 and 3 can be used in the above PCR zygosity assay to generate a diagnostic amplicon of the transgenic soybean event DBN9008. Detection of the amplicon can be carried out by using Stratagene Robocycler, MJ Engine, Perkin-Elmer 9700 or Eppendorf Mastercycler Gradien thermal cycler, or the like, or by methods and equipment known to those skilled in the art.
  • thermocycler Mix gently. If there is no cap on the thermocycler, add 1-2 drops of mineral oil above each reaction.
  • Table 3 Using the above cycling parameters (Table 3) in Stratagene Robocycler (Stratagene, La Jolla, CA), MJ Engine (MJ R-Biorad, Hercules, CA), Perkin-Elmer 9700 (Perkin Elmer, Boston, MA) or Eppendorf Mastercycler Gradient (PCR was performed on a thermocycler on Eppendorf, Hamburg, Germany. The MJ Engine or Eppendorf Mastercycler Gradient thermal cycler should operate in the calculated mode.
  • the Perkin-Elmer 9700 Thermal Cycler is programmed to set the ramp speed to its maximum value.
  • primers 5 and 6 when used in the PCR reaction of the genomic DNA of the transgenic soybean event DBN9008, produced an amplification product of a 378 bp fragment, which was used in the untransformed soybean genome.
  • primers 7 and 8 SEQ ID NOS: 10 and 11 were generated when used in the PCR reaction of the transgenic soybean event DBN9008 genomic DNA.
  • the amplified product of the 432 bp fragment was not amplified when it was used in a PCR reaction of untransformed soybean genomic DNA and non-DBN9008 soybean genomic DNA.
  • PCR zygosity assays can also be used to identify homozygous or heterozygous materials derived from the transgenic soybean event DBN9008.
  • Primer 9 SEQ ID NO: 12
  • primer 10 SEQ ID NO: 13
  • primer 11 SEQ ID NO: 14
  • the DNA amplification conditions illustrated in Tables 4 and 5 can be used in the above zygosity assay to generate a diagnostic amplicon of the transgenic soybean event DBN9008.
  • the above cycling parameters (Table 5) were used at Stratagene Robocycler (Stratagene, La Jolla, CA), MJ Engine (MJ R-Biorad, Hercules, CA), Perkin-Elmer 9700 (Perkin Elmer, Boston, MA) or Eppendorf Mastercycler Gradient (PCR was performed on a thermocycler on Eppendorf, Hamburg, Germany.
  • the MJ Engine or Eppendorf Mastercycler Gradient thermal cycler should operate in the calculated mode.
  • the Perkin-Elmer 9700 Thermal Cycler is programmed to set the ramp speed to its maximum value.
  • the biological sample containing the template DNA contains DNA for diagnosing the presence of the transgenic soybean event DBN9008 in the sample.
  • the reaction will produce two different DNA amplicons from a biological sample containing DNA derived from the soybean genome, the DNA derived from the soybean genome relative to the transgenic soybean event The allele corresponding to the inserted DNA present in DBN9008 is heterozygous. These two different amplicons will correspond to the first amplicon derived from the wild-type soybean genomic locus and the second amplicon from the presence of the diagnostic transgenic soybean event DBN9008 DNA.
  • a soybean DNA sample that produces only a single amplicon corresponding to the second amplicon described for the hybrid genome can be diagnostically determined to determine the presence of the transgenic soybean event DBN9008 in the sample, and the sample is present in relation to the transgenic soybean plant DBN9008
  • the allele corresponding to the inserted DNA is produced by homozygous soybean seeds.
  • primer pair of the transgenic soybean event DBN9008 was used to generate a diagnostic amplicon for the transgenic soybean event DBN9008 genomic DNA.
  • primer pairs include, but are not limited to, primers 5 and 6 (SEQ ID NOS: 8 and 9), and primers 7 and 8 (SEQ ID NOS: 10 and 11), which are used in the DNA amplification method described.
  • primers 12 and 13 SEQ ID NOS: 22 and 23 for amplifying the soybean endogenous gene was included as an intrinsic standard for the reaction conditions.
  • DNA extraction sample analysis of the transgenic soybean event DBN9008 should include a positive tissue DNA extract control of the transgenic soybean event DBN9008, a negative DNA extract control derived from the non-transgenic soybean event DBN9008, and a non-templated soybean DNA extraction Negative control of the extract.
  • any primer pair from SEQ ID NO: 3 or SEQ ID NO: 4, or its complement can be used to generate soybeans derived from the transgenic event when they are used in a DNA amplification reaction, respectively.
  • the tissue of plant DBN9008 is a diagnostic amplicon comprising SEQ ID NO: 1 or SEQ ID NO: 2.
  • the DNA amplification conditions illustrated in Table 2 - Table 5 can be used to generate a diagnostic amplicon of the transgenic soybean event DBN9008 using a suitable primer pair.
  • An extract derived from a soybean plant or seed DNA containing the transgenic soybean event DBN9008, or a product derived from the transgenic soybean event DBN9008, which is a diagnostic amplicon for the transgenic soybean event DBN9008 when tested in a DNA amplification method. Can be used as a template for amplification to determine the presence of the transgenic soybean event DBN9008.
  • Southern blot analysis was performed using T4, T5 and T6 generation homozygous transformation events.
  • Plant tissue was ground in liquid nitrogen using a mortar and pestle. Resuspend 4-5g in 20 mL CTAB Lysis Buffer (100 mM Tris pH 8.0, 20 mM EDTA pH 8.0, 1.4 M NaCl, 0.2% v/v ⁇ -mercaptoethanol, 2% w/v polyethylene-pyrrolidone) Plant tissue and incubated for 60 minutes at 65 °C. During the incubation period, mix the samples upside down every 10 minutes.
  • CTAB Lysis Buffer 100 mM Tris pH 8.0, 20 mM EDTA pH 8.0, 1.4 M NaCl, 0.2% v/v ⁇ -mercaptoethanol, 2% w/v polyethylene-pyrrolidone
  • RNAase A RNAase A
  • a concentration of 30 mg/mL for 30 minutes at a temperature of 37 ° C centrifuged at 4000 rpm for 5 minutes, and then at 0.1 volume of 3 M sodium acetate and 2 volumes of absolute ethanol.
  • the DNA was precipitated by centrifugation at 14,000 rpm for 10 minutes. After discarding the supernatant, the precipitate was washed with 70% (v/v) of 1 mL of ethanol, dried, and redissolved in 1 mL of TE buffer.
  • Ultra-micro spectrophotometer Nano-micro spectrophotometer (NanoDrop 2000, Thermo Scientific) The genomic DNA concentration of the above samples was determined.
  • Genomic DNA was digested each time in a 100 ⁇ L reaction system. Genomic DNA was digested with restriction endonucleases EcoRI and EcoRV, respectively, using partial sequences of EPSPS and PAT on T-DNA as probes. For each enzyme, the digest was incubated overnight at the appropriate temperature. The sample was rotated using a vacuum centrifugal concentrator (speed vacuum, Thermo Scientific) to reduce the volume to 20 ⁇ L.
  • Bromophenol blue loading dye was added to each sample derived from this Example 4.2, and each sample was applied to a 0.7% agarose gel containing ethidium bromide in TAE running buffer (40 mM Tris). Electrophoresis was carried out in acetic acid, 2 mM EDTA, pH 8.0, and the gel was electrophoresed overnight at 20 volts.
  • the gels were treated with denaturing solution (1.5 M NaCl, 0.5 M NaOH) and neutralizing solution (1.5 M NaCl, 0.5 M Tris, pH 7.2) for 30 minutes each.
  • Denaturing solution 1.5 M NaCl, 0.5 M NaOH
  • neutralizing solution 1.5 M NaCl, 0.5 M Tris, pH 7.2
  • Suitable DNA sequences were amplified by PCR for probe preparation.
  • the DNA probe is SEQ ID NO: 24 and SEQ ID NO: 25, or is homologous or complementary to the above sequence.
  • DIG labeling, Southern blot hybridization, and signal detection of probes were performed using the DNA Highly Efficient Labeling and Detection Kit II (DIG High Prime DNA Labeling and Detection Starter Kit II kit, Roche, Cat. No. 11585614910).
  • the specific method refers to its product manual.
  • Two control samples are included on each Southern: (1) DNA from a negative (untransformed) segregant used to identify any endogenous soybean sequence that can hybridize to a component-specific probe; (2) based on The probe length was equivalent to a copy number of Hind III-digested pDBN4003 plasmid, which served as a positive control for hybridization and was used to demonstrate the sensitivity of the assay.
  • soybean plant DBN9008 contains a single copy of the EPSPS and PAT genes.
  • EPSPS probe EcoR I and EcoR V were digested to generate a single band of approximately 4 kb and 8.5 kb, respectively; using the PAT probe, EcoR I and EcoR V were digested to generate a single band of approximately 6 kb and 9 kb, respectively. . This indicates that one copy of each of EPSPS and PAT is present in the soybean transformation event DBN9008.
  • the expression range of EPSPS and PAT protein in the transgenic soybean event DBN9008 can be detected by ELISA.
  • the ELISA (Enzyme Linked Immunosorbent Assay) kit (ENVIRLOGIX, EPSPS kit and PAT kit) was used to detect the ratio of protein (EPSPS protein and PAT protein) to fresh weight of the sample.
  • Product Manual At the same time, wild type soybean plant leaves (non-transgenic, NGM) were used as a control, and detection and analysis were carried out according to the above method, and each plant was repeated 6 times.
  • the experimental results of the protein (EPSPS protein and PAT protein) content of the transgenic soybean event DBN9008 are shown in Table 6.
  • the average expression of EPSPS protein in fresh leaves of transgenic soybean event DBN9008 and wild-type soybean plants accounted for 210.6 and 0 of the fresh leaf weight of fresh leaves, respectively; fresh leaves of transgenic soybean event DBN9008 and wild type soybean plants were measured.
  • the ratio of the average expression level of PAT protein to the fresh weight of leaves ( ⁇ g/g) was 320.2 and 0, respectively.
  • the transgenic soybean event DBN9008 was treated as follows: 1) no spraying, artificially controlling grass; 2) spraying at the V3 leaf stage at a dose of 1680 g ae/ha (ae/ha means "active ingredient equivalent acid per hectare") Roundup herbicide, then spray the Roundup herbicide at the same dose in the R2 phase (flowering period); 3) Spray at the V3 leaf stage at a dose of 800g ai/ha (ai/ha means “active ingredient per hectare”) Try the herbicide, then spray again to the herbicide at the same dose in the V6 phase; 4) spray the herbicide at the V3 leaf stage at 800g ai/ha, then spray at 1680g ae/ha in the R2 phase.
  • Nongda herbicide is
  • the symptoms of the phytotoxicity were investigated 1 week and 2 weeks after the administration, and the soybean yield of the plot was measured at the time of harvest.
  • the classification of phytotoxicity symptoms is shown in Table 7.
  • the rate of damage to the agent includes glyphosate damage rate and glufosinate damage rate.
  • the herbicide victimization rate is determined based on the results of the investigation of the phytotoxicity 2 weeks after glyphosate or glufosinate treatment.
  • the soybean yield per plot is the total yield (weight) of soybean grains in the middle 3 rows of each plot. The yield difference between different treatments is measured as the percentage of yield.
  • the percentage of yield (%) spray yield / no spray Yield.
  • GM soybean event DBN9008 results in herbicide tolerance and soybean yield results such as Table 8
  • GM soybean event DBN9008 was sprayed with glyphosate herbicide (1680g ae/ha), glufosinate herbicide (800g ai/ha) and glufosinate herbicide (800g ai/ha) + glyphosate
  • the yield of the herbicide (1680g ae/ha) was slightly increased compared with the non-spray treatment, thus further indicating that the transgenic soybean event DBN9008 has good herbicide (glyphosate and glufosinate) tolerance.
  • Sex glyphosate herbicide
  • Such as agricultural products or commodities can be produced by the genetically modified soybean event DBN9008. If sufficient expression levels are detected in the agricultural product or commodity, the agricultural product or commodity is expected to contain a nucleotide sequence capable of diagnosing the presence of the genetically modified soybean event DBN9008 material in the agricultural product or commodity.
  • the food or commodity includes, but is not limited to, products from soybean plant DBN9008, such as soy cakes, flours and oils, specifically lecithin, fatty acids, glycerol, sterols, edible oils, defatted soy flakes, including skimmed and baked Soy flour, soy milk curd, tofu, soy protein concentrate, isolated soy protein, hydrolyzed vegetable protein, as-synthesized soy protein and soy protein fiber.
  • a nucleic acid detection method and/or kit based on a probe or primer pair can be developed to detect a biological sample such as SEQ ID NO: 1 or SEQ ID NO:
  • the GM soybean event DBN9008 of the present invention has good tolerance to glyphosate herbicide and glufosinate herbicide, has no effect on the yield, and the detection method can accurately and quickly identify whether the biological sample contains the transgene. DNA molecule of soybean event DBN9008.
  • the seed corresponding to the genetically modified soybean event DBN9008 was deposited on November 27, 2015 at the General Microbiology Center of the China Microbial Culture Collection Management Committee (CGMCC, Address: No. 3, No. 1 Beichen West Road, Chaoyang District, Beijing, China) Institute, Zip Code 100101), classification: Soybean (Glycine max), the deposit number is CGMCC No.11449. The deposit will be kept at the depository for 30 years.

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Abstract

L'invention concerne une séquence d'acide nucléique utilisée pour détecter la présence d'un événement de soja transgénique DBN9008 dans un échantillon biologique, un kit de test contenant ladite séquence d'acide nucléique, et un procédé de détection associé.
PCT/CN2017/079657 2016-06-18 2017-04-07 Séquence d'acide nucléique utilisée pour détecter la plant de soja tolérant aux herbicides dbn9008, et procédé de détection associé WO2017215327A1 (fr)

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CN112359123A (zh) * 2020-10-10 2021-02-12 浙江省农业科学院 转g10evo-epsps基因大豆实时荧光定量检测方法及其试剂盒
WO2021026688A1 (fr) * 2019-08-09 2021-02-18 北京大北农生物技术有限公司 Séquence d'acide nucléique pour la détection du plant de soja dbn8002 et son procédé de détection
WO2021026689A1 (fr) * 2019-08-09 2021-02-18 北京大北农生物技术有限公司 Séquence d'acide nucléique utilisée pour la détection de dbn8007 de plante de soja et son procédé de détection

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WO2023155193A1 (fr) * 2022-02-21 2023-08-24 北京大北农生物技术有限公司 Séquence d'acide nucléique pour la détection de la plante glycine max dbn8205 et son procédé de détection
CN116656869B (zh) * 2023-07-24 2023-09-22 捷康生物科技(海南)有限公司 转基因大豆事件jk1001-2及其检测方法
CN116694812B (zh) * 2023-07-25 2023-10-03 隆平生物技术(海南)有限公司 转基因大豆事件lp086-2及其检测方法
CN116694813B (zh) * 2023-07-25 2023-10-03 隆平生物技术(海南)有限公司 转基因大豆事件lp086-1及其检测方法
CN116694815B (zh) * 2023-08-01 2023-10-03 隆平生物技术(海南)有限公司 转基因大豆事件lp012-2及其检测方法
CN116694814B (zh) * 2023-08-01 2023-10-10 隆平生物技术(海南)有限公司 转基因大豆事件lp012-1及其检测方法

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WO2021026688A1 (fr) * 2019-08-09 2021-02-18 北京大北农生物技术有限公司 Séquence d'acide nucléique pour la détection du plant de soja dbn8002 et son procédé de détection
WO2021026689A1 (fr) * 2019-08-09 2021-02-18 北京大北农生物技术有限公司 Séquence d'acide nucléique utilisée pour la détection de dbn8007 de plante de soja et son procédé de détection
CN112359123A (zh) * 2020-10-10 2021-02-12 浙江省农业科学院 转g10evo-epsps基因大豆实时荧光定量检测方法及其试剂盒

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