WO2007052376A1 - 活性型areb1により植物の乾燥ストレス耐性を向上させる方法 - Google Patents
活性型areb1により植物の乾燥ストレス耐性を向上させる方法 Download PDFInfo
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- WO2007052376A1 WO2007052376A1 PCT/JP2006/305634 JP2006305634W WO2007052376A1 WO 2007052376 A1 WO2007052376 A1 WO 2007052376A1 JP 2006305634 W JP2006305634 W JP 2006305634W WO 2007052376 A1 WO2007052376 A1 WO 2007052376A1
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- environmental stress
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- 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
- C12N15/8273—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 drought, cold, salt resistance
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/415—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from plants
Definitions
- the present invention relates to an active form of protein AREB1 that regulates resistance to dry stress and a method for using the active form.
- abscisic acid has various functions in plants and is also involved in the adaptive response to environmental stress. Abscisic acid is synthesized under water-deficient conditions and plays an important role in responding to dry stress. Many genes are known that are induced by drought stress, many of which are activated by abscisic acid. ABRE (ABA—responsiveve element) is known as a promoter of genes controlled by such abscisic acid.
- AREB AREB2 and AREB3 were first reported in Arabidopsis as a protein that binds to ABRE (see Non-Patent Document 1).
- AREB1 / ABF2, AREB2 / ABF4, AREB3 / DPBF3, ABF1, ABF3 / DPBF5, ABI5 / DPBF EEL / DPBF4, DPBF2 and AT5G42910 have been reported to date (non-patented) References 1-8).
- AREB is a regulatory factor that transcribes gene expression by ABA, and is known as a factor that controls a dry / salt / low-temperature stress resistance gene. Have.
- AREB1 binds to ABRE and induces the expression of stress-responsive genes downstream of the plant, thereby imparting drought / salt / low-temperature stress responsiveness to the plant. Does not induce the expression of responsive genes.
- AREB 1 activation includes stress-induced splicing and AREB 1 protein Of phosphorylation is considered necessary,
- Non-Patent Document 1 Uno et al., Proc. Natl. Acad. Sci. USA97, 11632-11637
- Non-patent literature 5 Bensmihen et al., Plant Cel 14, 1391-1403 (2002) Non-patent literature 6 Jakoby et al., Trends plant Sci. 7, 106-111 (2002) Non-patent literature 7 Kim et al., Plant Phys iol. 130, 688-697 (2002) Non-Patent Document 8 Suzuki et al., Plant Phys iol. 132, 1664-1677 (2003) Disclosure of the Invention
- the present invention provides an active AREB1 that improves resistance to dryness / salt / low temperature stress of a plant by high expression in the plant body, and also provides resistance to drought / salt / low temperature stress of the plant using the active AREB1. It aims at providing the method of improving.
- the present inventor conducted a detailed domain analysis of AREB1 and identified that the transcription activation domain of AREB1 is the N-terminal amino acid 1-60 region. It also has a transcriptional activation domain and
- AREB1 changes to a constitutively active form when the activation control region (amino acid 65-277) between DNA binding domains is deleted.
- the target gene of AREB1 was analyzed, and it was shown that various stress resistance genes were highly expressed.
- Arabidopsis AREB2 and ABF3, which are homologous to AREB1 are genes responsive to dry / salt / cold stress via ABA signals.
- OsAREBl a homologous gene for dry / salt / cold stress responsiveness in monocotyledonous rice, as well as dicotyledonous rice plants.
- the N-terminal region identified this time is a region with extremely high homology regardless of the plant species, and creates an active AREB1.
- the method used in this study can be applied to a wide variety of plant species.
- the present invention is as follows.
- Plant environmental stress responsive transcription factor AREB1 an activated environmental stress response that lacks part or all of the activation control region and contains an N-terminal transcriptional activation domain and a DNA-binding domain Sex transcription factor AREB 1 gene.
- a plant that lacks at least one of the Q, R, S, and T regions of environmental stress-responsive transcription factors and contains a ⁇ -terminal transcriptional activation domain and a U-region that contains a DNA-binding domain
- the active environmental stress responsive transcription factor AREB1 gene including the region.
- [4] Encodes a protein consisting of an amino acid sequence in which the amino acid sequence from the 65th amino acid to the 277th amino acid is deleted in the amino acid sequence represented by SEQ ID NO: 2 [3] The active environmental stress response of [3] Transcription factor AREB 1 gene.
- An active environmental stress responsive transcription factor of [3] or [4] consisting of an amino acid sequence in which one or several amino acids have been deleted, substituted, or added in the amino acid sequence of the AREB 1 gene.
- AREB 1 gene an active environmental stress responsive transcription factor that encodes a protein having environmental stress responsive transcriptional activity.
- the active environmental stress-responsive transcription factor AREB [3] consisting of a base sequence in which the base sequence from base 312 to base 950 is deleted in the base sequence represented by SEQ ID NO: 1. 1 gene.
- Active environmental stress-responsive transcription factor of [6] DNA that can be hybridized under stringent conditions with DNA consisting of a base sequence complementary to the DNA consisting of the base sequence of the AREB 1 gene
- An active environmental stress responsive transcription factor AREB 1 gene comprising a DNA encoding a protein having a transcriptional activity responsive to environmental stress in plants.
- [1 0] A plant transformation vector comprising the gene of any one of [1] to [9].
- FIG. 1A is a diagram relating to the domain analysis of AREB1 using the Arabidopsis thaliana T87 cell protoplasts, showing the effector plasmid and reporter plasmid constructs.
- FIG. 1B is a diagram related to the domain analysis of AREB1 using protoplasts of Arabidopsis T87 cells, and shows the results of a transduction domain analysis of AREB1 with the N-terminal deleted.
- Fig. 1C is a diagram related to the domain analysis of AREB1 using protoplasts of Arabidopsis T87 cells, and shows the results of AREBIAQT and AREB1 AP / RT transactivation.
- FIG. 2A is a photograph showing the results of Northern analysis of active AREB1-expressing Arabidopsis thaliana.
- FIG. 2B is a photograph showing the growth of activated AREB1-expressing Arabidopsis thaliana in GMK medium.
- Figure 3 is a photograph showing the results of a dry stress tolerance test of active AREB1-expressing Arabidopsis thaliana.
- Figure 4A shows a phylogenetic analysis of AREB1 homologous genes in Arabidopsis and rice It is a figure which shows the relative relationship of the AREB 1 homologous gene in the dicotyledonous Arabidopsis thaliana and the monocotyledonous rice by the phylogenetic tree.
- Figure 4B is a photograph showing the gene expression profile of AEB, desiccation, salt, and water treatment of the AREB 1 homologous gene in Arabidopsis thaliana.
- Fig. 4C shows gene expression profiles of AREB 1 homologous genes in rice after drying, salting, and low-temperature treatment.
- FIG. 4D shows a comparison of the amino acid sequences of the transcriptional activation regions of the AREB 1 homologous gene in Arabidopsis and rice.
- Active environmental stress-responsive transcription which lacks part or all of the activation control region of plant environmental stress-responsive transcription factor AREB 1 and contains an N-terminal transcriptional activation domain and DNA-binding domain
- the factor AREB1 gene can be prepared by deleting the activation control region from the gene encoding plant AREB1.
- environmental stress refers to dry stress, salt stress, low temperature stress, and the like.
- plant AREB1 genes are P (about 60th amino acid from the first amino acid of AREB1 protein), Q (about 1st 16th amino acid from about 61st amino acid of AREB1 protein) , R (about 1st to about 199th amino acid from about 1 17th amino acid of AREB 1 protein), S (about 200th amino acid to about 263th amino acid from about 200th amino acid of AREB 1 protein), T (about 264th of AREB 1 protein) Can be divided into 6 regions: about 317 amino acids from amino acids of) and U (about 417 amino acids from about 318 amino acids of AREB 1 protein). Of these, the U region contains the DNA binding domain bZ IP, and the P region contains the transcriptional activation domain. The Q, R, S and T regions contain the activation control region.
- the gene of the present invention contains at least the transcriptional activation 1 "region of the cocoon region and the DNA binding domain of the U region, and a part or all of the activation control regions of the Q, R, S and T regions are deleted. However, the function of the activation control region is lost, and the gene of the present invention has the function of the transcriptional active region including the transcriptional activation domain. Examples include at least one region of Q, R, S and T described above, for example, deletions from Q to ⁇ and from R to ⁇ . In addition, it is not always necessary to delete all of each region, and a part of each region may be deleted as long as the activation control function is lost.
- Examples of the gene of the present invention include, for example, the amino acid sequence of amino acid 61 from amino acid 316 of amino acid sequence AREB1 derived from Arabidopsis thaliana represented by SEQ ID NO: 2, from amino acid 61 to amino acid 316, from amino acid 50 to 100, and from amino acid 61 to amino acid 70.
- Examples include a gene encoding a protein lacking a continuous amino acid sequence of 100, 150, 200, 250, 300 or 350 starting from the first or amino acid at position 100 to position 130.
- a protein comprising an amino acid sequence in which the amino acid sequence from any amino acid at positions 60 to 70 to any amino acid at positions 270 to 280 is deleted, 60 A protein consisting of an amino acid sequence in which the amino acid sequence from any amino acid from the 100th amino acid to any amino acid from the 260th to the 320th is deleted, 260th to 320th from any amino acid from the 100th to the 130th.
- a protein consisting of an amino acid sequence from which the amino acid sequence up to any of the amino acids is deleted, preferably a protein consisting of an amino acid sequence from which the amino acid sequence from the 65th amino acid to the 277th amino acid is deleted.
- the gene of the present invention is a base sequence of position 270 to base 420, position 300 to base 330, or position 420 of the Arabidopsis thaliana AREB1 gene represented by SEQ ID NO: 1.
- SEQ ID NO: 1 Is a gene consisting of a base sequence lacking a continuous base sequence of 300, 450, 600, 750, 900 or 1050 starting from the base to the 510th base, for example, the base sequence represented by SEQ ID NO: 1.
- a gene lacking part or all of the activation control region is known gene It can be manufactured by a method of child operation.
- PCR may be used to bind DNA encoding a transcriptional activation domain and DNA encoding a DNA binding domain (Innis et al., 1990, PCR Protocols, Academic Press, San Diego). It is also possible to link both DNAs by the reciprocal priming method (Uhlmann, 1988, Gene 71: 29-40).
- AREB1 that lacks part or all of the activation control region of plant environmental stress responsive transcription factor AREB1 and contains an N-terminal transcriptional activation domain and a DNA-binding domain is referred to as activated AREB1.
- activated AREB1 AREB1 lacking the region from Q to T is referred to as AREBI A QT.
- the gene of the present invention is a protein comprising an amino acid sequence in which one or several amino acids have been deleted, substituted, or added in the above amino acid sequence, and has a plant environmental stress-responsive transcription activity. It also includes genes that encode proteins.
- severe means 20 or less, preferably 10 or less, more preferably 5 or less, and particularly preferably 2 or 1.
- a gene comprising a DNA that can hybridize under stringent conditions with a DNA comprising a base sequence complementary to the DNA comprising the base sequence of the above gene also has an environmental stress-responsive transcriptional activity of the plant.
- the stringent condition is that the formamide concentration is 30-50%, 37-50 ° C, 6 X SSC, preferably the formamide concentration is 50%, 42 ° C, 6 X SSC. Review the conditions.
- a mutation introduction kit for example, site-directed mutagenesis
- a known method such as the Kunkel method or the Gapped duplex method or a method equivalent thereto
- Mutant-K manufactured by TAKARA
- Mutant-G manufactured by TAKARA
- LA PCR invitro Mutagenes is series kit from TAKARA.
- the plant species from which the gene of the present invention is derived is not limited, and dicotyledonous plants such as Arabidopsis thaliana
- An AREB1 orthologue gene that lacks the activation control region and contains an N-terminal transcriptional activation domain and a DNA binding domain.
- the activation control region is deleted and the N-terminal transcriptional activation Includes genes containing main and DNA binding domains.
- the region to be deleted is a region corresponding to the region to be deleted in the Arabidopsis AREB1 gene, and such a region corresponds to the AREB1 gene derived from Arabidopsis thaliana. This can be determined by aligning the orthologue gene of AREB1 derived from other species.
- Figure 4D shows the alignment of partial amino acid sequences in the transcriptional active region of Arabidopsis thaliana AREB 1 protein and rice AREB1 (OsAREB 1) protein.
- OsAREBl The base sequence of OsAREBl is shown in SEQ ID NO: 10 and the amino acid sequence of OsAREBl is shown.
- the P region is from the first methionine to the 63rd glutamic acid,
- the Q region is the 64th serine to the 126th serine
- the R region is the 127th threonine to the 192th leucine
- the S region is the 193rd phenylenolanine to the 236th serine
- the T region is the 237th asparagine to the 276
- the second glutamic acid, U region is
- the gene of the present invention is the amino acid sequence of amino acids 64 to 357 of the amino acid sequence of the OsAREBl protein derived from rice represented by SEQ ID NO: 10, 50th to 100th, 60th And a gene encoding a protein lacking a continuous amino acid sequence of 100, 150, 200, 250 or 300 starting from the 70th or 100th to 130th amino acids, for example, represented by SEQ ID NO: 2.
- a protein comprising an amino acid sequence in which the amino acid sequence from any amino acid at positions 60 to 70 to any amino acid at positions 270 to 280 in the amino acid sequence to be deleted is 60;
- Protein consisting of an amino acid sequence deleted from any amino acid from the 100th amino acid to any amino acid from 260 to 290, 260 ⁇ 290th from any amino acid from the 100th to 130th A protein consisting of an amino acid sequence from which the amino acid sequence up to any of the amino acids is deleted. Preferably, it is a protein consisting of an amino acid sequence from which the amino acid sequence at positions 64 to 276 has been deleted.
- the gene of the present invention is a base sequence of the OsAREBl gene of rice represented by SEQ ID NO: 9, from the 360th base to the 520th base, from the 390th base to the 430th base, or from the 510th position. 300 consecutive bases starting from the base to the base at position 610,
- a gene consisting of a nucleotide sequence from which any nucleotide sequence from any of the 390-420th bases to any of the 1030-1060th bases is deleted, and the 390-510th positions
- a gene consisting of a base sequence from which any base sequence from any base to any of bases from 1000 to 1090 is deleted, or any base from 510 to 600 to any base from 1000 to 90 Includes genes consisting of nucleotide sequences with missing nucleotide sequences.
- it is a gene consisting of a base sequence from which positions 406 to 1045 are deleted.
- the transcriptional activation ability of the protein of the present invention can be analyzed by using a transactivation experiment method using an Arabidopsis protoplast ⁇ system.
- AREB cDNA is ligated to pBI221 plasmid (manufactured by Cl one tech) containing CaMV35S promoter to construct an effector plasmid.
- a DNA fragment containing ABRE is ligated further upstream of the TATA promoter upstream of the ⁇ _dalcronidase (GUS) gene to construct a reporter plasmid.
- the two plasmids are then introduced into Arabidopsis protoplasts, and then GUS activity is measured. If an increase in GUS activity is observed by simultaneously expressing the AREB1 protein, it indicates that transcription is activated through the sequence of the AREB 1 protein power ABRE expressed in the protoplast.
- preparation of a protoplast and introduction of plasmid DNA into the protoplast may be performed by the method of Abel et al. [Abel, S .: Plant J. 5: 421-427 (1994)]. it can.
- the 3-glucuronidase activity was determined by the method of Jefferson et al. [Jeff erson, RA: E BO J. 83: 8447-8451 (1986)], and the luciferase activity was determined by PiCaGene Luciferase Atase Kit (Toyo-Ink). ) Can be used for measurement.
- Wild-type AREB1 does not induce the transcriptional activity of the gene downstream of ABRE unless it is in the presence of abscisic acid, but the active AREB1 of the present invention can induce the transcriptional activity of the gene downstream of ABRE even in the absence of abscisic acid.
- Transgenic plants having resistance can be produced.
- methods for introducing the gene of the present invention into a plant host include indirect introduction methods such as an agrobacterium infection method, direct introduction methods such as a particle gun method, a polyethylene glycol method, a ribosome method, and a microinjection method. Is mentioned.
- the transgenic plant of the present invention can be produced as follows.
- a recombinant vector for introduction into a plant is obtained by cleaving DNA containing the gene of the present invention with an appropriate restriction enzyme, ligating an appropriate linker as necessary, and inserting it into a cloning vector for plant cells.
- Cloning vectors include pBE2113Not, pBI21 13Not, pBI21 13, pBI 101, pBI 121, pGA482, pGAH, pBIG, and other binary vector vectors such as pLGV23Neo, pNCAT, and pM0N200. Can be used.
- the target gene is inserted between the boundary sequences (LB, RB) of the above binary vector, and this recombinant vector is amplified in E. coli.
- the amplified recombinant vector is introduced into Agrobacterium 'Tumefaciens C58, LBA4404, EHA101, C58ClRif', EHA105, etc. by freeze-thaw method, electrorevolution method, etc. Is used for transduction of plants.
- an agrobacterium for plant infection containing the gene of the present invention is prepared by a triple joining method [Nucleic Acids Research, 12: 871 1 (1984)]. can do. That is, by culturing on a medium containing rifampicillin and kanamycin by culturing a mixed culture of Escherichia coli having a plasmid containing the target gene, Escherichia coli having a helper plasmid (for example, pRK2013, etc.), and agrobacterium. It is possible to obtain a conjugated agrobacterium for plant infection.
- promoters that can be used in the present invention include 35S transcripts derived from the force reflower mosaic cherry (CaMV) [Jefferson, RA et al .: The EMBO J 6: 3901-3907 (1987)], corn ubiquitin [Chr i stensen, AH et al .: Pl ant Mol. Biol.
- nopaline synthase (NOS) gene nopaline synthase (NOS) gene
- OCT tobin synthase gene promoter and the like
- the terminator sequence includes, for example, the force reflower mosaic virus-derived nopaline synthase gene-derived terminator.
- promoters and terminators that are known to function in plants are not limited to these.
- the promoter used is a promoter responsible for the constitutive expression of the target gene (such as the CaMV35S promoter), and if this causes delayed growth or hatching in the transgenic plant, transient expression of the target gene Promoters such as rd29A gene promoter can be used.
- an intron sequence having a function of enhancing gene expression between the promoter sequence and the gene of the present invention for example, an intron of maize alcohol dehydrogenase (Adhl) [Genes & Development 1: 1] 183-1200 (1987)] can be introduced.
- an effective selectable marker gene in combination with the gene of the present invention in order to efficiently select a target transformed cell.
- the selection markers used at that time include the kanamycin resistance gene ( ⁇ ), the hygromycin phosphotransferase (htp) gene that confers resistance to the antibiotic hygromycin, and the resistance to bialaphos.
- htp hygromycin phosphotransferase
- bar phosphinothricin acetyltransferase
- the gene of the present invention and the selectable marker gene may be incorporated together into a single vector, or two types of recombinant DNAs incorporated into separate vectors.
- the host of the transformant of the present invention is not particularly limited, but is preferably a plant.
- the plant is a plant cultured cell, the whole plant of a cultivated plant, a plant organ (eg, leaf, petal, stem, root, rhizome, seed, etc.), or a plant tissue (eg epidermis, phloem, soft tissue, xylem, fiber) Any of tube bundles etc. may be used.
- Plant species are not limited, dicotyledonous plants, rice, corn Monocotyledonous plants such as shrimp and wheat can be used.
- the plant to be transformed is a dicotyledonous plant, it is preferable to introduce the gene of the present invention derived from a dicotyledonous plant such as Arabidopsis thaliana. If the plant to be transformed is a monocotyledonous plant, it will be multifactorial such as rice. It is preferable to introduce a plant-derived gene of the present invention.
- the DNA encoding the protein of the present invention can be obtained by adding the vector to the collected plant section using the agrobacterium infection method, particle gun method or polyethylene da It can be introduced by the recall method to transform plant hosts. Alternatively, a transformed plant can be produced by introducing it into the Protoplast IV by the electroporation method.
- transgenic gene plant introduced with the gene of the present invention can be obtained.
- transgenes are introduced into the genome of host plants in the same way, but there is a phenomenon called position effect ⁇ where the expression of the transgene differs depending on the location of the transgene.
- Transformants in which the transgene is expressed more strongly can be selected by assaying by the Northern method using the DNA fragment of the transgene as a probe.
- the expression level and expression site of the gene are extracted from these cells and tissues according to a conventional method, and a known RT-PCR method or Northern analysis is used. This can be done by detecting the mRNA of the introduced gene.
- the gene product of the present invention can be directly analyzed by Western analysis using an antibody against the gene product.
- a gene whose expression level is considered to be altered by the action of the transcription factor of the present invention can be identified by Northern hybridization.
- a plant grown by hydroponics is given an environmental stress for a predetermined period (for example, 1 to 2 weeks).
- Environmental stresses include drying, salt, and low temperature.
- the load of dry straw can be given by removing a plant body from hydroponics and drying it on a filter paper for 10 minutes to 24 hours.
- the salt stress load can be applied by changing to a 50 to 500 mM NaCl solution and holding for 10 minutes to 24 hours, for example.
- the low temperature stress can be applied by holding at -15 to 5 ° C for 10 minutes to 24 hours.
- the load temperature of the low temperature stress can be appropriately determined according to the plant species, the growth stage of the plant, and the like.
- RNA is prepared from a control plant that does not receive stress and a plant that receives environmental stress, it is electrophoresed, and Northern Hybridization is performed using the probe of the gene that you want to express. The pattern can be analyzed.
- the resistance of environmentally-stressed lance genie plants introduced with the gene of the present invention is that, for example, trangene plants are planted in plant pots containing soil including vermiculite and pearlite, and various environmental stresses are loaded. If you have And can be evaluated by.
- environmental stress include drying, salt, and low temperature.
- resistance to dry stress can be assessed by examining its survival without water for 2-4 weeks.
- the salt stress can be evaluated by, for example, standing at 100 to 600 mM NaCl for 1 hour to 7 days, growing at 20 to 35 ° C. for 1 to 3 weeks, and examining its survival rate.
- low-temperature stress is kept at -15 to 5 ° C for 30 minutes to 10 days, then grown at 20 to 35 ° C for 2 to 3 weeks, and the survival rate is examined. Can be evaluated.
- the transcription level of the gene of the present invention can be determined by RNA gel blot analysis, quantitative PCR, or the like.
- a probe used for RNA gel plot analysis can be prepared by a known method based on the region of 100 to 1000 bp containing the gene of the present invention and Z or a specific sequence adjacent to the gene.
- the primer used for quantitative PCR can be prepared using a known method based on the sequence of the coding region of the gene of the present invention or the region adjacent thereto.
- Plants (Arabidopsi s thaliana ecotype Columbia) are exposed to light in the light period of 16 hours / dark period of 8 hours (40 ⁇ ⁇ ⁇ ⁇ photons / m 2 / s) in Osakabe et al. (2005, Plant Cel 17, 17, 1). 105-1 119) and grown on GM agar for 2-3 weeks (2005, Plant Cell
- T87 cultured cells of Arabidopsis thaliana were maintained and managed according to the method of Satoh et al. (2004, Plant Cell Physiol. 45, 309-317).
- the Arabidopsis AREB1 T-DNA insertion mutant (SALK_002984; Col-0 ecotype) Obtained from the Arabidopsis Biological Resource Center, Columbus, Oklahoma, USA. Information on this T-DNA insertion mutant can be found at http: // ⁇ signal, salk at the Balk Institute Genomic Analysis Laboratory in Lifonia, USA. obtained from edu).
- the T-DNA insertion site into the AREB1 gene is determined by T-DNA left border primer 5'-GCGTGGACCGCTTGCTGCAACT-3 '(SEQ ID NO: 3) and AREB1-specific primer 5'-TCAAGCTCCACGGTGTAAGCC-3' ( This was confirmed by PCR using SEQ ID NO: 4).
- an analysis using RT-PCR was performed according to the method of Ito and Shinozaki (2002, Plant Cell Physiol. 3, 1285-1292), and it was confirmed that the AREB1 gene was not expressed in the areblT-DNA insertion mutant. .
- RNA genomic blot analysis were prepared according to the method of Maruyama et al. (2004, Plant J. 38, 982-993).
- Transient expression analysis using protoplasts derived from Arabidopsis T87 cells was performed by Fujita et al. (2004, Plant J. 39, 863-876) and Satoh et al. (2004, Plant Cell Physiol. 45, 309-317). A method with some modifications was used. Protoplast isolation and gene transfer were all performed at room temperature (25-28 ° C). The protoplasts into which the gene had been introduced were allowed to stand at 22 ° C for 16-20 hours.
- Enzyme solution (0.4 M mannitol, 1.5% (w / v) eel lulase Onozuka -10 (Yakult, Tokyo, Japan), 0.3% (w / v) macerozyme R-10 (Yakult), 0.1% (w / v) bovine serum albumin, 10 mM CaC ⁇ ,
- a DNA fragment containing part or all of the EB1 cDNA is amplified by PCR and cloned into the Notl site of the expression vector pBI35SQ (Abe et al., 1997, Plant Cell 9, 1859-1868). With a bZIPDNA binding domain Were used for transient expression analysis experiments.
- self-binding ligase reaction was performed after partial cleavage with EcoT14I.
- the resulting PBI35S Q-AREB1 ⁇ QT is a plasmid with an internal deletion (amino acid residues 65-277) spanning the Q to T region.
- Two DNA fragments containing part of the AREBl cDNA were generated by PCR using the following two sets of primers: forward primer A, 5'-GGGGCGGCCGCATGACACAAGCCATGGCTAGTG-3 '( ⁇ ⁇ ' J number 5); reverse primer A, 5 '-GCAGAAGCACCTTGACTTCCCCCTACTCCAC-3' ( ⁇ ⁇ ⁇ IJ number 6); forward prime B, 5 '-GTAGGGGGAAGTCAAGGTGCTTCTGCTGC-3' (layout IJ number 7); (SEQ ID NO: 8).
- the resulting fragments A and B were mixed in a PCR tube, denatured at 94 ° C for 10 minutes, annealed, and then subjected to a polymerase reaction at 72 ° C for 3 minutes.
- the DNA fragment amplified with forward primer A and reverse primer B was introduced into pBI35S ⁇ .
- the resulting pBI35S Q-AREB1 ⁇ ⁇ / RT is a plasmid with two internal deletions (amino acid residues 1-60 and 117-277).
- Expression plasmids (p35S-562) and GAL4-GUS reporter plasmids (pGUS-558) with GAL4DNA binding domains bound to GAL4-activated domains were transferred from Prof. Tsutsuho Hattori (Nagoya University, Japan). Things were used.
- the expression plasmid having the GAL4 binding domain used in the transient expression analysis experiment was prepared by cloning a PCR fragment containing a part of the AREBl cDNA into the BamHI / SacI site of the expression vector p35S-562.
- pBE21 13Not-AREB1 ⁇ QT was prepared by amplifying the coding region of AREB1 ⁇ 0 ⁇ by PCR using primers with Xbal and BamHI linkers and introducing it into the Xbal / BamHI site of pBE2113Not in the sense direction.
- the transformation vectors pBE2113Not-AREB1 and pBE2113Not_AREBl ⁇ QT were used by aspiration infiltration method using C58 strain of Agrobacterium tumefaciens (Osakabe et al., 2005 , Plant Cell 17, 1105-1119) in Arabidopsis (Columbia).
- the drought tolerance test was carried out using the method of Sakamoto et al. (2004, Plant Physiol. 136, 2734-2746) with some modifications.
- the plants were grown under the conditions of lighting at 16 hours in the light period and 8 hours in the dark period (50 soils 10 / mol photons / m 2 / s), 22 soils 1 ° C, relative humidity 35, 5%. . Dry stress was applied by stopping the water supply to these plants for 12 days.
- Plants grown in 2-3 weeks after seeding on GM agar were used for the survival test of plants in a rapidly dry state. These plants were carefully wiped from the agar medium and transferred to a Petri dish (with the lid removed). Then, it was dried for a certain time, and water supply was performed after the drying process was completed. Survival test under acute drought conditions, was carried out under the conditions of 9 Sat l / mol photons / s / m 2 at illumination conditions under 25 Sat 2 ° C (relative humidity 20% soil 10%). After re-watering, move the whole Petri dish to the plant culture room and leave it at 22 ⁇ 2 ° C under continuous light (50 soil 5 imol photons / s / m 2 ) for 1 to 3 days.
- the inventor showed that in Arabidopsis protoplasts, the AREB1 protein activated transcription of the RD29B promoter-GUS fusion gene (RD29B-GUS) (Uno et al., 2000, Proc. Natl. Acad. Sci. USA 97, 11632-11637).
- RD29B-GUS RD29B promoter-GUS fusion gene
- the present inventor has developed a plasmid that constitutively expresses a defective AREB1 having a deletion at the N-terminus with the 35S promoter of cauliflower mosaic virus. It was fabricated (Fig. 1).
- This reporter plasmid has a sequence in which five 77 base pairs containing two ABREs in the RD29B promoter are arranged in series and connected to the GUS reporter gene ( Figure 1A).
- Figure 1A shows the effector and reporter plasmid constructs.
- a 77-bp ABRE sequence which is the RD29B promoter, was repeated 5 times upstream of the GUS gene.
- the promoter is -51RD29Biminima lTATA Promoter 1 ⁇ -Connected upstream of the GUS construct.
- Nos-T is a nopaline synthase terminator.
- the effector plasmid one obtained by inserting the full length of AREB1 or a part containing the bZIP DNA binding domain downstream of the CaMV35S-TMV ⁇ sequence was used. These two plasmids were simultaneously introduced into Arabidopsis thaliana T87 cell protoplasts.
- the AREB1 protein synthesized in the protoplast binds to the ABRE sequence of the reporter plasmid and induces transcription of the downstream GUS gene.
- the transcription-inducing activity of the AREB1 protein can be determined by measuring the activity of the GUS protein.
- Figure 1B shows the results of a transactivation domain analysis of AREB1 with the N-terminal deleted.
- the protoplasts were simultaneously transfected with the RD29B-GUS reporter construct and the effector construct ⁇ .
- the vector is pBI-35S Q. Relative activity is expressed in fold relative to pBI-221-35S Q control.
- the numbers above Figure 1B indicate the amino acid numbers.
- P, Q, R, S, T, and U represent partial regions of AREB1 cDNA, and black portions of P, Q, R, and U regions represent conserved regions.
- AREB1 The full-length AREB1 protein showed a marked increase in GUS activity in the presence of 50 ⁇ M abscisic acid (ABA), indicating that AREB1 functions to activate transcriptional induction of AREB1.
- ABA abscisic acid
- the present inventor further investigated whether a mutant protein having the AREB1 P region and the binding domain activates transcription of the RD29B-GUS reporter gene in the absence of external ABA.
- expression plasmids we prepared AREBI A QT and AREB1 ⁇ P / RT, which had the bZIP DNA binding domain of AREB1 and the P or Q region, respectively (Fig. 1C).
- Figure 1
- AREB1 AP / RT and other AREB1 mutants lacking the N-terminus had significantly reduced transcriptional activation ability compared to vector control in the presence of ABA.
- the decrease in transcriptional activation ability seen in these mutants is due to the preferential binding of AREB1 AP / RT and AREB1 mutants lacking the N-terminus to the ABRE motif in the reporter plasmid. This is thought to be due to the fact that the ABA-inducible endogenous transcription factor inherent in plant cells prevented the binding to the ABRE motif (Fig. 1B and Fig. 1C).
- the deletion mutant in the P region hardly suppressed the activation of the reporter gene in the presence of ABA. This may be because the sequence of the deletion mutant in the P region has some specific effects.
- the present inventor has so far described two AREB1 proteins in the RD29B promoter.
- a transformed plant was prepared by expressing QT cDNA with the cauliflower mosaic virus 35S promoter.
- the expression of the transgene ABREI AQT and the downstream gene RD29B was analyzed without any stress treatment.
- a line in which no ABA was added externally in all transformation lines examined As a result, the accumulation levels of ABREI A QT and RD29B increased.
- Eight lines with high expression levels of ABRE1 A QT were selected for phenotypic analysis.
- the phenotype of these 8 lines was the same, so different lines were sometimes used depending on the experiment.
- Figure 2 shows the results of wild-type, vector control RNA gel plot analysis. In the experiment of Fig.
- AREB 1 ⁇ ⁇ active AREB 1
- AREB 1 ⁇ ⁇ active AREB 1
- ⁇ ⁇ active AREB 1
- FIG. 2A shows the results of Northern analysis. Each lane contains 10 g of total RNA. The bottom row is a control stained with ethidium bromide.
- Northern analysis confirmed the expression of the downstream gene RD29B, which has an ABRE sequence in the promoter region only in the presence of 50 ⁇ M ABA in wild type (WT) and vector control plants (vector).
- ABREI A QT overexpressed in plants activated transcription of RD29B, a downstream gene, in the absence of external ABA. From this result, ABRE1 A QT is a constitutively active form of ABRE1 in the whole plant, and the P region at the N-terminus of ABRE1 functions as a transcriptional activation domain in the plant as well as Protoplus ⁇ . It was shown that
- Fig. 2B shows the growth in GMK medium containing 1% sucrose in the photograph 3 weeks after seeding.
- 35S-ABRE1 A QT plants were slightly smaller than the wild type, but the 35S-ABRE1 plants showed a phenotype similar to the wild type for growth.
- Microarray analysis was performed using activated AREB1-expressing Arabidopsis thaliana (35S-AREBI A QT).
- Agilent's Arabidopsis 2 Oligomicroarray which is capable of examining the expression profile of more than 85% of Arabidopsis genes, was used.
- 8 genes were expressed more than 4 times higher than the vector control plants (Table 1).
- Four of the eight downstream genes were LEA protein genes involved in water stress resistance, and the remaining four were signal control-related genes. These downstream genes were both ABA and a drought-inducible gene, and two or more ABRE sequences necessary for the binding of AREB1 protein were present in the promoter region.
- Fig. 4 shows a phylogenetic tree showing the relationship between AREB1 homologous genes in dicotyledonous Arabidopsis and monocotyledonous rice.
- Figure 4B shows the results in Arabidopsis
- FIG. 4C shows the gene expression profile of AREB1 homologous genes in rice during drying, salt and cold treatment. In the experiment, we used plants grown for 2 weeks after sowing and showed gene expression by microarray method. The expression level is the control plant It is shown by the magnification when. Numbers indicate processing time.
- FIG. 4D shows a comparison of the amino acid sequences of the transcriptional activation regions of the AREB1 homologous gene in Arabidopsis thaliana and rice. Industrial applicability
- the plant of the present invention lacks the activation control region of the environmental stress-responsive transcription factor AREB1, such as dry stress, salt stress, and low-temperature stress, and has an N-terminal transcriptional activation domain and DNA-binding domain. Introducing the over-expressed AREB1 gene, an active environmental stress-responsive transcription factor, including plants, can improve the drought / salt / cold tolerance of plants.
- AREB1 environmental stress-responsive transcription factor
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US12/084,346 US20090089899A1 (en) | 2005-11-01 | 2006-03-15 | Method for Enhancing Drought Stress Tolerance in Plants by Active AREB1 |
CA002622556A CA2622556A1 (en) | 2005-11-01 | 2006-03-15 | Method for enhancing drought stress tolerance in plants by active areb1 |
BRPI0618134-1A BRPI0618134A2 (pt) | 2005-11-01 | 2006-03-15 | métodos para o aumento da toleráncia ao estresse à seca em plantas por areb1 ativo |
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JP2005318871A JP2007124925A (ja) | 2005-11-01 | 2005-11-01 | 活性型areb1により植物の乾燥ストレス耐性を向上させる方法 |
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DE112008002435T5 (de) | 2007-09-18 | 2010-07-22 | Basf Plant Science Gmbh | Pflanzen mit erhöhtem Ertrag |
US8809059B2 (en) | 2007-09-21 | 2014-08-19 | Basf Plant Science Gmbh | Plants with increased yield |
CN112521467A (zh) * | 2019-09-17 | 2021-03-19 | 中国科学技术大学 | 一种与植物抗逆性相关基因agl103及其编码蛋白与应用 |
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KR101175102B1 (ko) | 2010-05-03 | 2012-08-21 | 경희대학교 산학협력단 | 벼 유래의 OsABF2 유전자 및 이의 용도 |
CN106674340B (zh) * | 2015-11-09 | 2020-07-24 | 中国科学院植物研究所 | 一种杂交构树转录因子BpSEM及其编码基因与应用 |
CN113234730B (zh) * | 2021-05-11 | 2023-11-10 | 兰州理工大学 | 重组基因片段4IIA1bZIP及其应用 |
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- 2006-03-15 US US12/084,346 patent/US20090089899A1/en not_active Abandoned
Non-Patent Citations (9)
Title |
---|
DATABASE GENBANK 5 September 2000 (2000-09-05), UNO Y. ET AL: "Arabidopsis basic leucine zipper transcription factors involved in an abscisic acid-dependent signal transduction pathway under drought and high-salinity conditions", XP003012626, Database accession no. AB017160 * |
FUJITA Y. ET AL: "AREB1 is a transcription activator of novel ABRE-dependent ABA signaling that enhances drought stress tolerance in Arabidopsis", PLANT CELL, vol. 17, no. 12, December 2005 (2005-12-01), pages 3470 - 3488, XP003012625 * |
FUJITA Y. ET AL: "Shiroinunazuna no ABA Yudosei Tensha Inshi AREB1 no Tensha Seigyo Kiko no Kaiseki", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 26, 2003, pages 620 - 1PB-057 * |
FUJITA Y. ET AL: "Shiroinunazuna no ABA Yudosei Tnesha Inshi AREB1 no Kanso Stress Oto ni okeru Yakuwari", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 27, 2004, pages 603 - 1PB-513 * |
FUJITA Y. ET AL: "Shiroinunazuna no Kanso Stress Oto ni okeru ABA Yudosei Tensha Inshi AREB1 no Yakuwari", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 28, 25 November 2005 (2005-11-25), pages 652 - 3P-0526 * |
FURUHATA K. ET AL: "ABA ni Izon shita Arabidopsis bZIP-gata Tensha Inshi AREB1 no Tensha Kasseika", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 26, 2004, pages 618 - 1PB-046 * |
FURUHATA K. ET AL: "bZIP-gata Tensha Inshi AREB1 ni yoru Idenshi Hatsugen Seigyo", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 27, 2004, pages 603 - 1PB-514 * |
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCE USA, vol. 97, no. 21, 2000, pages 11632 - 11637 * |
SAKUMA H. ET AL: "Shiroinunazuna no Kanso, Shio Stress Oto ni Kan'yo suru Tensha Inshi DREB2A no Kasseigata Hen'itai o Mochiita Kino Kaiseki", ANNUAL MEETING OF THE MOLECULAR BIOLOGY SOCIETY OF JAPAN PROGRAM KOEN YOSHISHU, vol. 26, 2003, pages 618 - 1PB-047 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112008002435T5 (de) | 2007-09-18 | 2010-07-22 | Basf Plant Science Gmbh | Pflanzen mit erhöhtem Ertrag |
US8664475B2 (en) | 2007-09-18 | 2014-03-04 | Basf Plant Science Gmbh | Plants with increased yield |
US8809059B2 (en) | 2007-09-21 | 2014-08-19 | Basf Plant Science Gmbh | Plants with increased yield |
CN112521467A (zh) * | 2019-09-17 | 2021-03-19 | 中国科学技术大学 | 一种与植物抗逆性相关基因agl103及其编码蛋白与应用 |
CN112521467B (zh) * | 2019-09-17 | 2022-09-09 | 中国科学技术大学 | 一种与植物抗逆性相关基因agl103及其编码蛋白与应用 |
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US20090089899A1 (en) | 2009-04-02 |
BRPI0618134A2 (pt) | 2011-08-16 |
JP2007124925A (ja) | 2007-05-24 |
CA2622556A1 (en) | 2007-05-10 |
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