WO2009110466A1 - 植物の油脂を増産させる遺伝子及びその利用方法 - Google Patents
植物の油脂を増産させる遺伝子及びその利用方法 Download PDFInfo
- Publication number
- WO2009110466A1 WO2009110466A1 PCT/JP2009/053960 JP2009053960W WO2009110466A1 WO 2009110466 A1 WO2009110466 A1 WO 2009110466A1 JP 2009053960 W JP2009053960 W JP 2009053960W WO 2009110466 A1 WO2009110466 A1 WO 2009110466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- leu
- plant
- amino acid
- asp
- gene
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/64—Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
- C12P7/6436—Fatty acid esters
- C12P7/6445—Glycerides
- C12P7/6463—Glycerides obtained from glyceride producing microorganisms, e.g. single cell oil
-
- 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
-
- 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
- C12N15/8242—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits
- C12N15/8243—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine, caffeine
- C12N15/8247—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine, caffeine involving modified lipid metabolism, e.g. seed oil composition
Definitions
- Biomass generally refers to the total amount of organisms that inhabit or exist per certain area, and in particular when plants are targeted, it means the dry weight per unit area.
- the unit of biomass is quantified by mass or energy amount.
- biomass and “biomass” are synonymous with the expression “biomass”.
- Standing crop is sometimes used. Since plant biomass is generated by fixing carbon dioxide in the atmosphere using solar energy, it can be captured as so-called carbon neutral energy. Therefore, increasing plant biomass has the effects of global environmental conservation, prevention of global warming, and reduction of greenhouse gas emissions. Therefore, the technology for increasing plant biomass production is highly industrially important.
- plants are cultivated for the purpose of part of the tissue itself (seed, root, leaf stem, etc.) or for the purpose of producing various substances such as fats and oils.
- fats and oils produced by plants soybean oil, sesame oil, olive oil, coconut oil, rice oil, cottonseed oil, sunflower oil, corn oil, bean flower oil, palm oil, rapeseed oil, etc. have been known since ancient times. Widely used in industrial applications.
- oils and fats produced by plants are also used as raw materials for biodiesel fuel and bioplastics, and their applicability is expanding as petroleum alternative energy.
- the technology to increase the oil production of plant seeds can be broadly divided into the improvement of cultivation methods and the development of varieties with increased fat production.
- the methods for developing oil-and-fat increased varieties are broadly divided into conventional breeding methods centering on mating technology and molecular breeding methods by genetic recombination.
- the production of fats and oils by genetic recombination includes A) a technique that modifies the synthesis system of seed triacylglycerol (TAG), the main component of vegetable fats and oils, and B) the morphogenesis and metabolism of plants and the expression of genes related to them. There are known techniques for altering various regulatory genes that control the regulation.
- TAG seed triacylglycerol
- Non-patent Document 2 there is a report on fat and oil production technology by overexpression of DGAT (diacylglycerol acyltransferase) that transfers an acyl group to the sn-3 position of diacylglycerol.
- DGAT diacylglycerol acyltransferase
- Non-patent Document 2 it has been reported that the fat content and seed weight increase as the expression level of DGAT increases, and the number of seeds per individual may increase.
- the seed oil content of Arabidopsis to which this method was applied increased by 46%, and the amount of oil per individual increased by about 125% at the maximum.
- Patent Document 1 a technique is employed in which a gene that enhances the oil content of seeds is selected after a recombinant plant in which transcription factors are overexpressed or knocked out comprehensively is produced. According to Patent Document 1, it is described that the oil content of seeds increased by 23% due to the overexpression of ERF subfamily B-4 transcription factor gene. However, Patent Document 1 does not describe the increase or decrease in the fat content per individual.
- Non-Patent Document 3 describes that the oil content of seeds is improved by overexpressing WRINKLED1, which is a transcription factor having an AP2 / EREB domain.
- the purpose is to provide.
- a transcription factor belonging to a specific transcription factor family and a functional peptide (hereinafter referred to as a repressor domain) that converts an arbitrary transcription factor into a transcription repressor. It was found that various quantitative traits can be improved by expressing a chimeric protein that is fused with the above, and in particular, the substance productivity per individual, especially the oil and fat productivity can be improved.
- the present invention has been completed.
- a plant according to the present invention is a chimeric protein obtained by fusing a transcription factor belonging to the transcription factor family comprising a protein consisting of the amino acid sequence shown in SEQ ID NO: 4 and a functional peptide that converts any transcription factor into a transcription repressor. Is expressed.
- the transcriptional control activity, particularly the transcription promoting activity in a predetermined transcription factor is suppressed by fusing a functional peptide.
- the transcription factor for fusing the functional peptide is preferably any of the following proteins (a) to (c).
- A a protein comprising the amino acid sequence shown in SEQ ID NO: 4
- B comprising an amino acid sequence in which one or a plurality of amino acids are deleted, substituted, added or inserted in the amino acid sequence shown in SEQ ID NO: 4, and having transcription promoting activity
- C a protein having transcription-promoting activity encoded by a polynucleotide that hybridizes under stringent conditions to a polynucleotide comprising a base sequence complementary to the base sequence shown in SEQ ID NO: 3
- Examples of the peptide include the following formulas (1) to (8).
- the manufacturing method of the substance using the plant concerning this invention includes the process of isolate
- fats and oils can be mentioned as the above substances.
- Genes involved in the pigment synthesis pathway include genes that code for factors related to the substrate and product transport of the pigment synthesis pathway metabolism, genes that encode enzymes that catalyze the pigment synthesis pathway metabolism, and pigment synthesis systems. It contains a gene that encodes an enzyme that catalyzes a reaction that forms a field of tract metabolic reaction.
- genes that encode factors related to transport of substrates and products of pigment synthesis pathway metabolic reactions genes that encode enzymes that catalyze pigment synthesis pathway metabolism reactions, and reactions that form fields of pigment synthesis pathway metabolism reactions
- genes that encode factors related to transport of substrates and products of pigment synthesis pathway metabolic reactions genes that encode enzymes that catalyze pigment synthesis pathway metabolism reactions, and reactions that form fields of pigment synthesis pathway metabolism reactions
- a gene that regulates the expression of a gene encoding an enzyme that catalyzes A gene that regulates the expression of a gene encoding an enzyme that catalyzes.
- the method for producing a plant-derived oil / fat uses seeds collected from a plant body that lacks the function of at least one gene selected from the group consisting of a chalcone synthase gene, a chalcone isomerase gene, and a flavone-3-hydrase gene. It includes a step of recovering the fat and oil component.
- the screening method for a plant body with an improved amount of oils and fats includes a step of collecting seeds from a plant body to be evaluated for the amount of oils and fats in seeds, and the seed coat color of the collected seeds. And the step of determining that the amount of oil and fat in the seed is high when it is white.
- the plant according to the present invention has improved substance productivity per individual. Therefore, by using the plant according to the present invention, the productivity of the target substance can be improved, and the target substance can be produced at a low cost.
- the method for producing plant-derived fats and oils according to the present invention improves the productivity of fats and oils because the amount of fats and oils contained per unit amount of seeds is significantly improved in plants lacking the function of a specific gene. can do.
- the plant screening method according to the present invention for improving the amount of fats and oils allows quick and simple screening using a small amount of seeds because the amount of fats and oils in the seeds is evaluated non-destructively.
- FIG. 6 is a characteristic diagram showing the results of calculating the integrated values of R value, G value, and B value using image data for the seed coat color of seeds and comparing them with wild type seeds.
- the plant according to the present invention is a fusion of a transcription factor belonging to a predetermined transcription factor family, in particular, a transcription factor belonging to a predetermined transcription factor family and a functional peptide that converts any transcription factor into a transcriptional repressor. It expresses the chimeric protein thus produced, and has improved substance productivity per individual as compared with the wild type plant. That is, the plant body according to the present invention is a plant body in which a transcription factor is expressed as a chimeric protein with the above functional peptide so as to significantly improve substance productivity in the desired plant. .
- the transcription promoting activity in the transcription factor is suppressed by fusing with the functional peptide.
- the transcription repressing effect due to the functional peptide appears as a dominant trait. It is preferable to have.
- the substance productivity per individual means the content per unit volume of various substances produced by the plant.
- the substance is not particularly limited, and may be a substance that is originally produced by a plant, or a substance that is not originally produced by a plant but can be produced by a genetic manipulation technique or the like. Also good.
- the target product may be lignocellulose that occupies most of the weight of the plant, or may be vegetable oil that is industrially used as seed oil.
- the vegetable oil may be a simple lipid that is an ester of a fatty acid and an alcohol, may be a complex lipid containing phosphorus, sugar, nitrogen, or the like, or may be a fatty acid itself.
- the simple lipid alcohol may be a higher alcohol having a high molecular weight or a polyhydric alcohol such as glycerol (glycerin).
- the fatty acid of the simple lipid may be a saturated fatty acid, an unsaturated fatty acid, or a special fatty acid containing a hydroxyl group or an epoxy group.
- the simple lipid that is an ester of glycerol and a fatty acid may be monoacylglycerol, diacylglycerol, or triacylglycerol.
- fats and oils will be exemplified and described as substances that improve productivity, but the technical scope of the present invention is not limited thereto.
- the present invention is similarly applied to substances other than fats and oils as substances produced by plants.
- the plant body is not particularly limited, and any plant can be targeted.
- the target plant include soybean, sesame, olive oil, eggplant, rice, cotton, sunflower, corn, sugarcane, jatropha, palm palm, tobacco, beni flower and rapeseed.
- Arabidopsis thaliana which is widely used as a model organism in gene analysis of plants and has established a method for gene expression analysis, can also be used as a target plant.
- transcriptional repression that the transcription factor chimeric protein has as an activity is to recognize the cis sequence recognized by the transcription factor and cis sequences in other transcription factors similar to the cis sequence, and actively promote downstream gene expression. It can also be called a transcriptional repressing factor.
- the method for suppressing transcription that the chimeric protein of transcription factor has as an activity is not particularly limited, but the method of constructing a chimeric protein (fusion protein) to which a repressor domain sequence or SRDX sequence is added is most preferable.
- the repressor domain sequence is an amino acid sequence that constitutes a peptide that converts an arbitrary transcription factor into a transcription repressor, and is a sequence that has been found variously by the present inventors.
- a repressor domain sequence for example, JP-A-2001-269177, JP-A-2001-269178, JP-A-2001-292777, JP-A-2001-292777, JP-A-2001-269176, JP-A-2001-269176 2001-269179, WO03 / 055903 pamphlet, Ohta, M., Matsui, K., Hiratsu, K., Shinshi, H.
- the repressor domain sequence is excised from the Class II ERF (Ethylene Responsive Element Binding Factor) protein and the plant zinc finger protein (Zinc Finger Protein, such as Arabidopsis SUPERMAN protein, etc.) and has a very simple structure. .
- ERF Ethylene Responsive Element Binding Factor
- Zinc Finger Protein such as Arabidopsis SUPERMAN protein, etc.
- transcriptional regulatory factors expressed as chimeric proteins include transcription factors specified by AGI code At1g71030 in Arabidopsis thaliana (hereinafter simply referred to as “transcription factor At1g71030”).
- the transcription factor At1g71030 is a transcription factor of the myb family and is known to be similar to MybHv5 GI: 19055 derived from barley.
- the amino acid sequence of the transcription factor At1g71030 is shown in SEQ ID NO: 4.
- the base sequence of the gene encoding the transcription factor At1g71030 is shown in SEQ ID NO: 3.
- Transcription coupling factor (transcription coactivator) specified by At5g24520 (hereinafter simply referred to as “transcription coupling factor At5g24520”), transcription repressor (transcription repressor) and transcription repression coupling factor (transcripition corepressor) are known as transcription control factors.
- transcription control factors transcription control factors
- transcription repressor transcription repressor
- transcription repression coupling factor transcription control factors
- a chimeric protein to which a repressor domain is added can also be constructed for these transcription coupling factors and transcription repression factors.
- the AGI code At5g24520 is composed of a transcriptional coupling factor known as transparent testa glabra 1 protein (TTG1).
- GenBank accession number AAF27919 from Malus domestica
- GenBank accession number AAC18914 from Petunia hybrida
- GenBank accession number AAM95645 from Gossypium hirsutum
- GenBank accession number BAB58883 derived from Perilla frutescens is homologous to the transcriptional coupling factor At5g24520, and a function equivalent to the function described in this specification can be expected.
- the amino acid sequence of the transcription coupling factor At5g24520 is shown in SEQ ID NO: 2.
- the base sequence of the gene encoding the transcription coupling factor At5g24520 is shown in SEQ ID NO: 1.
- the transcription coupling factor At5g24520 and the transcription factor At1g71030 which are the targets of the chimeric protein are not limited to those consisting of the amino acid sequences shown in SEQ ID NOs: 2 and 4, respectively, and one or more amino acid sequences are deleted in the amino acid sequence.
- the amino acid sequence may include a substituted, added, or inserted amino acid sequence, and may have transcription promoting activity.
- the plurality of amino acids for example, 1 to 20, preferably 1 to 10, more preferably 1 to 7, further preferably 1 to 5, particularly preferably 1 to 3 are used. means.
- amino acid deletion, substitution, or addition can be performed by modifying the base sequence encoding the transcription factor by a technique known in the art.
- Mutation can be introduced into a nucleotide sequence by a known method such as Kunkel method or Gapped duplex method or a method according thereto, for example, a mutation introduction kit using site-directed mutagenesis (for example, Mutant- Mutations are introduced using K, Mutant-G (both trade names, manufactured by TAKARA Bio Inc.) or the like, or using LA PCR-in-vitro Mutagenesis series kits (trade name, manufactured by TAKARA Bio Inc.).
- a mutation introduction kit using site-directed mutagenesis for example, Mutant- Mutations are introduced using K, Mutant-G (both trade names, manufactured by TAKARA Bio Inc.) or the like, or using LA PCR-in-vitro Mutagenesis series kits (trade name, manufactured by TAKARA Bio Inc.).
- EMS ethyl methanesulfonic acid
- 5-bromouracil 2-aminopurine
- hydroxylamine N-methyl-N'-nitro-N nitrosoguanidine
- other carcinogenic compounds are representative.
- a method using a chemical mutagen such as that described above may be used, or a method using radiation treatment or ultraviolet treatment represented by X-rays, alpha rays, beta rays, gamma rays and ion beams may be used.
- transcription coupling factor and transcription factor that are the target of the chimeric protein are not limited to the transcription coupling factor At5g24520 and the transcription factor At1g71030 in Arabidopsis thaliana, and the transcription coupling factor having the same function in plants other than Arabidopsis thaliana (for example, the plants described above) And transcription factors (hereinafter referred to as homologous transcription coupling factors and homologous transcription factors, respectively).
- homologous transcription coupling factor for transcription coupling factor At5g24520 or homologous transcription factor for transcription factor At1g71030 is based on the amino acid sequence of transcription coupling factor At5g24520 or transcription factor At1g71030 or the base sequence of each gene if plant genome information is known.
- the homologous transcription coupling factor and the homologous transcription factor are, for example, 70% or more, preferably 80% or more, more preferably 90% or more, most preferably, relative to the amino acid sequence of the transcription coupling factor At5g24520 or the transcription factor At1g71030. It is searched as an amino acid sequence having a homology of 95% or more.
- the homology value means a value obtained by default setting using a computer program in which the blast algorithm is implemented and a database storing gene sequence information.
- a homologous gene can be identified by isolating a genomic region or cDNA that hybridizes under stringent conditions to at least a part.
- stringent conditions refer to conditions under which so-called specific hybrids are formed and non-specific hybrids are not formed. For example, hybridization at 45 ° C.
- Hybridization can be performed by a conventionally known method such as the method described in J. Sambrook et al. Molecular lonCloning, A Laboratory Manual, 2nd Ed., Cold Spring Harbor Laboratory (1989).
- the plant according to the present invention exhibits a characteristic that the production amount of fats and oils is significantly improved by expressing a chimeric protein of the transcription factor and the functional peptide as described above. Moreover, when the chimeric protein of the transcription coupling factor and the functional peptide described above is expressed, the oil and fat production amount is significantly improved.
- the target transcription factor is expressed in a state in which the transcription promoting activity is suppressed, and the cis sequence that is homologous to the cis sequence recognized by the target transcription factor is recognized. It is characterized by significantly improving oil production by expressing it as transcriptional repressive activity, and changing the affinity specificity of other transcription factors and transcription factors with other factors, nucleic acids, lipids and carbohydrates. Show.
- endogenous transcription factors and transcription coupling factors may be modified to produce the chimeric protein.
- a gene encoding the chimeric protein may be introduced to express the gene. good.
- a technique of introducing and expressing the chimeric protein (fusion protein) in a plant is preferable.
- transcription factor with suppressed transcription promoting activity is not particularly limited, and a transcription factor having a significantly reduced transcription promoting activity inherent in the transcription factor. It means that.
- functional peptide that converts an arbitrary transcription factor into a transcriptional repressor refers to a transcriptional promoter inherent in the transcription factor when fused to an arbitrary transcription factor to form a chimeric protein. It means that the peptide has a function of becoming a transcription factor with significantly reduced activity (sometimes referred to as a transcription repressor conversion peptide).
- Such a “functional peptide that converts an arbitrary transcription factor into a transcription repressor” is not particularly limited, but is preferably a peptide consisting of an amino acid sequence known as a repressor domain sequence or SRDX sequence. .
- the transcription repressing conversion peptide is described in detail in JP-A-2005-204657, and all of those disclosed in the gazette can be used.
- Examples of the transcription repressor converting peptide include amino acid sequences represented by any of the following formulas (1) to (8).
- the number of amino acid residues represented by X1 may be in the range of 0 to 10. Moreover, the kind of specific amino acid which comprises the amino acid residue represented by X1 is not specifically limited, What kind of thing may be sufficient.
- the amino acid residue represented by X1 is preferably as short as possible in view of the ease of synthesizing the transcriptional repression converting peptide of formula (1). Specifically, the number of amino acid residues represented by X1 is preferably 5 or less.
- the number of amino acid residues represented by X3 may be at least 6.
- the kind of specific amino acid which comprises the amino acid residue represented by X3 is not specifically limited, What kind of thing may be sufficient.
- the number of amino acid residues represented by Y1 is 0, similar to X1 of the transcriptional repression converting peptide of the above formula (1). It may be in the range of up to 10 pieces. Moreover, the kind of specific amino acid which comprises the amino acid residue represented by Y1 is not specifically limited, What kind of thing may be sufficient. Specifically, the number of amino acid residues represented by Y1 is preferably 5 or less.
- the number of amino acid residues represented by Y3 may be at least 6 as in the case of X3 of the transcription repressing converting peptide of the above formula (1).
- the specific kind of amino acid which comprises the amino acid residue represented by Y3 is not specifically limited, What kind of thing may be sufficient.
- the amino acid residue represented by Z1 contains Leu within the range of 1 to 3.
- the case of 1 amino acid is Leu
- the case of 2 amino acids is Asp-Leu
- the case of 3 amino acids is Leu-Asp-Leu.
- the number of amino acid residues represented by Z3 may be in the range of 0-10.
- the kind of specific amino acid which comprises the amino acid residue represented by Z3 is not specifically limited, What kind of thing may be sufficient.
- the number of amino acid residues represented by Z3 is more preferably 5 or less.
- Specific examples of the amino acid residue represented by Z3 include Gly, Gly-Phe-Phe, Gly-Phe-Ala, Gly-Tyr-Tyr, Ala-Ala-Ala and the like. It is not limited.
- the number of amino acid residues in the entire transcriptional repressor conversion peptide represented by the formula (3) is not particularly limited, but from the viewpoint of ease of synthesis, it may be 20 amino acids or less. preferable.
- the transcriptional repression conversion peptide of the above formula (4) is a hexamer (6mer) composed of 6 amino acid residues.
- the amino acid sequence when the amino acid residue represented by Z4 is Glu corresponds to the 196th to 201st amino acid sequence of Arabidopsis SUPERMAN protein (SUP protein). .
- the various transcription repressor converting peptides described above can be modified with the transcription factors and transcription coupling factors by fusing them with the transcription factors and transcription coupling factors described above to form chimeric proteins (fusion proteins).
- the transcription factor or transcription coupling factor can be modified into a transcriptional repression factor or a negative transcription coupling factor by fusing with the transcription factor or transcription coupling factor described above to form a chimeric protein (fusion protein).
- a transcriptional repressing factor that is not dominant can be used as a dominant type transcriptional repressing factor.
- a chimeric protein can be produced by obtaining a fusion gene with a gene encoding a transcription factor or transcription coupling factor using the polynucleotide encoding the transcription repressing conversion peptide.
- a fusion gene is constructed by linking a polynucleotide encoding the transcription repressing conversion peptide (referred to as a transcription repressing conversion polynucleotide) and a gene encoding the transcription factor or transcription coupling factor, Introduce into cells.
- a chimeric protein fusion protein
- the specific base sequence of the transcriptional repression conversion polynucleotide is not particularly limited, and may include a base sequence corresponding to the amino acid sequence of the transcriptional repression conversion peptide based on the genetic code.
- the transcriptional repression conversion polynucleotide may include a base sequence serving as a linking site for linking with a transcription factor gene.
- an additional base sequence for matching them may be included. Good.
- a polypeptide having a linker function for connecting between a transcription factor or transcription coupling factor and a transcription repressor conversion peptide or a chimeric protein (fusion protein) such as His, Myc, Flag, etc. for epitope labeling.
- a chimeric protein such as His, Myc, Flag, etc. for epitope labeling.
- additional polypeptides such as polypeptides may be included.
- the chimeric protein (fusion protein) may contain a structure other than the polypeptide, such as a sugar chain or an isoprenoid group, as necessary.
- the method for producing a plant body is not particularly limited as long as it includes a process of producing a chimeric protein of the above-mentioned transcription factor or transcription coupling factor and a transcription repressing conversion peptide in the plant body to improve the oil productivity.
- a production method including steps such as an expression vector construction step, a transformation step, and a selection step.
- steps such as an expression vector construction step, a transformation step, and a selection step.
- each step will be specifically described.
- the expression vector construction step is particularly limited as long as it is a step for constructing a recombinant expression vector comprising the gene encoding the transcription factor or transcription coupling factor described above, a transcriptional repression conversion polynucleotide, and a promoter. is not.
- Various vectors known in the art can be used as a base vector for the recombinant expression vector.
- a plasmid, phage, cosmid or the like can be used, and can be appropriately selected according to the plant cell to be introduced and the introduction method. Specific examples include pBR322, pBR325, pUC19, pUC119, pBluescript, pBluescriptSK, and pBI vectors.
- the method for introducing a vector into a plant is a method using Agrobacterium
- the pBI binary vector include pBIG, pBIN19, pBI101, pBI121, pBI221, and the like.
- the promoter is not particularly limited as long as it is a promoter capable of expressing a gene in a plant body, and a known promoter can be suitably used.
- promoters include cauliflower mosaic virus 35S promoter (CaMV35S), various actin gene promoters, various ubiquitin gene promoters, nopaline synthase gene promoter, tobacco PR1a gene promoter, tomato ribulose 1,5-diphosphate carboxylase Oxidase small subunit gene promoter, napin gene promoter, oleosin gene promoter and the like.
- cauliflower mosaic virus 35S promoter, actin gene promoter, or ubiquitin gene promoter can be more preferably used.
- any gene can be strongly expressed when introduced into a plant cell.
- the promoter may be linked so that it can express a fusion gene in which a gene encoding a transcription factor or transcription coupling factor and a transcriptional repression-converting polynucleotide are linked, and introduced into the vector.
- the specific structure is not particularly limited.
- the recombinant expression vector may further contain other DNA segments in addition to the promoter and the fusion gene.
- the other DNA segment is not particularly limited, and examples thereof include a terminator, a selection marker, an enhancer, and a base sequence for improving translation efficiency.
- the recombinant expression vector may further have a T-DNA region.
- the T-DNA region can increase the efficiency of gene transfer particularly when Agrobacterium is used to introduce the recombinant expression vector into a plant body.
- the transcription terminator is not particularly limited as long as it has a function as a transcription termination site, and may be a known one.
- the transcription termination region (Nos terminator) of the nopaline synthase gene the transcription termination region of the cauliflower mosaic virus 35S (CaMV35S terminator) and the like can be preferably used.
- the Nos terminator can be more preferably used.
- a transformant selection marker for example, a drug resistance gene can be used.
- drug resistance genes include drug resistance genes for hygromycin, bleomycin, kanamycin, gentamicin, chloramphenicol and the like.
- Examples of the base sequence for improving the translation efficiency include an omega sequence derived from tobacco mosaic virus. By placing this omega sequence in the untranslated region (5′UTR) of the promoter, the translation efficiency of the fusion gene can be increased.
- the recombinant expression vector can contain various DNA segments depending on the purpose.
- the method for constructing the recombinant expression vector is not particularly limited, and the promoter, the gene encoding the transcription factor or the transcription coupling factor, the transcription repressing conversion polynucleotide, and the necessary vectors are selected as appropriate mother vectors.
- the other DNA segments may be introduced in a predetermined order.
- a fusion gene is constructed by linking a gene encoding a transcription factor and a transcription repressor conversion polynucleotide, and then the fusion gene and a promoter (such as a transcription terminator, if necessary) are linked to an expression cassette. May be constructed and introduced into a vector.
- the cleavage site of each DNA segment is set as a complementary protruding end and the order of the DNA segment is defined by reacting with a ligation enzyme.
- the terminator is included in the expression cassette, the promoter, the chimeric gene, and the terminator may be in order from the upstream.
- the types of reagents for constructing the recombinant expression vector that is, the types of restriction enzymes and ligation enzymes are not particularly limited, and commercially available ones may be appropriately selected and used.
- the above-described recombinant expression vector propagation method is not particularly limited, and a conventionally known method can be used.
- Escherichia coli may be used as a host and propagated in the E. coli.
- a preferred E. coli type may be selected according to the type of vector.
- Transformation step is a step of introducing a plant cell using the above-described recombinant expression vector so as to express the above-described fusion gene.
- a method (transformation method) for introducing a recombinant expression vector into a plant cell is not particularly limited, and any conventionally known method suitable for the plant cell can be used. Specifically, for example, a method using Agrobacterium or a method of directly introducing into plant cells can be used. As a method using Agrobacterium, for example, Bechtold, E., Ellis, J. and Pelletier, G. (1993) In Planta Agrobacterium-mediated gene transfer by infiltration of adult Arabidopsis plants. CR Acad. Sci. Paris Sci.
- Examples of methods for directly introducing a recombinant expression vector and DNA containing the gene of interest into plant cells include microinjection, electroporation (electroporation), polyethylene glycol, particle gun, and protoplast fusion. Method, calcium phosphate method and the like can be used.
- a transcription unit necessary for expression of the target gene such as a promoter or transcription terminator, and DNA containing the target gene are sufficient, and the vector function Is not mandatory.
- the DNA contains only the protein coding region of the gene of interest that does not have a transcription unit, it is sufficient if it can be integrated without the transcription unit of the host and the gene of interest can be expressed.
- Examples of plant cells into which the above recombinant expression vector and the DNA containing the gene of interest and the DNA containing the gene DNA of interest and not containing the expression vector are introduced include, for example, plant organs such as flowers, leaves, and roots Cell, callus, suspension culture cell and the like of each tissue.
- the recombinant expression vector may be appropriately constructed according to the type of plant to be produced.
- An expression vector may be constructed in advance and introduced into plant cells. That is, the method for producing a plant according to the present invention may or may not include a transformation DNA construction step using the above-described recombinant expression vector.
- the selection method is not particularly limited.
- the selection may be performed on the basis of drug resistance such as hygromycin resistance, and after growing the transformant, the plant itself or any organ or tissue may be selected.
- You may select from fat-and-oil content contained.
- a method of quantifying the oil and fat component from the seeds of the transformant according to a conventional method and comparing it with the oil and fat content contained in the seeds of the non-transformed plant body can be mentioned. (See examples below).
- the method for producing a plant according to the present invention since the fusion gene is introduced into the plant, it is possible to obtain offspring from which the oil content is significantly improved by sexual reproduction or asexual reproduction. Become. It is also possible to obtain propagation materials such as plant cells, seeds, fruits, strains, calluses, tubers, cut ears, lumps, etc. from the plants and their progeny, and mass-produce the plants based on these. . Therefore, the method for producing a plant according to the present invention may include a breeding process (mass production process) for breeding the selected plant.
- a breeding process mass production process
- the plant body in the present invention includes at least one of a grown plant individual, a plant cell, a plant tissue, a callus, and a seed. That is, in this invention, if it is a state which can be made to grow finally to a plant individual, all will be considered as a plant body.
- the plant cells include various forms of plant cells. Such plant cells include, for example, suspension culture cells, protoplasts, leaf sections and the like. Plants can be obtained by growing and differentiating these plant cells.
- regeneration of the plant body from a plant cell can be performed using a conventionally well-known method according to the kind of plant cell. Therefore, the method for producing a plant according to the present invention may include a regeneration step for regenerating the plant from plant cells or the like.
- the method for producing a plant according to the present invention is not limited to the method of transforming with a recombinant expression vector, and other methods may be used.
- the chimeric protein (fusion protein) itself may be administered to a plant body.
- the chimeric protein (fusion protein) may be administered to the young plant so that the fat content can be improved at the site of the plant finally used.
- the administration method of the chimeric protein (fusion protein) is not particularly limited, and various known methods may be used.
- a chimeric protein of a transcription factor belonging to a predetermined transcription factor family and the functional peptide by expressing a chimeric protein of a transcription factor belonging to a predetermined transcription factor family and the functional peptide, a substance per individual as compared with a wild-type plant body.
- a plant body with improved productivity can be provided.
- a predetermined transcription coupling factor, the above functional peptide, and a chimeric protein it is possible to provide a plant body having improved substance productivity per individual compared to a wild type plant body.
- the transcription promoting activity of the target transcription factor may be suppressed, or the transcriptional inhibitory effect on the homologous sequence of the cis sequence recognized by the target transcription factor may be exhibited. is there.
- the chimeric protein may act to change the affinity specificity for other factors, DNA, RNA, lipids or carbohydrates that have affinity for the transcription factor or transcription coupling factor of interest. In some cases, it may act to improve the affinity for a substance having no affinity for the transcription factor of interest.
- a transcription factor that is a target of the chimeric protein a transcription factor that recognizes a cis sequence that is homologous to the cis sequence recognized by the subject, and a transcription factor that is the target of the chimeric protein
- transcription factors and other factors having affinity for the transcription factor that is the target of the chimeric protein are also expressed in the plant body, the gene to be controlled to be dominant negative due to the action effect of the chimeric protein described above.
- Expression can be suppressed. Thereby, in the plant body according to the present invention, the expression level of the gene group related to fat and oil production and / or the gene group related to degradation of the produced fat and oil is changed, and as a result, the fat and oil content is significantly improved. It is thought that.
- the fat content is significantly improved when there is no change in the seed mass per grain compared to the wild type, but when the fat content is improved, and the seed mass per grain compared to the wild type.
- it becomes significantly large and the amount of fats and oils is improved it means either the case where the fats and oils content in seeds is improved as compared with the wild type.
- the amount of oil and fat produced by one plant is improved.
- the plant according to the present invention can be used in a plant-derived oily production method.
- fats and oils can be produced by growing a plant according to the present invention, collecting seeds, and collecting oil and fat components from the collected seeds.
- the method for producing fats and oils using the plant according to the present invention can be said to be a method with excellent productivity because the fat and oil content in a single plant is high.
- the number of cultivated individuals per unit cultivated land area is constant, the amount of fats and oils produced from per unit cultivated land area is greatly improved by using the plant according to the present invention. Therefore, the manufacturing cost required for oil production can be significantly reduced by using the plant according to the present invention.
- the method for producing fats and oils using the plant according to the present invention is a method with excellent productivity because the fats and oils content in the seed per unit weight is high.
- the fats and oils to be produced are not particularly limited.
- oils derived from plants such as oil, benflower oil and rapeseed oil.
- the manufactured fats and oils can be widely used for household use and industrial use, and can also be used as a raw material for biodiesel fuel. That is, by using the plant body according to the present invention, the above-described fats and oils for home use or industrial use, biodiesel fuel, and the like can be produced at low cost.
- a method for producing plant-derived fats and oils in addition, in the present invention, the inventors have found a novel finding that the fat and oil content is significantly improved in seeds collected from plants exhibiting a specific phenotype. Specifically, seeds collected from four types of pigment synthesis pathway-deficient strains (tt4, tt5, tt6 and ⁇ CHS) disclosed in the reference (Plant J. 1995 Nov; 8 (5): 659-71.) The oil content in seeds is significantly improved compared to the wild type.
- the method for producing a plant-derived oil / fat uses seeds collected from a plant body that lacks the function of at least one gene selected from the group consisting of a chalcone synthase gene, a chalcone isomerase gene, and a flavone-3-hydrase gene. It includes a step of recovering the fat and oil component.
- the tt4 strain and ⁇ CHS disclosed in the above references are strains lacking the chalcone synthase gene, the tt5 strain is a strain lacking the chalcone isomerase gene, and the tt6 strain is a strain lacking the flavone-3-hydrase gene It is.
- the base sequence of the chalcone synthase gene in Arabidopsis thaliana is shown in SEQ ID NO: 5, and the amino acid sequence of the chalcone synthase encoded by the gene is shown in SEQ ID NO: 6.
- the base sequence of the chalcone isomerase gene in Arabidopsis thaliana is shown in SEQ ID NO: 7, and the amino acid sequence of the chalcone isomerase encoded by the gene is shown in SEQ ID NO: 8.
- the base sequence of the flavone-3-hydrase gene in Arabidopsis thaliana is shown in SEQ ID NO: 9, and the amino acid sequence of the flavone-3-hydrase encoded by the gene is shown in SEQ ID NO: 10.
- the chalcone synthase gene, chalcone isomerase gene, and flavone-3-hydrase gene are not limited to the above specific sequences. That is, the chalcone synthase gene, the chalcone isomerase gene and the flavone-3-hydrase gene include an amino acid sequence in which one or a plurality of amino acid sequences are deleted, substituted, added or inserted in the above specific amino acid sequence, and It may encode a protein having chalcone synthase activity, chalcone isomerase activity and flavone-3-hydrase activity.
- amino acids for example, 1 to 20, preferably 1 to 10, more preferably 1 to 7, further preferably 1 to 5, particularly preferably 1 to 3 are used. means.
- amino acid deletion, substitution, or addition can be performed by modifying the above specific base sequence by a technique known in the art.
- Mutation can be introduced into a nucleotide sequence by a known method such as Kunkel method or Gapped duplex method or a method according thereto, for example, a mutation introduction kit using site-directed mutagenesis (for example, Mutant- Mutations are introduced using K, Mutant-G (both trade names, manufactured by TAKARA Bio Inc.) or the like, or using LA PCR-in-vitro Mutagenesis series kits (trade name, manufactured by TAKARA Bio Inc.).
- a mutation introduction kit using site-directed mutagenesis for example, Mutant- Mutations are introduced using K, Mutant-G (both trade names, manufactured by TAKARA Bio Inc.) or the like, or using LA PCR-in-vitro Mutagenesis series kits (trade name, manufactured by TAKARA Bio Inc.).
- EMS ethyl methanesulfonic acid
- 5-bromouracil 2-aminopurine
- hydroxylamine N-methyl-N'-nitro-N nitrosoguanidine
- other carcinogenic compounds are representative.
- a method using a chemical mutagen such as that described above may be used, or a method using radiation treatment or ultraviolet treatment represented by X-rays, alpha rays, beta rays, gamma rays and ion beams may be used.
- the chalcone synthase gene, chalcone isomerase gene, and flavone-3-hydrase gene include genes having the same function in plants other than Arabidopsis (for example, the plants described above) (hereinafter referred to as homologous genes).
- the homologous gene of chalcone synthase gene, chalcone isomerase gene or flavone-3-hydrase gene is the nucleotide sequence of chalcone synthase gene, chalcone isomerase gene or flavone-3-hydrase gene or the gene thereof if plant genome information is known. It is possible to search from the plant genome information to be searched based on the amino acid sequence encoded by.
- the homologous transcription factor is an amino acid having a homology of, for example, 70% or more, preferably 80% or more, more preferably 90% or more, and most preferably 95% or more with respect to the above specific amino acid sequence. Searched as an array.
- the homology value means a value obtained by default setting using a computer program in which the blast algorithm is implemented and a database storing gene sequence information.
- a genome is extracted from the target plant or a cDNA library of the target plant is constructed, and the chalcone synthase gene, chalcone isomerase gene or flavone-3-
- a homologous gene can be identified by isolating a genomic region or cDNA that hybridizes under stringent conditions to at least a part of the base sequence of the hydrase gene.
- stringent conditions refer to conditions under which so-called specific hybrids are formed and non-specific hybrids are not formed. For example, hybridization at 45 ° C.
- Hybridization can be performed by a conventionally known method such as the method described in J. Sambrook et al. Molecular lonCloning, A Laboratory Manual, 2nd Ed., Cold Spring Harbor Laboratory (1989).
- the method for producing plant-derived fats and oils according to the present invention is not limited to a system using seeds derived from Arabidopsis thaliana, and can be applied to any plant.
- plants to which the method for producing plant-derived oils and fats according to the present invention can be applied include dicotyledonous plants, monocotyledonous plants such as Brassicaceae, Gramineae, Eggplant, Legume, Willowaceae, etc. (see below) However, it is not limited to these plants.
- Brassicaceae Arabidopsis thaliana, Brassica (Brassica rapa, Brassica napus), Cabbage (Brassica oleracea var. Capitata), Rapeseed (Brassica rapa, Brassica napus), Nanohana (Brassica rapa, Brassica ⁇ napus) Pekinensis), Chingen rhinoceros (Brassica rapa var. (Brassica rapa var. Chinensis), Japanese radish (Brassica Raphanus sativus), Wasabi (Wasabia japonica), etc.
- Eggplant family tobacco (Nicotiana tabacum), eggplant (Solanum melongena), potato (Solaneum tuberosum), tomato (Lycopersicon lycopersicum), capsicum (Capsicum annuum), petunia (Petunia), etc.
- Legumes soybean (Glycinelymax), pea (Pisum sativum), broad bean (Vicia faba), wisteria (Wisteria floribunda), peanut (Arachis. Hypogaea), Lotus corniculatus var. (Vigna angularis), Acacia.
- Asteraceae chrysanthemum (Chrysanthemum morifolium), sunflower (Helianthus annuus), etc.
- Palms oil palm (Elaeis guineensis, Elaeis oleifera), coconut (Cocos nucifera), date palm (Phoenix dactylifera), wax palm (Copernicia) Ursiaceae: Rhis succedanea, Cashew nutcrest (Anacardium occidentale), Urushi (Toxicodendron vernicifluum), mango (Mangifera indica), pistachio (Pistacia vera) Cucurbitaceae: pumpkins (Cucurbita maxima, Cucurbita moschata, Cucurbita pepo), cucumbers (Cucumis sativus), callas (Trichosanthes cucumeroides), gourds (Lagenaria siceraria var. Gourda) Rosaceae: Almond (Amygdalus communis), Rose (Rosa), Strawberry (Fragaria), Sakura (Prunus), Apple (Malus pumila var. Domestica
- Lily family Tulip (Tulipa), Lily (Lilium), etc.
- Deletion of the function of a gene means that the gene is deleted from the genome, the expression (transcription level and translation level) of the gene is inhibited, and the activity of the protein encoded by the gene is reduced or It is meant to include deletion.
- a method for deleting a gene is not particularly limited, and examples thereof include a method using homologous recombination and a method using transposon. Moreover, when deleting the said gene, the full length of the said gene may be deleted, and you may delete partially.
- the method for inhibiting the expression of the gene is not particularly limited, but a method for deleting the promoter controlling the expression of the gene, or replacing the promoter controlling the expression of the gene with an expression-inducible promoter.
- examples of a method for reducing the activity of a protein encoded by a gene include a method of acting a substance having a function of specifically binding to the protein and suppressing the activity of the protein.
- examples of the substance include antibodies and inhibitors that can inhibit the function of the protein.
- the method for recovering fats and oils from seeds is not particularly limited, and any method such as a pressing method, an extraction method, and a pressing method may be used.
- a pressing method an extraction method
- a pressing method an extraction method
- a pressing method an extraction method
- a pressing method an extraction method
- a pressing method an oil and fat component
- an oil and fat component can be recovered from seeds collected from a plant by an ether extraction method using a Soxhlet extractor.
- the method for producing plant-derived fats and oils according to the present invention even if the amount of seeds that can be collected from a single plant is the same, because the fat and oil content per seed is high, the plant body is used. It can be said that this is an excellent method.
- the fats and oils to be produced are not particularly limited.
- soybean oil, sesame oil, olive oil, coconut oil, rice oil, cottonseed oil, sunflower oil, corn oil, beni flower Examples include oils derived from plants such as oil and rapeseed oil.
- the manufactured fats and oils can be widely used for household use and industrial use, and can also be used as a raw material for biodiesel fuel and bioplastic. That is, by using the plant according to the present invention, the above-described oils and fats for home use or industrial use, biodiesel fuel, bioplastic, and the like can be produced at low cost.
- a pigment synthesis pathway-deficient strain is a mutant strain that lacks the function of a gene involved in the pigment synthesis system, and has a phenotype in which the seed coat color is lighter than that of the wild strain (more white than the wild type). Indicates.
- the tt4 strain and ⁇ CHS disclosed in the above references are strains lacking the chalcone synthase gene, the tt5 strain is a strain lacking the chalcone isomerase gene, and the tt6 strain is a strain lacking the flavone-3-hydrase gene .
- the seed coat color becomes white due to the failure of pigment synthesis. Therefore, when seeds are collected from the plant to be screened and the seed coat color of the collected seeds is confirmed, the ability of pigment synthesis by the pigment synthesis pathway in the plant can be determined, and the seed content contained in the collected seeds can be determined with high accuracy. Can be estimated.
- the seed coat color of seeds collected from these plants can be observed and those that are whiter can be selected as varieties with high oil production.
- the plant body to be screened may be one subjected to some mutagen treatment, or a plant variety produced by a conventionally known breeding method or the like.
- the mutagen treatment is not particularly limited, and chemical mutagen and / or physical mutagen treatment widely used for inducing mutations can be used.
- chemical mutagen for example, ethyl methanesulfonate (EMS), ethylnitrosourea (ENS), 2-aminopurine, 5-bromouracil (5-BU), an alkylating agent and the like can be used.
- EMS ethyl methanesulfonate
- ENS ethylnitrosourea
- 2-aminopurine ethylnitrosourea
- 5-bromouracil (5-BU) 5-bromouracil
- an alkylating agent ethylating agent
- radiation ultraviolet rays, etc.
- Mutagenesis using these mutagens can be performed by known methods.
- the screening method of the present invention it is not necessary to destroy seeds collected from plants, and the amount of fats and oils contained in seeds is determined by a very simple and quick determination method such as observing the seed coat color visually. Can do.
- the seed coat color of seeds collected from plants may be judged from image data, and the seed coat color may be measured quantitatively.
- the seed image to be evaluated is converted into digital data, and the R value, G value, and B value (RGB value) of the seed region in the image data are measured.
- Any software for image processing software may be used to measure the R value, G value and B value of the seed region.
- the measured R value, G value, and B value are compared with the R value, G value, and B value in wild-type seeds.
- the integrated value of the measured R value, G value, and B value is calculated and compared with the integrated value of the R value, G value, and B value in wild-type seeds.
- the seed coat color of the seed to be measured Can be judged to be closer to white.
- the measured R value, G value, and B value integrated value show a value of 2.88 times or more of the R value, G value, and B value integrated value in the wild type seed, It can be determined that the seed is whitened (lightened).
- the seed coat color of the seed collected from the plant is observed as image data, it is not necessary to destroy the seed, and the amount of fats and oils contained in the seed is determined by a very simple and quick determination method. Can be determined.
- the seed coat color from the image data not only the integrated value of the R value, G value, and B value, but also the total value of the R value, G value, and B value may be calculated.
- Example 1 In this example, for the transcriptional coupling factor At5g24520 and the transcription factor At1g71030 in Arabidopsis thaliana, a chimeric protein (fusion protein) added with a repressor domain sequence was expressed in the plant body, and the fat content in the seed collected from the plant body was determined. It was measured. For comparison, with regard to the transcription factor At1g56650, a chimeric protein (fusion protein) was similarly expressed in the plant, and the oil content in the seeds was measured.
- Amplification of transcription factor gene From a cDNA library of Arabidopsis thaliana, using the primers described below, the coding region DNA fragment excluding the termination codon of At1g71030, the coding region DNA fragment including the termination codon, and the coding excluding the termination codon of At5g24520
- the DNA fragment of the region and the coding region DNA excluding the stop codon of At1g56650 were amplified by PCR. PCR conditions were 94 ° C for 1 minute, 47 ° C for 2 minutes, and extension reaction at 74 ° C for 1 minute for 25 cycles. After completion of PCR, the amplified DNA fragments were separated and collected by agarose gel electrophoresis.
- p35SSXG was used. In order to link the transcription factor gene sequence and the repressor domain sequence, this vector was cut with SmaI, and a PCR amplified fragment encoding the above transcription factor was inserted, and p35SSXG (At1g56650), p35SSXG (At5g24520), p35SSXG (At1g71030 ) was produced. P35SSXG (At1g71030) was inserted with a PCR amplified fragment using At1g71030 amplification forward primer 1 and At1g71030 amplification reverse primer 1.
- p35SOXG was inserted into the cleavage site with SmaI to prepare p35SOXG (At1g71030).
- pBCKH was used as a binary vector for gene transfer into plants by Agrobacterium.
- This vector is obtained by incorporating the cassette of the Gateway vector conversion system (Invitrogen) into the HindIII site of pBIG (Hygr) (Nucleic Acids Res. 18, 203 (1990)).
- this vector and p35SSXG (At1g56650), p35SSXG (At5g24520), p35SSXG (At1g71030) or p35SOXG (At1g71030) are mixed and assembled using GATEWAY LR clonase (Invitrogen). A replacement reaction was performed.
- pBCKH-p35SSXG (At1g56650), pBCKH-p35SSXG (At5g24520), pBCKH-p35SSXG (At1g71030) and pBCKH-p35SOXG (At1g71030) were prepared.
- Arabidopsis thaliana (Colombia) was used as a plant into which improved transcription factors were introduced.
- the gene transfer method was in accordance with Transformation of Arabidopsis thaliana by vacuum infiltration. However, in order to infect, no vacuum treatment was carried out, but only immersion in Agrobacterium solution.
- the improved transcription factor expression vectors pBCKH-p35SSXG (At1g56650), pBCKH-p35SSXG (At5g24520), pBCKH-p35SSXG (At1g71030) and pBCKH-p35SOXG (At1g71030) were transformed into the soil bacterium Agrobacterium tumefaciens strain p5890 It was introduced into the (Gmr) (koncz and Schell 1986) strain by electroporation.
- the introduced bacteria were cultured in a 1 liter YEP medium containing antibiotics (kanamycin (Km) 50 ⁇ g / ml, gentamicin (Gm) 25 ⁇ g / ml, rifampicillin (Rif) 50 ⁇ g / ml) until OD600 was 1.
- the cells are collected from the culture solution and contain 1 liter of infection medium (Infiltration medium, 1 liter, 2.2 g MS salt, 1X B5 vitamins, 50 g sucrose, 0.5 g MES, 0.044 ⁇ M benzylaminopurine, amino400 ⁇ l Silwet PH 5.7) Suspended in cocoon.
- Seed seeds (T1 seeds) were sterilized with 50% bleach and 0.02% Triton X-100 solution for 7 minutes, rinsed three times with sterile water, and sterilized hygromycin selective medium (4.3g / l4.3MS salts, 0.5% sucrose, 0.5 g / l MES, pH 5.7, 0.8% agar, 30mg / l hygromycin, 250 mg / l Vancomycin).
- T1 plants Ten transformed plants (T1 plants) grown on the hygromycin plate were selected for each improved transcription gene and transplanted to a 50 mm diameter pot containing vermiculite mixed soil. This was cultivated at 22 ° C., 16 hours light period, 8 hours dark period, and light intensity of about 60-80 ⁇ E / cm 2 to obtain seeds (T2 seeds). The skin color of the obtained T2 seeds was light brown or yellow, while the wild strain was dark brown.
- Dye synthesis pathway-deficient strain Moreover, in this example, the fat and oil content contained in seeds collected from the pigment synthesis pathway-deficient strain was also measured.
- a pigment synthesis pathway-deficient strain tt4 (NASC stock No. N85) (reference: Plant J., 8, 659-671, 1995), tt5 (NASC stock No. N86), tt6 (NASC (stock No. N87) (reference: Plant Physiol., 111, 339-345, 1996) and ⁇ CHS (NASC stock No. N520583)) were obtained from NASC (The Nottingham Arabidopsis Stock Centre).
- tt4, tt5, and tt6 were prepared from Arabidopsis thaliana, Ler strain, and ⁇ CHS was prepared from Arabidopsis thaliana, Col-0 strain. This was sterilized with 50% bleach and 0.02% Triton X-100 solution for 7 minutes, rinsed three times with sterile water, and the medium (4.3 g / l MS salts, 0.5% sucrose, 0.5 g / l MES, pH 5.7 , 0.8% agar). The plant body vermiculite mixed soil grown on the plate was transplanted to a pot having a diameter of 50 mm.
- T2 seeds with improved transcription factors or transcription factors introduced T2 seeds (At1g56650-SRDX, At5g24520-SRDX, At1g71030-SRDX) introduced with one of two improved transcription factor genes and improved transcription coupling factor genes and transcription Oil content analysis of T2 seed (At1g71030) and wild strains (Col-0, Ler) into which the factor was introduced was performed.
- T2 seed At1g71030
- Col-0, Ler wild strains into which the factor was introduced was performed.
- MARAN-23 Resonance Instruments Ltd., UK
- H-NMR Analysis software RI-NMR Ver. 2.0.
- a calibration curve was prepared using olive oil as the standard substance for fats and oils, and the fat content (wt%) in the seeds was determined.
- the fat content increase rate of each line is 30.2% for T2 seed (At1g56650-SRDX), 12.3% for T2 seed (At5g24520-SRDX), and T2 seed (At1g71030-SRDX) was 12.2% and T2 seed (At1g71030) was 2.3% (FIG. 1).
- ⁇ CHS was 8.9% for the Col-0 strain
- tt4, tt5, and tt6 were 4.7%, 8.8%, and 11.1% for the Ler strain, respectively (FIG. 2).
- the fat and oil content per seed weight of the plant introduced with the chimeric gene of transcription factor At1g56650, transcription coupling factor At5g24520, and transcription factor At1g71030 with the addition of the repressor domain It was found to be a very effective plant body in terms of fat and oil content per weight and excellent in fat and oil production.
- the fat content per seed weight of the plant introduced with At1g71030 having expression promoting activity was slightly increased compared with the fat content per weight of the plant grown at the same time, but the increase rate suppressed the expression promoting activity. It was about 1/5 of the increase rate of fat content per weight of the plant seed which introduced At1g71030.
- At1g71030 encodes a protein having a single MYB-like domain (AtMybL2) and overexpresses this gene with the CaMV35S promoter, indicating a trait that lacks leaves, stems, and trichomes. This is thought to be due to the suppression of the expression of the GL2 gene required for trichome formation (reference: DNA Res., 9, 31-34, 2002). It has been reported that the fat and oil content of seeds is increased by 8% by disrupting the GL2 gene (reference: Plant Mol Biol. 2006, 60,: 377-87, 2006).
- AtMybL2 protein has a transcriptional repressor consisting of 6 amino acids in its carboxy terminal region, and is an overexpression plant of the gene encoding AtMybL2 with an overexpression plant of AtMybL2 gene and a transcriptional repressor known as EAR-motif, In either case, the synthesis of anthocyanin precursor was suppressed (reference: 18TH INTERNATIONAL CONFERENCE ON ARABIDOPSIS RESEARCH, TAIR accession Publication: 501721814).
- At1g71030 overexpressing T2 seeds was 2.3%, whereas that of At1g71030 overexpressing T2 seeds with a repressor domain increased significantly by 12.2%.
- the increase in fat content at the time of GL2 gene disruption was significantly higher than 8%. From these results, it is considered that At1g71030 with repressor domain added acted on the oil synthesis and storage process of seeds through unknown pathways other than GL2, and increased the oil content.
- seed coat color is an important phenotype for predicting oil content in not only conventional breeding methods by crossing but also molecular breeding methods by gene transfer method and gene disruption method.
- the integrated values of R value, G value and B value are at least 2.88 times higher than the wild type. It was. As described above, it has become possible to measure the seed coat color quantitatively using the image data of the seed and to evaluate the amount of oil and fat in the seed very simply and quickly.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Genetics & Genomics (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Molecular Biology (AREA)
- Microbiology (AREA)
- Biophysics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Cell Biology (AREA)
- Biomedical Technology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Botany (AREA)
- General Chemical & Material Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Physics & Mathematics (AREA)
- Nutrition Science (AREA)
- Plant Pathology (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Peptides Or Proteins (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
Description
Plant Physiology (1997) Vol. 11, pp. 75-81 Plant Physiology (2001), Vol. 126, pp. 861-874 Plant J. (2004) 40, 575-585
(b)配列番号4に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、転写促進活性を有するタンパク質
(c)配列番号3に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされ転写促進活性を有するタンパク質
ここで上記機能性ペプチドとしては、次に示す式(1)~(8)を挙げることができる。
(但し、式中、X1は0~10個のアミノ酸残基を示し、X2はAsn又はGluを示し、X3は少なくとも6個のアミノ酸残基を示す。)
(2)Y1-Phe-Asp-Leu-Asn-Y2-Y3
(但し、式中、Y1は0~10個のアミノ酸残基を示し、Y2はPhe又はIleを示し、Y3は少なくとも6個のアミノ酸残基を示す。)
(3)Z1-Asp-Leu-Z2-Leu-Arg-Leu-Z3
(但し、式中、Z1はLeu、Asp-Leu又はLeu-Asp-Leuを示し、Z2はGlu、Gln又はAspを示し、Z3は0~10個のアミノ酸残基を示す。)
(4)Asp-Leu-Z4-Leu-Arg-Leu
(但し、式中、Z4はGlu、Gln又はAspを示す。)
(5)α1-Leu-β1-Leu-γ1-Leu
(6)α1-Leu-β1-Leu-γ2-Leu
(7)α1-Leu-β2-Leu-Arg-Leu
(8)α2-Leu-β1-Leu-Arg-Leu
(但し、式(5)~(8)中、α1はAsp、Asn、Glu、Gln、Thr又はSerを示し、α2はAsn、Glu、Gln、Thr又はSerを示し、β1はAsp、Gln、Asn、Arg、Glu、Thr、Ser又はHisを示し、β2はAsn、Arg、Thr、Ser又はHisを示し、γ1はArg、Gln、Asn、Thr、Ser、His、Lys又はAspを示し、γ2はGln、Asn、Thr、Ser、His、Lys又はAspを示す。)
また、本発明に係る植物体を用いた物質の製造方法は、上述した本発明に係る植物体から、生産性が向上した物質を分離及び回収する工程を含むものである。ここで、上記物質としては油脂を挙げることができる。
(但し、式中、X1は0~10個のアミノ酸残基を示し、X2はAsn又はGluを示し、X3は少なくとも6個のアミノ酸残基を示す。)
(2)Y1-Phe-Asp-Leu-Asn-Y2-Y3
(但し、式中、Y1は0~10個のアミノ酸残基を示し、Y2はPhe又はIleを示し、Y3は少なくとも6個のアミノ酸残基を示す。)
(3)Z1-Asp-Leu-Z2-Leu-Arg-Leu-Z3
(但し、式中、Z1はLeu、Asp-Leu又はLeu-Asp-Leuを示し、Z2はGlu、Gln又はAspを示し、Z3は0~10個のアミノ酸残基を示す。)
(4)Asp-Leu-Z4-Leu-Arg-Leu
(但し、式中、Z4はGlu、Gln又はAspを示す。)
(5)α1-Leu-β1-Leu-γ1-Leu
(6)α1-Leu-β1-Leu-γ2-Leu
(7)α1-Leu-β2-Leu-Arg-Leu
(8)α2-Leu-β1-Leu-Arg-Leu
(但し、式(5)~(8)中、α1はAsp、Asn、Glu、Gln、Thr又はSerを示し、α2はAsn、Glu、Gln、Thr又はSerを示し、β1はAsp、Gln、Asn、Arg、Glu、Thr、Ser又はHisを示し、β2はAsn、Arg、Thr、Ser又はHisを示し、γ1はArg、Gln、Asn、Thr、Ser、His、Lys又はAspを示し、γ2はGln、Asn、Thr、Ser、His、Lys又はAspを示す。)
式(1)の転写抑制転換ペプチド
上記式(1)の転写抑制転換ペプチドにおいては、上記X1で表されるアミノ酸残基の数は0~10個の範囲内であればよい。また、X1で表されるアミノ酸残基を構成する具体的なアミノ酸の種類は特に限定されるものではなく、どのようなものであってもよい。このX1で表されるアミノ酸残基は、式(1)の転写抑制転換ペプチドを合成するときの容易さからみれば、できるだけ短いほうがよい。具体的にX1で表されるアミノ酸残基は、5個以下であることが好ましい。
上記式(2)の転写抑制転換ペプチドにおいては、上記式(1)の転写抑制転換ペプチドのX1と同様、上記Y1で表されるアミノ酸残基の数は0~10個の範囲内であればよい。また、Y1で表されるアミノ酸残基を構成する具体的なアミノ酸の種類は特に限定されるものではなく、どのようなものであってもよい。具体的にY1で表されるアミノ酸残基は、5個以下であることが好ましい。
上記式(3)の転写抑制転換ペプチドにおいては、上記Z1で表されるアミノ酸残基は、1~3個の範囲内でLeuを含むものとなっている。アミノ酸1個の場合は、Leuであり、アミノ酸2個の場合は、Asp-Leuとなっており、アミノ酸3個の場合はLeu-Asp-Leuとなっている。
上記式(4)の転写抑制転換ペプチドは、6個のアミノ酸残基からなるヘキサマー(6mer)である。なお、上記式(4)の転写抑制転換ペプチドにおいてZ4で表されるアミノ酸残基がGluの場合のアミノ酸配列は、シロイヌナズナSUPERMANタンパク質(SUPタンパク質)の196~201番目のアミノ酸配列に相当している。
発現ベクター構築工程は、上述した転写因子や転写共役因子をコードする遺伝子と転写抑制転換ポリヌクレオチドと、プロモーターとを含む組換え発現ベクターを構築する工程であれば特に限定されるものではない。組換え発現ベクターの母体となるベクターとしては、従来公知の種々のベクターを用いることができる。例えば、プラスミド、ファージ、またはコスミド等を用いることができ、導入される植物細胞や導入方法に応じて適宜選択することができる。具体的には、例えば、pBR322、pBR325、pUC19、pUC119、pBluescript、pBluescriptSK、pBI系のベクター等を挙げることができる。特に、植物体へのベクターの導入法がアグロバクテリウムを用いる方法である場合には、pBI系のバイナリーベクターを用いることが好ましい。pBI系のバイナリーベクターとしては、具体的には、例えば、pBIG、pBIN19、pBI101、pBI121、pBI221等を挙げることができる。
本発明において行われる形質転換工程は、上述した融合遺伝子を発現させるように、上述した組換え発現ベクターを用いて植物細胞に導入する工程である。組換え発現ベクターを用いて植物細胞に導入する方法(形質転換方法)は特に限定されるものではなく、植物細胞に応じた適切な従来公知の方法を用いることができる。具体的には、例えば、アグロバクテリウムを用いる方法や直接植物細胞に導入する方法を用いることができる。アグロバクテリウムを用いる方法としては、例えば、Bechtold, E., Ellis, J. and Pelletier, G. (1993) In Planta Agrobacterium-mediated gene transfer by infiltration of adult Arabidopsis plants. C.R. Acad. Sci. Paris Sci. Vie, 316, 1194-1199. あるいは、Zyprian E, Kado Cl, Agrobacterium-mediated plant transformation by novel mini-T vectors in conjunction with a high-copy vir region helper plasmid. Plant Molecular Biology, 1990, 15(2), 245-256.に記載された方法を用いることができる。
本発明に係る植物体の生産方法においては、上記形質転換工程が含まれていればよく、さらに上記組換え発現ベクターを用いた形質転換用DNAの構築工程が含まれていてもよいが、さらに他の工程が含まれていてもよい。具体的には、形質転換後の植物体から適切な形質転換体を選抜する選抜工程等を挙げることができる。
また、本発明では、特定の表現型を示す植物体から採取した種子において油脂含有量が有意に向上しているといった新規知見を見いだした。具体的には、参考文献(Plant J. 1995 Nov;8(5):659-71.)に開示された4種類の色素合成経路欠損株(tt4、tt5、tt6及びΔCHS)から採取した種子は、野生型と比較して種子における油脂含量が有意に向上している。すなわち、本発明に係る植物由来油脂の製造方法は、カルコンシンターゼ遺伝子、カルコンイソメラーゼ遺伝子及びフラボン-3-ヒドラーゼ遺伝子からなる群から選ばれる少なくとも1の遺伝子の機能を欠損した植物体から採取した種子から油脂成分を回収する工程を含むものである。なお、上記参考文献に開示されたtt4株及びΔCHSはカルコンシンターゼ遺伝子を欠損した株であり、tt5株はカルコンイソメラーゼ遺伝子を欠損した株であり、tt6株はフラボン-3-ヒドラーゼ遺伝子を欠損した株である。
ウルシ科:ハゼノキ(Rhus succedanea)、カシューナットノキ(Anacardium occidentale)、ウルシ(Toxicodendron vernicifluum)、マンゴー(Mangifera indica)、ピスタチオ(Pistacia vera)
ウリ科:カボチャ(Cucurbita maxima、Cucurbita moschata、Cucurbita pepo)、キュウリ(Cucumis sativus)、カラスウリ(Trichosanthes cucumeroides)、ヒョウタン(Lagenaria siceraria var. gourda)
バラ科:アーモンド(Amygdalus communis)、バラ(Rosa)、イチゴ(Fragaria)、サクラ(Prunus)、リンゴ(Malus pumila var. domestica)など。
イネ科:トウモロコシ(Zea mays)、イネ(Oryza sativa)、オオムギ(Hordeum vulgare)、コムギ(Triticum aestivum)、タケ(Phyllostachys)、サトウキビ(Saccharum officinarum)など。
上述したように、本発明では、色素合成経路欠損株(参考文献:Plant J. 1995 Nov;8(5):659-71.)から採取した種子において、野生型と比較して油脂含有量が有意に向上しているといった新規知見を見いだした。色素合成経路欠損株は、色素合成系に関与する遺伝子の機能が欠損した変異株であって、野生株と比較して種皮色が淡色(野生型と比較してより白色)であるという表現型を示す。上記参考文献に開示されたtt4株及びΔCHSはカルコンシンターゼ遺伝子を欠損した株であり、tt5株はカルコンイソメラーゼ遺伝子を欠損した株であり、tt6株はフラボン-3-ヒドラーゼ遺伝子を欠損した株である。これら遺伝子を欠損した変異株においては、色素の合成不全により種皮色がより白色となる。このため、スクリーニング対象の植物から種子を採取し、採取した種子の種皮色を確認すると、当該植物における色素合成経路による色素合成能が判断できるとともに、採取した種子に含まれる種子含量を高精度に推定することができる。
本実施例では、シロイヌナズナにおける転写共役因子At5g24520及び転写因子At1g71030について、それぞれリプレッサードメイン配列を付加したキメラタンパク質(融合タンパク質)を植物体において発現させ、当該植物体から採取した種子における油脂含有量を測定した。また、比較のため転写因子At1g56650についても、同様にしてキメラタンパク質(融合タンパク質)を植物体において発現させ、種子における油脂含有量を測定した。
シロイヌナズナのcDNAライブラリーより、以下に記載するプライマーを用いて、At1g71030の終始コドンを除くコード領域のDNA断片並びに終止コドンを含むコード領域のDNA断片、At5g24520の終始コドンを除くコード領域のDNA断片及びAt1g56650の終始コドンを除くコード領域のDNAをPCRにより増幅した。PCR条件は94℃1分、47℃2分、伸長反応74℃1分を25サイクル行なった。PCR終了後、増幅されたDNA断片をアガローズゲル電気泳動により分離、回収した。
gATGAACAAAACCCGCCTTCGTGCTCTCTC(配列番号11)
・At1g71030増幅用リバースプライマー1
TCGGAATAGAAGAAGCGTTTCTTGACCTGT(配列番号12)
・At1g71030増幅用フォワードプライマー2
gATGAACAAAACCCGCCTTCGTGCTCTCTC(配列番号13)
・At1g71030増幅用リバースプライマー2(配列番号14)
TCATCGGAATAGAAGAAGCGTTTCTTGACC
・At1g56650増幅用フォワードプライマー
GATGGAGGGTTCGTCCAAAGGGC(配列番号15)
・At1g56650増幅用リバースプライマー
ATCAAATTTCACAGTCTCTCCATCG(配列番号16)
・At5g24520増幅用フォワードプライマー
gATGGATAATTCAGCTCCAGATTCGTTATC(配列番号17)
・At5g24520増幅用リバースプライマー
AACTCTAAGGAGCTGCATTTTGTTAGCAAA(配列番号18)
融合遺伝子の作製
上記DNA断片がコードする転写因子遺伝子の3'末端にリプレッサードメイン配列を付加するために、CaMV35Sプロモーターの下流にSmaIサイトとリプレッサードメイン(アミノ酸配列:GLDLDLELRLGFA)配列を有するベクターであるp35SSXGを用いた。転写因子遺伝子配列とリプレッサードメイン配列を連結するために、本ベクターをSmaIで切断し、上記の転写因子をコードするPCR増幅断片を挿入し、p35SSXG(At1g56650)とp35SSXG(At5g24520)、 p35SSXG(At1g71030)を作製した。 なおp35SSXG(At1g71030)はAt1g71030増幅用フォワードプライマー1及びAt1g71030増幅用リバースプライマー1を用いたPCR増幅断片を挿入した。また、At1g71030増幅用フォワードプライマー2及びAt1g71030増幅用リバースプライマー2を用いたPCR増幅断片を、リプレッサードメインを付加せずに発現するために、CaMV35Sプロモーターの下流にSmaIサイト配列を有するベクターである、p35SOXGをSmaIで切断部位に挿入し、p35SOXG(At1g71030)を作製した。
アグロバクテリウムにより植物に遺伝子導入を行なうためのバイナリーベクターとしてはpBCKHを用いた。本ベクターはpBIG(Hygr)(Nucleic Acids Res. 18, 203 (1990))のHindIIIサイトにGatewayベクターコンバージョンシステム(Invitrogen)のカセットを組み込んだものである。このベクターに改良型転写因子遺伝子を組み込むために、本ベクターと、p35SSXG(At1g56650)、p35SSXG(At5g24520)、p35SSXG(At1g71030)またはp35SOXG(At1g71030)を混合し、GATEWAY LR clonase (Invitrogen)を用いて組換え反応を行った。その結果、pBCKH-p35SSXG(At1g56650)、pBCKH-p35SSXG(At5g24520)、pBCKH-p35SSXG(At1g71030)及びpBCKH-p35SOXG(At1g71030)を作製した。
改良型転写因子を導入する植物にはシロイヌナズナ(Arabidopsis thaliana, Columbia )を用いた。遺伝子導入法は、Transformation of Arabidopsis thaliana by vacuum infiltration に従った。ただし、感染させるのに減圧処理は行なわず、アグロバクテリウム菌液に浸すだけとした。具体的には、改良型転写因子発現ベクター pBCKH-p35SSXG(At1g56650)、pBCKH-p35SSXG(At5g24520)、pBCKH-p35SSXG(At1g71030)及びpBCKH-p35SOXG(At1g71030)を、土壌細菌Agrobacterium tumefaciens strain GV3101 (C58C1Rifr) pMP90 (Gmr)(koncz and Schell 1986)株にエレクトロポレーション法で導入した。
また、本実施例では、色素合成経路欠損株から採取した種子に含まれる油脂含有量も測定した。本実施例では、具体的に色素合成経路欠損株tt4(NASC stock No. N85) (参考文献:Plant J., 8, 659-671, 1995)、tt5(NASC stock No. N86)、tt6(NASC stock No. N87) (参考文献:Plant Physiol., 111, 339-345, 1996)、ΔCHS(NASC stock No. N520583))についてはNASC(The Nottingham Arabidopsis Stock Centre)より入手した。tt4、tt5、tt6はArabidopsis thaliana, Ler株より作製され、ΔCHSはArabidopsis thaliana, Col-0株より作製された。これをを50%ブリーチ、0.02%Triton X-100溶液で7分間滅菌した後、滅菌水で3回リンスし、培地(4.3g/l MS salts, 0.5 % sucrose, 0.5 g/l MES, pH 5.7, 0.8 % agar)に播種した。上記プレートで生育する植物体バーミキュライト混合土を入れた直径50mmのポットに移植した。これを22℃、16時間明期8時間暗期、光強度約50~60μE/cm2(tt4, tt5, tt6, WT(Ler))または、光強度約40μE/cm2(ΔCHS、WT(Col-o))で栽培し種子を得た。得られた種子の表皮色は、野生株が濃い茶色であるのに対して、どの系統も薄茶色もしくは黄色であった。
2種類の改良型転写因子遺伝子及び改良型転写共役因子遺伝子のいずれかを導入したT2種子(At1g56650-SRDX、At5g24520-SRDX、At1g71030-SRDX)および転写因子を導入したT2種子(At1g71030)およびおよび野生株(Col-0、Ler)の油脂含量分析を行なった。油脂の定量分析はMARAN-23 (ResonanceInsturuments Ltd., UK) H-NMRと、解析ソフトRI-NMR Ver. 2.0を用い、2~10mgのシロイヌナズナ種子を測定した。油脂の標準物質にはオリーブオイルを用いて検量線を作製し、種子中の油脂含量(重量%)を求めた。
4種類の色素合成経路欠損株種子(tt4、tt5、tt6、ΔCHS)およびおよび野生株(Col-0、Ler)の油脂含量分析を行なった。油脂の定量分析はMARAN-23(ResonanceInsturuments Ltd., UK) H-NMRと、解析ソフトRI-NMR Ver. 2.0を用い、2~10mgのシロイヌナズナ種子を測定した。油脂の標準物質にはオリーブオイルを用いて検量線を作製し、種子中の油脂含量(重量%)を求めた。
以上の結果から、リプレッサードメインを付加した転写因子At1g56650、転写共役因子At5g24520、転写因子At1g71030それぞれのキメラ遺伝子を導入した植物体の種子の重量あたり油脂含量は、同時に栽培した野生株の重量あたり油脂含量に比べ優れており、油脂生産において非常に有効な植物体であることが判明した。一方で発現促進活性を持つAt1g71030を導入した植物体の種子の重量あたり油脂含量は、同時に栽培した植物体の重量あたり油脂含量とくらべ若干増加していたが、その増加率は発現促進活性を抑制したAt1g71030を導入した植物体種子の重量あたり油脂含量の増加率の1/5程度であった。At1g71030は、シングルMYB様のドメインを持つタンパク質(AtMybL2)をコードし、この遺伝子をCaMV35Sプロモーターで過剰発現することにより、葉、茎、萼のトライコームを欠失する形質を示す。これは、トライコームの形成に必要なGL2遺伝子の発現が抑制されることによると考えられる(参考文献:DNA Res., 9, 31-34, 2002)。GL2遺伝子を破壊することにより、種子の油脂含量が8%増加することが報告されている(参考文献:Plant Mol Biol. 2006 , 60, :377-87, 2006)。
Claims (28)
- 配列番号4に示すアミノ酸配列からなるタンパク質を含む転写因子ファミリーに属する転写因子と、任意の転写因子を転写抑制因子に転換する機能性ペプチドとを融合させたキメラタンパク質を発現させた植物体。
- 上記転写因子の転写促進活性が抑制されていることを特徴とする請求項1記載の植物体。
- 上記キメラタンパク質が転写抑制因子活性をもつことを特徴とする請求項1記載の植物体。
- 上記転写因子が、以下の(a)~(c)のいずれかのタンパク質であることを特徴とする請求項1記載の植物体。
(a)配列番号4に示すアミノ酸配列を含むタンパク質
(b)配列番号4に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、転写促進活性を有するタンパク質
(c)配列番号3に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされ転写促進活性を有するタンパク質 - 上記機能性ペプチドが、次に示す式(1)~(8)
(1)X1-Leu-Asp-Leu-X2-Leu-X3
(但し、式中、X1は0~10個のアミノ酸残基を示し、X2はAsn又はGluを示し、X3は少なくとも6個のアミノ酸残基を示す。)
(2)Y1-Phe-Asp-Leu-Asn-Y2-Y3
(但し、式中、Y1は0~10個のアミノ酸残基を示し、Y2はPhe又はIleを示し、Y3は少なくとも6個のアミノ酸残基を示す。)
(3)Z1-Asp-Leu-Z2-Leu-Arg-Leu-Z3
(但し、式中、Z1はLeu、Asp-Leu又はLeu-Asp-Leuを示し、Z2はGlu、Gln又はAspを示し、Z3は0~10個のアミノ酸残基を示す。)
(4)Asp-Leu-Z4-Leu-Arg-Leu
(但し、式中、Z4はGlu、Gln又はAspを示す。)
(5)α1-Leu-β1-Leu-γ1-Leu
(6)α1-Leu-β1-Leu-γ2-Leu
(7)α1-Leu-β2-Leu-Arg-Leu
(8)α2-Leu-β1-Leu-Arg-Leu
(但し、式(5)~(8)中、α1はAsp、Asn、Glu、Gln、Thr又はSerを示し、α2はAsn、Glu、Gln、Thr又はSerを示し、β1はAsp、Gln、Asn、Arg、Glu、Thr、Ser又はHisを示し、β2はAsn、Arg、Thr、Ser又はHisを示し、γ1はArg、Gln、Asn、Thr、Ser、His、Lys又はAspを示し、γ2はGln、Asn、Thr、Ser、His、Lys又はAspを示す。)
のいずれかで表されるアミノ酸配列を有するものであることを特徴とする請求項1記載の植物体。 - 油脂生産性が有意に向上したことを特徴とする請求項1乃至5いずれか一項記載の植物体。
- 特定の組織中の油脂含量が有意に向上したことを特徴とする請求項1乃至5いずれか一項記載の植物体。
- 特定の組織中が種子であることを特徴とする請求項7記載の植物体。
- 被子植物であることを特徴とする請求項1乃至8いずれか一項記載の植物体。
- 双子葉植物であることを特徴とする請求項1乃至8いずれか一項記載の植物体。
- アブラナ科植物であることを特徴とする請求項1乃至8いずれか一項記載の植物体。
- シロイヌナズナであることを特徴とする請求項1乃至8いずれか一項記載の植物体。
- 請求項1乃至12いずれか一項記載の植物体から、生産性が向上した物質を分離及び回収する工程を含む、植物体を用いた物質の製造方法。
- 上記物質は油脂であることを特徴とする請求項13記載の植物体を用いた物質の製造方法。
- 配列番号4に示すアミノ酸配列からなるタンパク質を含む転写因子ファミリーに属する転写因子と、任意の転写因子を転写抑制因子に転換する機能性ペプチドとを融合させたキメラタンパク質。
- 上記転写因子が以下の(a)~(c)のいずれかのタンパク質であることを特徴とする請求項15記載のキメラタンパク質。
(a)配列番号4に示すアミノ酸配列を含むタンパク質
(b)配列番号4に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、転写促進活性を有するタンパク質
(c)配列番号3に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされ転写促進活性を有するタンパク質 - 上記機能性ペプチドが、次に示す式(1)~(8)
(1)X1-Leu-Asp-Leu-X2-Leu-X3
(但し、式中、X1は0~10個のアミノ酸残基を示し、X2はAsn又はGluを示し、X3は少なくとも6個のアミノ酸残基を示す。)
(2)Y1-Phe-Asp-Leu-Asn-Y2-Y3
(但し、式中、Y1は0~10個のアミノ酸残基を示し、Y2はPhe又はIleを示し、Y3は少なくとも6個のアミノ酸残基を示す。)
(3)Z1-Asp-Leu-Z2-Leu-Arg-Leu-Z3
(但し、式中、Z1はLeu、Asp-Leu又はLeu-Asp-Leuを示し、Z2はGlu、Gln又はAspを示し、Z3は0~10個のアミノ酸残基を示す。)
(4)Asp-Leu-Z4-Leu-Arg-Leu
(但し、式中、Z4はGlu、Gln又はAspを示す。)
(5)α1-Leu-β1-Leu-γ1-Leu
(6)α1-Leu-β1-Leu-γ2-Leu
(7)α1-Leu-β2-Leu-Arg-Leu
(8)α2-Leu-β1-Leu-Arg-Leu
(但し、式(5)~(8)中、α1はAsp、Asn、Glu、Gln、Thr又はSerを示し、α2はAsn、Glu、Gln、Thr又はSerを示し、β1はAsp、Gln、Asn、Arg、Glu、Thr、Ser又はHisを示し、β2はAsn、Arg、Thr、Ser又はHisを示し、γ1はArg、Gln、Asn、Thr、Ser、His、Lys又はAspを示し、γ2はGln、Asn、Thr、Ser、His、Lys又はAspを示す。)
のいずれかで表されるアミノ酸配列を有するものであることを特徴とする請求項15記載のキメラタンパク質。 - 請求項15乃至17いずれか一項記載のキメラタンパク質をコードする遺伝子。
- 請求項18記載の遺伝子を含む発現ベクター。
- 請求項18記載の遺伝子を含む形質転換体。
- カルコンシンターゼ遺伝子の機能を欠損した植物体から採取した種子から油脂成分を回収する工程を含む、植物由来油脂の製造方法。
- 上記カルコンシンターゼ遺伝子が、以下の(a)~(c)のいずれかのタンパク質をコードする遺伝子であることを特徴とする請求項21記載の植物由来油脂の製造方法。
(a)配列番号6に示すアミノ酸配列を含むタンパク質
(b)配列番号6に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、カルコンシンターゼ活性を有するタンパク質
(c)配列番号5に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされカルコンシンターゼ活性を有するタンパク質 - カルコンイソメラーゼ遺伝子の機能を欠損した植物体から採取した種子から油脂成分を回収する工程を含む、植物由来油脂の製造方法。
- 上記カルコンシンターゼ遺伝子が、以下の(a)~(c)のいずれかのタンパク質をコードする遺伝子であることを特徴とする請求項23記載の植物由来油脂の製造方法。
(a)配列番号8に示すアミノ酸配列を含むタンパク質
(b)配列番号8に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、カルコンイソメラーゼ活性を有するタンパク質
(c)配列番号7に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされカルコンイソメラーゼ活性を有するタンパク質 - フラボン-3-ヒドラーゼ遺伝子の機能を欠損した植物体から採取した種子から油脂成分を回収する工程を含む、植物由来油脂の製造方法。
- 上記フラボン-3-ヒドラーゼ遺伝子が、以下の(a)~(c)のいずれかのタンパク質をコードする遺伝子であることを特徴とする請求項25記載の植物由来油脂の製造方法。
(a)配列番号10に示すアミノ酸配列を含むタンパク質
(b)配列番号10に示すアミノ酸配列において1又は複数個のアミノ酸が欠失、置換、付加又は挿入されたアミノ酸配列を含み、フラボン-3-ヒドラーゼ活性を有するタンパク質
(c)配列番号9に示す塩基配列の相補的な塩基配列からなるポリヌクレオチドに対してストリンジェントな条件下においてハイブリダイズするポリヌクレオチドによってコードされフラボン-3-ヒドラーゼ活性を有するタンパク質 - 種子内の油脂量を評価する対象となる植物体から種子を採取する工程と、
採取した種子の種皮色を観察し、より白色である場合には種子内の油脂量が高いと判定する工程とを含む、油脂量が向上した植物体のスクリーニング方法。 - 上記評価対象の植物体は、転写因子と任意の転写因子を転写抑制因子に転換する機能性ペプチドとを融合させたキメラタンパク質を発現する植物体又は遺伝子機能欠損植物体であることを特徴とする請求項27記載のスクリーニング方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980116011.3A CN102016032B (zh) | 2008-03-04 | 2009-03-03 | 使植物的油脂增产的基因及其利用方法 |
AU2009220650A AU2009220650B2 (en) | 2008-03-04 | 2009-03-03 | Gene that increases production of plant fat-and-oil and method for using the same |
US12/921,060 US9045786B2 (en) | 2008-03-04 | 2009-03-03 | Gene that increases production of plant fat-and-oil and method for using the same |
CA2717727A CA2717727C (en) | 2008-03-04 | 2009-03-03 | Gene that increases production of plant fat-and-oil and method for using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-054008 | 2008-03-04 | ||
JP2008054008A JP5299886B2 (ja) | 2008-03-04 | 2008-03-04 | 植物の油脂を増産させる遺伝子及びその利用方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009110466A1 true WO2009110466A1 (ja) | 2009-09-11 |
Family
ID=41056020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/053960 WO2009110466A1 (ja) | 2008-03-04 | 2009-03-03 | 植物の油脂を増産させる遺伝子及びその利用方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9045786B2 (ja) |
JP (1) | JP5299886B2 (ja) |
CN (1) | CN102016032B (ja) |
AU (1) | AU2009220650B2 (ja) |
CA (1) | CA2717727C (ja) |
WO (1) | WO2009110466A1 (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2230309B1 (en) | 2007-12-05 | 2016-03-09 | Toyota Jidosha Kabushiki Kaisha | Gene capable of increasing the production of oil-and-fat in plant, and use thereof |
EP2666860B1 (en) | 2007-12-05 | 2018-09-19 | Toyota Jidosha Kabushiki Kaisha | Genes that increase plant oil and method for using the same |
JP5847991B2 (ja) | 2009-06-04 | 2016-01-27 | トヨタ自動車株式会社 | 種子における物質生産性を向上させる遺伝子及びその利用方法 |
JP5718554B2 (ja) | 2009-06-04 | 2015-05-13 | トヨタ自動車株式会社 | 植物の植物重量を増産させる遺伝子及びその利用方法 |
JP5519192B2 (ja) | 2009-06-04 | 2014-06-11 | トヨタ自動車株式会社 | 種子のタンパク質含量を増産させる遺伝子及びその利用方法 |
BR122019021594B1 (pt) * | 2009-10-30 | 2021-10-05 | Agresearch Limited | Oleosina modificada célula hospedeira, corpo oleoso e seu método de produção, emulsão, ração animal, e método para produção de uma planta que acumula mais óleo que uma planta controle adequada |
BR112014015921A2 (pt) * | 2011-12-27 | 2021-05-25 | Commonwealth Scientific And Industrial Research Organisation | processos para produzir lipídeos |
CN104341519B (zh) * | 2013-07-31 | 2017-05-17 | 中国农业科学院作物科学研究所 | 水稻转录因子Os01g45090.1基因CDS序列的应用 |
US10988599B2 (en) * | 2018-08-11 | 2021-04-27 | Kaien Yang | Method of producing plant biomass-based bioplastic |
CN109517812A (zh) * | 2018-12-18 | 2019-03-26 | 浙江万里学院 | 杜鹃花查尔酮合成酶RsCHS蛋白及其编码基因 |
CN111122579A (zh) * | 2020-01-17 | 2020-05-08 | 中国农业科学院都市农业研究所 | 一种生菜叶片黄酮总量测定方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003055903A1 (fr) * | 2001-12-26 | 2003-07-10 | National Institute Of Advanced Industrial Science And Technology | Gene et peptide regulateurs de transcription |
JP2005027654A (ja) * | 2003-06-20 | 2005-02-03 | Japan Science & Technology Agency | 転写因子を転写抑制因子に変換するペプチド及びこれをコードするポリヌクレオチド、並びにその利用 |
JP2005204657A (ja) * | 2003-12-24 | 2005-08-04 | Japan Science & Technology Agency | タンニン含量が低減された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
US20060107345A1 (en) * | 2003-09-30 | 2006-05-18 | Nickolai Alexandrov | Sequence-determined DNA fragments and corresponding polypeptides encoded thereby |
WO2006056701A1 (fr) * | 2004-11-26 | 2006-06-01 | Genoplante-Valor | Methode d'adressage d'acides nucleiques vers des plastes |
Family Cites Families (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS602023B2 (ja) | 1982-02-03 | 1985-01-18 | 菊正宗酒造株式会社 | 米の蛋白質の抽出方法 |
JP2622725B2 (ja) | 1988-07-25 | 1997-06-18 | 東亜医用電子株式会社 | 胃組織の腺腔を抽出するための画像処理方法 |
WO1993018643A1 (en) | 1992-03-24 | 1993-09-30 | Rice Breeding Research Laboratories | Process for reducing seed storage proteins and process for transforming plants |
JPH0690766A (ja) | 1992-09-09 | 1994-04-05 | Mitsui Giyousai Shokubutsu Bio Kenkyusho:Kk | アブラナのホスホエノールピルビン酸 カルボキシラーゼ遺伝子 |
JP2706888B2 (ja) | 1993-01-25 | 1998-01-28 | 新潟県 | 乳酸菌を利用した米の処理法及びその米を利用した加工食品並びに低タンパク質米飯の製造方法 |
JP2557312B2 (ja) | 1993-04-23 | 1996-11-27 | 亀田製菓株式会社 | 低蛋白質、低カリウム、低リン米の製造方法 |
JP3289043B2 (ja) | 1993-10-21 | 2002-06-04 | 株式会社アレルゲンフリー・テクノロジー研究所 | アレルゲン低減化米の製造方法 |
JPH09182A (ja) | 1995-06-23 | 1997-01-07 | Toyo Suisan Kaisha Ltd | 炊飯用低タンパク米の製造方法 |
JPH0965840A (ja) | 1995-08-29 | 1997-03-11 | Asahi Chem Ind Co Ltd | 低タンパク質米の製造方法 |
US5783393A (en) | 1996-01-29 | 1998-07-21 | Agritope, Inc. | Plant tissue/stage specific promoters for regulated expression of transgenes in plants |
JPH09313059A (ja) | 1996-02-01 | 1997-12-09 | Mitsubishi Corp | 植物種子の貯蔵脂質含量を増加させる方法 |
US5914449A (en) | 1996-02-01 | 1999-06-22 | Mitsubishi Corporation | Method for increasing storage lipid content in plant seed |
US6476294B1 (en) | 1998-07-24 | 2002-11-05 | Calgene Llc | Plant phosphatidic acid phosphatases |
US6717034B2 (en) | 2001-03-30 | 2004-04-06 | Mendel Biotechnology, Inc. | Method for modifying plant biomass |
US7238860B2 (en) | 2001-04-18 | 2007-07-03 | Mendel Biotechnology, Inc. | Yield-related polynucleotides and polypeptides in plants |
US7663025B2 (en) | 1999-03-23 | 2010-02-16 | Mendel Biotechnology, Inc. | Plant Transcriptional Regulators |
US7858848B2 (en) | 1999-11-17 | 2010-12-28 | Mendel Biotechnology Inc. | Transcription factors for increasing yield |
US20030101481A1 (en) | 1998-09-22 | 2003-05-29 | James Zhang | Plant gene sequences I |
US7345217B2 (en) | 1998-09-22 | 2008-03-18 | Mendel Biotechnology, Inc. | Polynucleotides and polypeptides in plants |
JP2001059842A (ja) | 1999-08-25 | 2001-03-06 | Nec Corp | 病理診断装置 |
WO2001036444A1 (en) | 1999-11-17 | 2001-05-25 | Mendel Biotechnology, Inc. | Plant developmental genes |
WO2001064022A2 (en) | 2000-03-01 | 2001-09-07 | The Regents Of The University Of California | Leafy cotyledon1 genes and their uses |
JP3409079B2 (ja) | 2000-03-27 | 2003-05-19 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP3421740B2 (ja) | 2000-03-27 | 2003-06-30 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP3407033B2 (ja) | 2000-03-27 | 2003-05-19 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP3407034B2 (ja) | 2000-03-27 | 2003-05-19 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP3407036B2 (ja) | 2000-04-11 | 2003-05-19 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP3407035B2 (ja) | 2000-04-11 | 2003-05-19 | 独立行政法人産業技術総合研究所 | 遺伝子の転写を抑制する機能を有するペプチド |
JP4253420B2 (ja) | 2000-05-30 | 2009-04-15 | 株式会社Adeka | アレルゲン低減化且つ低タンパク質化穀類及びその製造方法 |
JP3656104B2 (ja) | 2001-03-13 | 2005-06-08 | 国立大学法人 奈良先端科学技術大学院大学 | 植物において脂肪酸合成を促進させる方法 |
AU2002324783A1 (en) * | 2001-08-09 | 2003-02-24 | Mendel Biotechnology, Inc. | Stress-related polynucleotides and polypeptides in plants |
JP3995211B2 (ja) | 2001-12-26 | 2007-10-24 | 独立行政法人産業技術総合研究所 | 転写抑制遺伝子及びペプチド |
US20040006797A1 (en) | 2002-04-05 | 2004-01-08 | Lifang Shi | MYB transcription factors and uses for crop improvement |
PT1546336E (pt) | 2002-09-18 | 2012-04-09 | Mendel Biotechnology Inc | Polinucleótidos e polipéptidos em plantas |
US7268276B2 (en) | 2002-11-18 | 2007-09-11 | Monsanto Technology Llc | Production of increased oil and protein in plants by the disruption of the phenylpropanoid pathway |
EP1577384A4 (en) | 2002-12-20 | 2007-04-18 | Inc Admin Agency Naro | PLANT WITH REDUCED PROTEIN CONTENT IN SEED AND METHOD FOR THE PRODUCTION AND USE THEREOF |
JP2004286666A (ja) | 2003-03-24 | 2004-10-14 | Olympus Corp | 病理診断支援装置および病理診断支援プログラム |
JP2005013214A (ja) | 2003-06-02 | 2005-01-20 | Japan Science & Technology Agency | 植物を宿主とする発現ベクターを構築するための構築用ベクター及びその利用方法 |
JP4452876B2 (ja) | 2003-08-06 | 2010-04-21 | 国立大学法人 香川大学 | LKP2部分cDNAを用いた遺伝子導入による植物体の種子収量、乾燥重量の制御 |
US7989676B2 (en) | 2006-08-31 | 2011-08-02 | Ceres, Inc. | Nucleotide sequences and corresponding polypeptides conferring modulated plant characteristics |
EP1682668B1 (en) | 2003-11-13 | 2011-03-16 | Mendel Biotechnology, Inc. | Plant transcriptional regulators |
JP4437936B2 (ja) | 2004-03-26 | 2010-03-24 | 独立行政法人科学技術振興機構 | 葯の裂開が抑制された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
WO2005065446A1 (ja) | 2004-01-07 | 2005-07-21 | Japan Science And Technology Agency | 不稔性植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2005192483A (ja) | 2004-01-07 | 2005-07-21 | Japan Science & Technology Agency | 植物の雄性不稔体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006042729A (ja) | 2004-08-06 | 2006-02-16 | Japan Science & Technology Agency | 八重咲き植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006034218A (ja) * | 2004-07-29 | 2006-02-09 | Japan Science & Technology Agency | 葯の裂開が抑制された植物体の生産方法2およびこれを用いて得られる植物体、並びにその利用 |
JP2005204573A (ja) | 2004-01-22 | 2005-08-04 | Japan Science & Technology Agency | 葉の形状が改変された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
WO2005085467A1 (ja) | 2004-03-05 | 2005-09-15 | Japan Science And Technology Agency | タンパク質複合体検出方法、およびタンパク質複合体検出キット |
US20060041961A1 (en) | 2004-03-25 | 2006-02-23 | Abad Mark S | Genes and uses for pant improvement |
JP2005295878A (ja) | 2004-04-09 | 2005-10-27 | Japan Science & Technology Agency | 花芽形成遅延植物体の生産方法、及びこれを用いて得られる植物体、並びにその利用 |
JP2005295879A (ja) | 2004-04-09 | 2005-10-27 | Japan Science & Technology Agency | 花の形態が改変された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2005352571A (ja) | 2004-06-08 | 2005-12-22 | Olympus Corp | 画像処理装置 |
WO2005120215A1 (en) | 2004-06-11 | 2005-12-22 | Plant Research International B.V. | The shine clade of transcription factors and their use |
JP2006006248A (ja) | 2004-06-28 | 2006-01-12 | Japan Science & Technology Agency | 葉の形態形成が制御された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006020607A (ja) | 2004-07-09 | 2006-01-26 | Japan Science & Technology Agency | 葉の形態が改変された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006042730A (ja) | 2004-08-06 | 2006-02-16 | Japan Science & Technology Agency | 単子葉植物の雄性不稔体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006055125A (ja) | 2004-08-23 | 2006-03-02 | Japan Science & Technology Agency | 遺伝子の転写抑制機能を有する新規ペプチドおよびこれをコードするポリヌクレオチド、並びにその利用 |
JP2006101827A (ja) | 2004-10-08 | 2006-04-20 | Japan Science & Technology Agency | 雄性不稔形質転換植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP2006134188A (ja) | 2004-11-08 | 2006-05-25 | Japan Science & Technology Agency | オリゴヌクレオチドデータ管理装置、オリゴヌクレオチドデータ管理システム、オリゴヌクレオチドデータ管理プログラムおよび記録媒体 |
JP2006280242A (ja) | 2005-03-31 | 2006-10-19 | Japan Science & Technology Agency | 完全不稔性植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
JP5083792B2 (ja) | 2005-04-28 | 2012-11-28 | 独立行政法人科学技術振興機構 | 植物体の脱分化方法及びこれを用いて得られるカルス、並びにその利用 |
WO2006133461A1 (en) | 2005-06-08 | 2006-12-14 | Ceres Inc. | Identification of terpenoid-biosynthesis related regulatory protein-regulatory region associations |
WO2007102346A1 (ja) | 2006-02-28 | 2007-09-13 | Japan Science And Technology Agency | グルカン量を低減させることなくリグニン量およびセルロース量を低減させた植物体およびその生産方法、並びにこれらの利用 |
WO2007117693A2 (en) | 2006-04-07 | 2007-10-18 | Ceres, Inc. | Regulatory protein-regulatory region associations related to alkaloid biosynthesis |
JP2009296886A (ja) | 2006-10-03 | 2009-12-24 | Japan Science & Technology Agency | 有用形質を有する植物をスクリーニングするためのツールおよびその利用 |
JP4947589B2 (ja) | 2007-06-27 | 2012-06-06 | Kddi株式会社 | 類似画像検索装置 |
US8362325B2 (en) | 2007-10-03 | 2013-01-29 | Ceres, Inc. | Nucleotide sequences and corresponding polypeptides conferring modulated plant characteristics |
JP5151403B2 (ja) | 2007-11-06 | 2013-02-27 | 日本電気株式会社 | 低分化癌検出モジュール、これを備えた病理画像診断支援装置、プログラムおよび記録媒体 |
EP2230309B1 (en) | 2007-12-05 | 2016-03-09 | Toyota Jidosha Kabushiki Kaisha | Gene capable of increasing the production of oil-and-fat in plant, and use thereof |
EP2666860B1 (en) | 2007-12-05 | 2018-09-19 | Toyota Jidosha Kabushiki Kaisha | Genes that increase plant oil and method for using the same |
JP5365011B2 (ja) | 2008-01-29 | 2013-12-11 | 日本電気株式会社 | 病理診断支援装置、病理診断支援方法、およびプログラム |
JP2009210409A (ja) | 2008-03-04 | 2009-09-17 | Kddi Corp | 画像領域分割方法および装置 |
US20110209244A1 (en) | 2008-09-29 | 2011-08-25 | National Institute Of Advanced Industrial Science And Technology | Method for production of plant imparted with stress tolerance and use thereof |
WO2010041423A1 (ja) | 2008-10-09 | 2010-04-15 | 日本電気株式会社 | 病理組織診断支援システム、病理組織診断支援プログラム、病理組織診断支援方法 |
JP5718554B2 (ja) | 2009-06-04 | 2015-05-13 | トヨタ自動車株式会社 | 植物の植物重量を増産させる遺伝子及びその利用方法 |
JP5847991B2 (ja) | 2009-06-04 | 2016-01-27 | トヨタ自動車株式会社 | 種子における物質生産性を向上させる遺伝子及びその利用方法 |
JP5519192B2 (ja) | 2009-06-04 | 2014-06-11 | トヨタ自動車株式会社 | 種子のタンパク質含量を増産させる遺伝子及びその利用方法 |
-
2008
- 2008-03-04 JP JP2008054008A patent/JP5299886B2/ja active Active
-
2009
- 2009-03-03 CN CN200980116011.3A patent/CN102016032B/zh not_active Expired - Fee Related
- 2009-03-03 WO PCT/JP2009/053960 patent/WO2009110466A1/ja active Application Filing
- 2009-03-03 CA CA2717727A patent/CA2717727C/en active Active
- 2009-03-03 AU AU2009220650A patent/AU2009220650B2/en not_active Ceased
- 2009-03-03 US US12/921,060 patent/US9045786B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003055903A1 (fr) * | 2001-12-26 | 2003-07-10 | National Institute Of Advanced Industrial Science And Technology | Gene et peptide regulateurs de transcription |
JP2005027654A (ja) * | 2003-06-20 | 2005-02-03 | Japan Science & Technology Agency | 転写因子を転写抑制因子に変換するペプチド及びこれをコードするポリヌクレオチド、並びにその利用 |
US20060107345A1 (en) * | 2003-09-30 | 2006-05-18 | Nickolai Alexandrov | Sequence-determined DNA fragments and corresponding polypeptides encoded thereby |
JP2005204657A (ja) * | 2003-12-24 | 2005-08-04 | Japan Science & Technology Agency | タンニン含量が低減された植物体の生産方法およびこれを用いて得られる植物体、並びにその利用 |
WO2006056701A1 (fr) * | 2004-11-26 | 2006-06-01 | Genoplante-Valor | Methode d'adressage d'acides nucleiques vers des plastes |
Non-Patent Citations (2)
Title |
---|
SAWA, S.: "Overexpression of the AtmybL2 gene represses trichome development in Arabidopsis", DNA RES, vol. 9, no. 2, 2002, pages 31 - 34 * |
SHEN, B. ET AL.: "The homeobox gene GLABRA2 affects seed oil content in Arabidopsis", PLANT MOL BIOL, vol. 60, no. 3, 2006, pages 377 - 387 * |
Also Published As
Publication number | Publication date |
---|---|
CN102016032B (zh) | 2014-05-07 |
CN102016032A (zh) | 2011-04-13 |
JP5299886B2 (ja) | 2013-09-25 |
AU2009220650A1 (en) | 2009-09-11 |
US20110081691A1 (en) | 2011-04-07 |
CA2717727C (en) | 2015-04-21 |
US9045786B2 (en) | 2015-06-02 |
AU2009220650B2 (en) | 2012-11-15 |
JP2009207421A (ja) | 2009-09-17 |
CA2717727A1 (en) | 2009-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5299886B2 (ja) | 植物の油脂を増産させる遺伝子及びその利用方法 | |
JP5847991B2 (ja) | 種子における物質生産性を向上させる遺伝子及びその利用方法 | |
US9018446B2 (en) | Genes that increase plant oil and method for using the same | |
CA2989127C (en) | Genes that increase plant oil and method for using the same | |
JP5718554B2 (ja) | 植物の植物重量を増産させる遺伝子及びその利用方法 | |
JP5910704B2 (ja) | 種子における物質生産性を向上させる遺伝子及びその利用方法 | |
JP2013247955A (ja) | 植物の油脂を増産させる遺伝子及びその利用方法 | |
JP5910702B2 (ja) | 種子における物質生産性を向上させる遺伝子及びその利用方法 | |
JP5920440B2 (ja) | 種子における物質生産性を向上させる遺伝子及びその利用方法 | |
JP5910703B2 (ja) | 種子における物質生産性を向上させる遺伝子及びその利用方法 | |
JP5686977B2 (ja) | 植物の油脂生産性を増大させる遺伝子及びその利用方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980116011.3 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09717019 Country of ref document: EP Kind code of ref document: A1 |
|
DPE1 | Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2717727 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009220650 Country of ref document: AU |
|
ENP | Entry into the national phase |
Ref document number: 2009220650 Country of ref document: AU Date of ref document: 20090303 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12921060 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09717019 Country of ref document: EP Kind code of ref document: A1 |