CN109439670B - A kind of preparation method of the gene for improved seed size and quality and application - Google Patents
A kind of preparation method of the gene for improved seed size and quality and application Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of gene for improved seed size and quality and applications.Present invention finds the gene M EE45 and BnaC04g36220D of being capable of improved seed size and quality.The DNA sequence dna of full length fragment of the present invention comprising said gene constructs over-express vector, then by MEE45 gene overexpression vector introduction agrobacterium strains, and infects arabidopsis floral with agrobacterium-mediated transformation, establishes transgenic arabidopsis strain.Transgenic line is compared by inventor after further cultivating with WT lines, and discovery is using the resulting transgenic line of the gene with foliage organ becomes larger, seed becomes larger, mass of 1000 kernel increases and fat content increases isophenous.The gene overexpression is applied to the Main Agronomic Characters such as production, the size of improved seed, mass of 1000 kernel and fat content, for improving the yield and quality of crop, there is important economic value and social benefit.
Description
Technical field
The present invention relates to plant genetic engineerings and technical field of cell biology, and in particular to one kind is big for improved seed
The preparation method of small and quality gene and application.
Background technique
The seed size of plant be mark one of most important feature of yield (Alonso-Blanco C et al, PNAS,
1999,96:4710-4717;Moles AT et al, PNAS, 2005,102:10540-10544).In angiosperm, seed is logical
It often include embryo, endosperm and kind skin, they are respectively from the development of fertilized eggs, the central cell being fertilized and integument.The nearly more than ten years
Come, although people obtain certain progress, the regulation seed size of discovery in terms of the molecular mechanism for understanding control seed size
Key gene and few.Following significant challenge is the further key gene for excavating regulation seed size, and is established perfect
Molecular regulation network, to use modern biotechnology (genomics correlative study, gene editing, protein science, metabolism group
With mathematics model foundation etc.) Crop Improvement provides important genetic resources.
Arabidopsis is a kind of crucifer, is widely used in Plant genetics, Developmental Biology and molecular biology
Research, it has also become a kind of typical model plant.MEE45 (MATERNAL EFFECT EMBRYO ARREST 45), is quasi-
Containing there are four the transcription factors of B3-domain in southern mustard.There is the research to other members of the gene family in the prior art, still
Its research for primarily focusing on generation of the genoid in plant somatocyte embryo.However, MEE45 and improved seed size and product
There is not been reported for the related functional analysis of matter.
Summary of the invention
For the above-mentioned prior art, the present invention is studied for a long period of time and is explored, it was found that being capable of improved seed size and quality
Gene M EE45 and BnaC04g36220D.The DNA sequence dna of full length fragment of the present invention comprising said gene, which constructs, to be overexpressed
Carrier then by MEE45 gene overexpression vector introduction agrobacterium strains, and infects arabidopsis floral with agrobacterium-mediated transformation,
Establish transgenic arabidopsis strain.Transgenic line is compared by inventor after further cultivating with WT lines, hair
Now using the resulting transgenic line of the gene with foliage organ becomes larger, seed becomes larger, mass of 1000 kernel increases and fat content increases
Isophenous.The gene overexpression is applied to the important agronomy such as production, the size of improved seed, mass of 1000 kernel and fat content
Shape has important economic value and social benefit for improving the yield and quality of crop.
Based on said gene, the first aspect of the present invention provides the gene for improved seed size and quality, is as follows
1) any gene in -4):
1) its nucleotide sequence is as shown in SEQ ID NO.1;
2) its nucleotide sequence is as shown in SEQ ID NO.3;
3) encoding gene for the albumen that the amino acid sequence shown in SEQ ID NO.2 forms;
4) encoding gene for the albumen that the amino acid sequence shown in SEQ ID NO.4 forms.
The second aspect of the present invention provides recombinant expression carrier, transgenic cell line or the gene work for carrying said gene
Journey bacterium.
Wherein, the recombinant expression carrier for carrying MEE45 gene is as shown in Figure 1;Carry the recombination of BnaC04g36220D gene
Expression vector is as shown in Figure 2.
Recombinant expression carrier, transgenic cell line or the genetic engineering bacterium of said gene are carried in improved seed size and product
Application in matter is also protection scope of the present invention.
In above-mentioned application, the improved seed size and quality include: that foliage organ becomes larger, seed becomes larger, mass of 1000 kernel becomes larger
Increase with fat content.
The third aspect of the present invention provides following a)-f) any one of described in DNA fragmentation in improved seed size and product
Application in matter;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
C) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation a) or b) limited
It is functionally of equal value with albumen shown in SEQ ID NO.2;
D) DNA fragmentation shown in SEQ ID NO.3;
E) DNA fragmentation of amino acid sequence shown in SEQ ID NO.4 is encoded;
F) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation d) or e) limited
It is functionally of equal value with albumen shown in SEQ ID NO.4.
In above-mentioned application, the improved seed size and quality include: that foliage organ becomes larger, seed becomes larger, mass of 1000 kernel becomes larger
Increase with fat content.
The fourth aspect of the present invention provides following 1) -6) any one of described in albumen in improved seed size and quality
In application;
1) amino acid sequence is albumen shown in SEQ ID NO.2;
2) by amino acid sequence shown in SEQ ID NO.2 by one, several or dozens of amino acid replacements, deletion
Or insertion obtain with albumen albumen with the same function shown in SEQ ID NO.2;
3) fusion protein that the N-terminal of the albumen shown in SEQ ID NO.2 and/or C-terminal connection label obtain;
4) amino acid sequence is albumen shown in SEQ ID NO.4;
5) by amino acid sequence shown in SEQ ID NO.4 by one, several or dozens of amino acid replacements, deletion
Or insertion obtain with albumen albumen with the same function shown in SEQ ID NO.4;
6) fusion protein that the N-terminal of the albumen shown in SEQ ID NO.4 and/or C-terminal connection label obtain.
In above-mentioned application, the improved seed size and quality include: that foliage organ becomes larger, seed becomes larger, mass of 1000 kernel becomes larger
Increase with fat content.
The fifth aspect of the present invention provides a kind of promotion seed and increases and/or the method for oil synthesis, including with as follows
A)-f) described in any item polynucleotides conversion plant and the step of express that the polynucleotides in the plant;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
C) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation a) or b) limited
It is functionally of equal value with albumen shown in SEQ ID NO.2;
D) DNA fragmentation shown in SEQ ID NO.3;
E) DNA fragmentation of amino acid sequence shown in SEQ ID NO.4 is encoded;
F) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation d) or e) limited
It is functionally of equal value with albumen shown in SEQ ID NO.4.
In agricultural production, it is sometimes desirable to fat content is reduced in vegetable seeds to obtain more favorable character, such as
In the soybean for production of albumen powder.Based on this, the sixth aspect of the present invention provides fat content in a kind of reduction seed
Method, include generate make in the seed and plant containing the described in any item polynucleotides of following a)-f) it is described more
The step of nucleotide expression is reduced or is not expressed;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
C) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation a) or b) limited
It is functionally of equal value with albumen shown in SEQ ID NO.2;
D) DNA fragmentation shown in SEQ ID NO.3;
E) DNA fragmentation of amino acid sequence shown in SEQ ID NO.4 is encoded;
F) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation d) or e) limited
It is functionally of equal value with albumen shown in SEQ ID NO.4;
Or include to generate the seed and containing as following 1) -4) any one of described in albumen plant in make
The step of protein active reduces or loses;
1) amino acid sequence is albumen shown in SEQ ID NO.2;
2) by amino acid sequence shown in SEQ ID NO.2 by one, several or dozens of amino acid replacements, deletion
Or insertion obtain with albumen albumen with the same function shown in SEQ ID NO.2;
3) amino acid sequence is albumen shown in SEQ ID NO.4;
4) by amino acid sequence shown in SEQ ID NO.4 by one, several or dozens of amino acid replacements, deletion
Or insertion obtain with albumen albumen with the same function shown in SEQ ID NO.4.
Preferably, the method for making the polynucleotides expression reduce or not express includes: mutation or the knockout multicore glycosides
All or part of sequence of acid;Or the expression of the polynucleotides is interfered using RNA interfering;Or use gene silencing system
Make the expression silencing of the polynucleotides.
The seventh aspect of the present invention provides a kind of method of genetically modified plants for cultivating seed size and quality-improving, is
The described in any item polynucleotides of following a)-f) are imported into purpose plant and obtain the transgenosis plant of seed size and quality-improving
Object;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
C) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation a) or b) limited
It is functionally of equal value with albumen shown in SEQ ID NO.2;
D) DNA fragmentation shown in SEQ ID NO.3;
E) DNA fragmentation of amino acid sequence shown in SEQ ID NO.4 is encoded;
F) DNA fragmentation has 75% or 75% or more identity, and the albumen encoded with DNA fragmentation d) or e) limited
It is functionally of equal value with albumen shown in SEQ ID NO.4.
At least one of in the above method, the seed size and quality-improving are following 1) -4):
1) seed of the genetically modified plants is greater than the purpose plant;
2) foliage organ of the genetically modified plants is greater than the purpose plant;
3) mass of 1000 kernel of the seed of the genetically modified plants is greater than the purpose plant;
4) fat content is greater than the purpose plant in the seed of the genetically modified plants.
Preferably, the purpose plant is dicotyledon or monocotyledon;The monocotyledon be selected from rice,
Wheat or corn;The dicotyledon is selected from arabidopsis, soybean, rape, peanut or sunflower.
Beneficial effects of the present invention:
The present invention provides a kind of gene for improved seed size and quality: arabidopsis transcription factor gene for the first time
The MEE45 and its homologous gene BnaC04g36220D in cabbage type rape, has using the resulting genetically modified plants of the gene
Foliage organ, which becomes larger, seed becomes larger, mass of 1000 kernel becomes larger increases isophenous with fat content.The gene is applied to production, improvement kind
The Main Agronomic Characters such as size, mass of 1000 kernel and the fat content of son have important warp for improving the yield and quality of crop
Ji value and social benefit.
Detailed description of the invention
Fig. 1: plant expression vector pMEE45::MEE45-GFP carrier structure figure.
Fig. 2: plant expression vector 35S::BnaC04g36220D carrier structure figure.
Fig. 3: wild type (WT), mee45 mutant (mee45), mee45 recovery-type (pMEE45::MEE45mee45) and
MEE45 is overexpressed in the comparison and wild type and mee45 mutant seeds of plant (pMEE45::MEE45) seed size and grain weight
The measurement of fat content.
Fig. 4: wild type, mee45 mutant, mee45 recovery-type and MEE45 are overexpressed the embryonic development of plant different times
Compare;
The reciprocal cross that Fig. 5: mee45 mutant and WT lines carry out Parent is tested;
The subcellular localization in ovule and embryo's expression pattern and albumen of Fig. 6: MEE45 gene;
Fig. 7: wild type, mee45 mutant and overexpression 35S::MEE45 seed Oil Content Analysis;
Fig. 8: it is overexpressed ratio of the cabbage type rape homologous gene BnaC04g36220D in mee45 mutant and wild type
Compared with.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
As background technology part is introduced, the key gene of the regulation seed size of existing report is simultaneously few.Future
Significant challenge be the further key gene for excavating regulation seed size.
The present inventor passes through long-term research and exploration, it was found that a kind of gene for improved seed size and quality,
The gene is arabidopsis transcription factor gene MEE45, which guards containing there are four from arabidopsis gene group, the gene
B3 structural domain belongs to LEC2 family, and as shown in SED ID NO.1, which is nucleotide sequence
1587bp;Amino acid sequence encodes 528 amino acid as shown in SED ID NO.2.With the overall length piece comprising the MEE45 gene
The DNA sequence dna of section constructs over-express vector, then by MEE45 gene overexpression vector introduction agrobacterium strains, and uses Agrobacterium
Mediated method infects arabidopsis floral, establishes transgenic arabidopsis strain.Inventor further cultivate after by transgenic line with
WT lines are compared, discovery using the resulting transgenic line of the gene have foliage organ becomes larger, seed becomes larger, thousand
Increase again and fat content increases isophenous.By the gene overexpression be applied to production, the size of improved seed, mass of 1000 kernel and
The Main Agronomic Characters such as fat content have important economic value and social benefit for improving the yield and quality of crop.
By phylogenetic analysis and tetraploid rice, the present invention also have found in cabbage type rape with MEE45 affiliation
Closer homology is up to 56% gene BnaC04g36220D, and the nucleotide sequence of the gene is as shown in SED ID NO.3, the base
Because overall length is 1530bp, amino acid sequence encodes 509 amino acid as shown in SED ID NO.4.Research finds to be overexpressed
BnaC04g36220D gene turns arabidopsis mee45 mutant, can restore the phenotype that mee45 seed becomes smaller;It is overexpressed
BnaC04g36220D gene turns arabidopsis wild type, and transgenic plant seed becomes larger.Therefore, BnaC04g36220D gene can also
To be used for improved seed size and quality.
MEE45 gene and BnaC04g36220D gene based on above-mentioned discovery, protection scope of the present invention further include with it is upper
The DNA fragmentation of two DNA homologs is stated, as long as egg shown in albumen and SEQ ID NO.2 or SEQ ID NO.4 that they are encoded
White function equivalence.It is as referred to herein to mean target " with the equivalence of protein function shown in SEQ ID NO.2 or SEQ ID NO.4 "
The encoded albumen of DNA fragmentation biological function and in terms of with SEQ ID NO.2 or SEQ in the present invention
Albumen shown in ID NO.4 is same or similar.The typical biology function of albumen shown in SEQ ID NO.2 or SEQ ID NO.4
Can be promote vegetable seeds increase, foliage organ increase, mass of 1000 kernel increase and seed in fat content improve.By raising SEQ ID
The expression quantity and/or activity of albumen shown in NO.2 or SEQ ID NO.4, can be in improved seed size and quality.
These include nucleotide sequence of the present invention with the DNA fragmentation of MEE45 gene and BnaC04g36220D DNA homolog
(SEQ ID NO.1, SEQ ID NO.3) corresponding allele, homologous gene, mutated gene and derivative gene;They are encoded
Albumen be similar to albumen shown in SEQ ID NO.2 or SEQ ID NO.4 of the present invention, or there are one, several or dozens ofs
Replacement, deletion or the insertion phenomenon of amino acid, belong to the content of present invention.
Those of ordinary skill in the art can easily adopt by known method, such as the side of directed evolution and point mutation
Method is mutated the nucleotide sequence of MEE45 gene and BnaC04g36220D gene of the invention.Those are by manually repairing
Decorations, have and the nucleotide sequence 75% or higher identity of MEE45 gene of the present invention and BnaC04g36220D gene
Nucleotide is derived from as long as protein function shown in the albumen and SEQ ID NO.2 or SEQ ID NO.4 of coding is of equal value
Nucleotide sequence of the invention and it is equal to sequence of the invention.
Term " identity " used herein refers to the sequence similarity with native sequence nucleic acid." identity " includes and this hair
Nucleotide sequence shown in bright SEQ ID NO.1, SEQ ID NO.3 and SEQ ID NO.5 have 75% or higher or 85% or
Higher or 90% or higher or 95% or higher identity nucleotide sequence.The equivalent rate of amino acid or nucleotide sequence can
(Altschul et al.1990.Journal of Molecular Biology 215:403- is measured using BLAST algorithm
410;Karlin and Altschul.1993.Proceedings of the National Academy of Sciences
90:5873-5877)。
Above-mentioned 75% or 75% or more identity can be 80%, 85%, 90% or 95% or more identity.
It in one embodiment of the invention, is from after fertilization three days silique genomes of the arabidopsis Col ecotype
Amplification obtains the gene, the specific steps of which are as follows:
(1) CTAB method extracts arabidopsis fruit genome;
(2) clone of MEE45 gene
Using genomic DNA as template, PCR amplification is carried out using following primer pair:
Upstream primer: 5'-TAGGATCCATGGCGCATCAACATTTCTTCT-3', as shown in SEQ ID NO.5;
Downstream primer: 5'-TAGGTACCTCATTTGATTTCTAGCTTCACCTT-3', as shown in SEQ ID NO.6;
Wherein drawing horizontal line part is I restriction enzyme site of BamH I and Kpn;
PCR amplification system is 4 μ L upstream primers (50pmol/ μ L), 4 μ L downstream primers (50pmol/ μ L), 10 μ L 10 ×
PCR buffer, 4 μ L dNTP mixed liquors (10mmol/L), 4 μ L EVO archaeal dna polymerases (5U), 2 μ L cDNA templates add
ddH2Total volume is supplemented to 50 μ L by O;
Amplification condition are as follows: 95 DEG C of initial denaturation 3min;95 DEG C of denaturation 15s, 56 DEG C of annealing 15s, 72 DEG C of extension 1min, circulation 32
It is secondary;72 DEG C of extension 7min.
4 μ L PCR products are taken to connect with pEasy-Blunt Simple Vector carrier, operating procedure is according to TransGen
Biotech Products pEasy-Blunt Simple Vector specification carries out.Then connection product converts Escherichia coli
DH5 α competent cell, the overnight incubation on the LB solid medium containing ampicillin (100mg/L).Picking white bacterium
It falls, the overnight incubation in the LB liquid medium containing ampicillin (100mg/L).Alkalinity extraction Plasmid DNA, digestion identification
After carry out sequencing.For amplified production through sequencing analysis, sequence shows that amplified production is MEE45 as shown in SEQ ID NO.1
Gene.
Also there is the research of other members of the gene family in the prior art, but it primarily focuses on the genoid in plant
The research of the generation of somatic embryo does not find that it has the function similar with the present invention, and inventor thinks this and the present invention
Gene and existing gene function have biggish difference related.
After obtaining above-mentioned target gene, inventor constructs plant expression vector pMEE45::MEE45-GFP using it,
The carrier is the MEE45 gene DNA fragment expanded using restriction enzyme BamH I and I digestion of Kpn, and is connected
It is obtained in PROK2 empty expression vector;Inventor further converts Agrobacterium using the carrier obtained.
Last inventor utilizes agrobacterium mediation converted arabidopsis floral, and finally screens and obtain resistant plant
Strain, and finally verifying finds the plant with foliage organ becomes larger, seed becomes larger (shown in Fig. 3) and fat content increases (Fig. 3 institute
Show) isophenous.The gene is applied to production, the Main Agronomic Characters such as size, mass of 1000 kernel and fat content of improved seed are used
In the yield and quality for improving crop, there is important economic value and social benefit.
In another embodiment of the present invention, the Cytological Basis that mee45 mutant and MEE45 are overexpressed is had studied,
Specific step is as follows:
(1) using clarifier by plant tissue it is transparent after observation photograph to mee45 mutant, MEE45 be overexpressed and it is wild
Ovule before type pollination, the embryogenesis after pollination carry out detailed comparisons' research (shown in Fig. 4), and research finds that mee45 is prominent
Variant ovule and embryo become smaller, and seed becomes smaller;Opposite overexpression plant pMEE45::MEE45 ovule and embryo become larger, and seed becomes
Greatly.
(2) reciprocal cross that mee45 mutant and WT lines carry out Parent is tested, observes the embryo of filial generation
Pearl, embryo and endosperm phenotype, analysis MEE45 whether pass through maternal tissue or zygote tissue modulation seed size development (Fig. 5 institute
Show), research shows that MEE45 is to control seed size by matrilinear inheritance.
In another embodiment of the invention, the expression pattern of MEE45 gene and the subcellular localization of albumen are had studied,
It is specific as follows:
PMEE45::MEE45-GFP fusion expression vector and transformed plant are constructed, the expression pattern of MEE45 albumen is carried out
It analyzes (shown in Fig. 6), research shows that MEE45 is expressed in ovule and embryo, station-keeping mode is nuclear location.
In another embodiment of the invention, MEE45 gene regulation fat content is studied, specific as follows:
Inventor has surveyed wild type Col, mutant mee45 and has been overexpressed the content of total grease in 35S::MEE45 seed,
It was found that the content of grease is reduced compared to wild type in mutant, and the content of grease is risen (Fig. 7 institute in being overexpressed
Show).
In another embodiment of the invention, the cabbage type rape homologous gene BnaC04g36220D of MEE45 is carried out
Research, specific as follows:
By phylogenetic analysis and tetraploid rice, have found closer same with MEE45 affiliation in cabbage type rape
The gene cloning is come out up to 56% gene BnaC04g36220D and turns arabidopsis mee45 mutant and wild type by source property, is observed
Whether the development (Fig. 8 shown in) of seed size is influenced, and research finds that being overexpressed BnaC04g36220D gene turns arabidopsis mee45
Mutant can restore the phenotype that mee45 seed becomes smaller;It is overexpressed BnaC04g36220D gene and turns arabidopsis wild type, turn base
Because plant seed becomes larger.We are also converting the cabbage type rape of the gene overexpression, observe after obtaining transgenic plant
The variation of the size and quality of seed.For its nucleotide sequence as shown in SED ID NO.3, which is 1530bp, amino
Acid sequence encodes 510 amino acid as shown in SED ID NO.4.
The gene is expanded from cabbage type rape 10 days seedling spire cDNA and is obtained, the specific steps of which are as follows:
1. the extraction and purifying of rape RNA
The synthesis of the first chain of 2.cDNA
The clone of 3.BnaC04g36220D gene
Using cDNA as template, PCR amplification is carried out using following primer pair:
Upstream primer: 5'-TAGGATCCATGGTGAACAAACGTTTCTTCAAGC-3', as shown in SEQ ID NO.7;
Downstream primer: 5'-TAGAGCTCTCATTCGGTCTCATGCTTTACCTT-3', as shown in SEQ ID NO.8;
Wherein drawing horizontal line part is I restriction enzyme site of BamH I and Sac;
PCR amplification system is 4 μ L upstream primers (50pmol/ μ L), 4 μ L downstream primers (50pmol/ μ L), 10 μ L 10 ×
PCR buffer, 4 μ L dNTP mixed liquors (10mmol/L), 4 μ L EVO archaeal dna polymerases (5U), 2 μ L cDNA templates add
ddH2Total volume is supplemented to 50 μ L by O;
Amplification condition are as follows: 95 DEG C of initial denaturation 3min;95 DEG C of denaturation 15s, 56 DEG C of annealing 15s, 72 DEG C of extension 1min, circulation 32
It is secondary;72 DEG C of extension 7min.
4 μ L PCR products are taken to connect with pEasy-Blunt Simple Vector carrier, operating procedure is according to TransGen
Biotech Products pEasy-Blunt Simple Vector specification carries out.Then connection product converts Escherichia coli
DH5 α competent cell, the overnight incubation on the LB solid medium containing ampicillin (100mg/L).Picking white bacterium
It falls, the overnight incubation in the LB liquid medium containing ampicillin (100mg/L).Alkalinity extraction Plasmid DNA, digestion identification
After carry out sequencing.For amplified production through sequencing analysis, sequence shows that amplified production is as shown in SEQ ID NO.3
BnaC04g36220D gene.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
Test material used in the embodiment of the present invention and comparative example is the test material of this field routine, can be passed through
Commercial channel is commercially available.The experimental method that detailed conditions are not specified is according to conventional methods or according to proposed by supplier
Operational manual carry out.
Embodiment 1, MEE45 and BnaC04g36220D gene cloning and plant expression vector construction
The extraction and purifying of 1.1 arabidopsis RNA
The fresh tender silique of arabidopsis children is ground in liquid nitrogen, and ground sample is moved into 15mL CTAB extracting solution rapidly
In (2% (W/V) CTAB, 2% (W/V) PVP, 100mM Tris-HCl (pH8.0), 25mM EDTA, 2.0M NaCl, 2% (W/
V) beta -mercaptoethanol, 0.5g/L spermidine), be vortexed concussion 30s immediately, in 65 DEG C of water-bath a moments, adds isometric with CTAB extracting solution
Chloroform: the mixture of isoamyl alcohol, wherein chloroform: the volume ratio of isoamyl alcohol is 24:1, and oscillation mixes;At room temperature 10000rpm from
The heart 15 minutes, supernatant was shifted into another clean pipe, is added and the isometric chloroform of supernatant: iso pentane alcohol mixture (volume
Than 24:1) standing is mixed, it repeats to extract once, 10000rpm is centrifuged 15 minutes at room temperature, and transfer water phase is into another centrifuge tube.
8M LiCl is added according to liquor capacity, makes the final concentration of 2M of LiCl, 4 DEG C of overnight precipitations (most 16 hours).4 DEG C are centrifuged 20 points
Clock removes supernatant, is rinsed and is precipitated with 500 μ L, 70% ethyl alcohol, with 500 μ L SSTE liquid (1.0M NaCl, 0.5% (W/V)
SDS, 10mM Tris-HCl (pH8.0), 1mM EDTA (pH8.0)) dissolution precipitating, it transfers the solution into 1.5mL centrifuge tube,
Isometric chloroform: iso pentane alcohol mixture (volume ratio 24:1) is added, then extracts primary.The second of 2 times of volumes is added in supernatant
Alcohol, -70 DEG C precipitate 2 hours for precipitating 30 minutes or -20 DEG C, and 4 DEG C of 12000rpm are centrifuged 20 minutes, DNA are precipitated, first with 400 μ L
70% ethyl alcohol rinsing precipitating adds 400 μ L, 100% ethyl alcohol rinsing precipitating, after drying precipitated, with 50 μ L DEPC ddH2O is molten
Solution precipitating.
It is required to ensure that RNA mass reaches sequencing, respectively using spectrophotometer and agarose gel electrophoresis detection purifying
RNA sample purity and concentration, moderate purity and concentration standard afterwards are as follows: RNA purity is that OD260/280 and OD260/230 exists
Within the scope of 1.8-2.0, RNA concentration is within the scope of 1.0-2.0 μ g/ μ L.
The synthesis of the first chain of 1.2cDNA
It is total that 1 μ L 50 μM of Oligo dT Primer and 15.5 μ L are sequentially added in the centrifuge tube of 0.2mL DEPC processing
RNA, 70 DEG C are denaturalized 6 minutes, rapid ice bath 10 minutes.2 μ L dNTP Mixture are sequentially added in above-mentioned centrifuge tube
(10mM), 5 μ L 5 × Primer Script Buffer, 0.5 μ L RNase Inhibitor (40U), 1 μ L Primer
Script RTase (200U), adds DEPC-H2O to 25 μ L.It is 25 DEG C, 10 minutes that program is run in PCR instrument;42 DEG C, 90 points
Clock;95 DEG C, 5 minutes.After EP (end of program), sample freezes for use in -80 DEG C.
1.3MEE45 the clone with BnaC04g36220D gene
Using the cDNA of reverse transcription as template, PCR amplification is carried out using following primer pair:
MEE45 carries out PCR amplification using genome as template, using following primer pair:
Upstream primer: 5'-TAGGATCCATGGCGCATCAACATTTCTTCT-3', as shown in SEQ ID NO.5;
Downstream primer: 5'-TAGGTACCTCATTTGATTTCTAGCTTCACCTT-3', as shown in SEQ ID NO.6;
Wherein drawing horizontal line part is I restriction enzyme site of BamH I and Kpn;
PCR amplification system is 4 μ L upstream primers (50pmol/ μ L), 4 μ L downstream primers (50pmol/ μ L), 10 μ L 10 ×
PCR buffer, 4 μ L dNTP mixed liquors (10mmol/L), 4 μ L EVO archaeal dna polymerases (5U), 2 μ L cDNA templates add
ddH2Total volume is supplemented to 50 μ L by O;
Amplification condition are as follows: 94 DEG C of initial denaturation 3min;95 DEG C of denaturation 15s, 56 DEG C of annealing 15s, 72 DEG C of extension 1min, circulation 32
It is secondary;72 DEG C of extension 7min.
4 μ L PCR products are taken to connect with pEasy-Blunt Simple Vector carrier, operating procedure is according to TransGen
Biotech Products pEasy-Blunt Simple Vector specification carries out.Then connection product converts Escherichia coli
DH5 α competent cell, the overnight incubation on the LB solid medium containing ampicillin (100mg/L).Picking white bacterium
It falls, the overnight incubation in the LB liquid medium containing ampicillin (100mg/L).Alkalinity extraction Plasmid DNA, digestion identification
After carry out sequencing.For amplified production through sequencing analysis, sequence shows that amplified production is MEE45 as shown in SEQ ID NO.1
Gene.
Cabbage type rape gene carries out PCR amplification using cDNA as template, using following primer pair:
Upstream primer: 5'-TAGGATCCATGGTGAACAAACGTTTCTTCAAGC-3', as shown in SEQ ID NO.7;
Downstream primer: 5'-TAGAGCTCTCATTCGGTCTCATGCTTTACCTT-3', as shown in SEQ ID NO.8;
Wherein drawing horizontal line part is I restriction enzyme site of BamH I and Sac;
PCR amplification system be 4 μ L upstream primers (50pmol/ μ L), 4 μ L downstream primers (50pmol/ μ L), 10 μ L10 ×
PCR buffer, 4 μ L dNTP mixed liquors (10mmol/L), 4 μ L EVO archaeal dna polymerases (5U), 2 μ L cDNA templates add
ddH2Total volume is supplemented to 50 μ L by O;
Amplification condition are as follows: 95 DEG C of denaturation 3min;95 DEG C of denaturation 15s, 56 DEG C of annealing 15s, 72 DEG C of extension 1min, circulation 32
It is secondary;72 DEG C of extension 7min.
4 μ L PCR products are taken to connect with pEasy-Blunt Simple Vector carrier, operating procedure is according to TransGen
Biotech Products pEasy-Blunt Simple Vector specification carries out.Then connection product converts Escherichia coli
DH5 α competent cell, the overnight incubation on the LB solid medium containing ampicillin (100mg/L).Picking white bacterium
It falls, the overnight incubation in the LB liquid medium containing ampicillin (100mg/L).Alkalinity extraction Plasmid DNA, digestion identification
After carry out sequencing.For amplified production through sequencing analysis, sequence shows that amplified production is as shown in SEQ ID NO.3
BnaC04g36220D gene.
The acquisition of 1.4 plant expression vector pMEE45::MEE45-GFP and 35S::BnaC04g36220D genes
MEE45DNA segment is cut with restriction enzyme BamH I and Kpn I.With restriction enzyme BamH I and Kpn I
II empty expression vector of PROK is cut, the two passes through electrophoresis detection and recycles target fragment.After connecting digestion using T4 ligase
Segment, operating procedure are carried out according to Fermentas Products T4DNA ligase specification.Then connection product converts large intestine
Bacillus DH5 α competent cell, the overnight incubation on the LB solid medium of (50mg/L) containing kanamycin.Picking white bacterium
It falls, the overnight incubation in the LB liquid medium containing spectinomycin (50mg/L).Alkalinity extraction Plasmid DNA simultaneously carries out digestion mirror
It is fixed.Digestion is identified correct expression vector pMEE45::MEE45-GFP conversion Agrobacterium GV3101 and obtained to be made for conversion
Agrobacterium strains.The present invention converts Agrobacterium using electric shocking method.
BnaC04g36220D DNA fragmentation is cut with restriction enzyme BamH I and Sac I.With restriction enzyme BamH
I and Sac I cuts II empty expression vector of PROK, and the two passes through electrophoresis detection and recycles target fragment.It is connected using T4 ligase
Segment after digestion, operating procedure are carried out according to Fermentas Products T4DNA ligase specification.Then connection product
Convert bacillus coli DH 5 alpha competent cell, the overnight incubation on the LB solid medium of (50mg/L) containing kanamycin.It chooses
Extracting waste bacterium colony, the overnight incubation in the LB liquid medium containing spectinomycin (50mg/L).Alkalinity extraction Plasmid DNA is gone forward side by side
Row digestion identification.Correct expression vector 35S::BnaC04g36220D conversion Agrobacterium GV3101 is identified into digestion and acquisition can
For converting the agrobacterium strains used.
Embodiment 2, the conversion of the arabidopsis floral of mediated by agriculture bacillus and the acquisition of resistant plant
Dip dyeing the previous day picking Agrobacterium (the Agrobacterium single colonie for carrying recombinant plasmid) be inoculated in containing 50mg/L card that
In the YEP culture medium of mycin, 28 DEG C, 220rpm shakes bacterium and stays overnight, and precipitates within second day and is resuspended early in the morning in pre- dip dyeing culture medium.So
Disseminate the arabidopsis floral tissue bloomed afterwards, inflorescence group, which is woven in dip dyeing liquid for shell, disseminates 15s, then dark culture for 24 hours, then
16h illumination 8h dark culturing grows into arabidopsis floral and grows into arabidopsis silique maturation, all seeds has finally been received, for sieving
Select positive plant.Because the plant resistance that II empty carrier of PROK has is to block that resistance, with the GM training containing that resistance of card
It supports base and screens seed, what can be survived is possible to design one end from gene for the sake of rigorous for positive plant and draw
Object designs other end primer from carrier framework, with this pair of of nested primers screening-gene group, can show that correct band
It is positive plant.
The nested primers sequence of pMEE45::MEE45-GFP and 35S::BnaC04g36220D positive plant is as follows:
MEE45 upstream primer: 5'-TAGGATCCATGGCGCATCAACATTTCTTCT-3', as shown in SEQ ID NO.9;
BnaC04g36220D upstream primer: 5'-TAGGATCCATGGTGAACAAACGTTTCTTCAAGC-3', such as SEQ
Shown in ID NO.10;
Downstream primer sequence: 5'-CAAGAGTCCACTATTAAAGAACGTGG-3', as shown in SEQ ID NO.11;(two
A gene can share).
The phenotypic analysis of embodiment 3, mutant and positive transgenic plant
The seed size of mutant and positive transgenic plant and WT lines maturation is measured, mass of 1000 kernel and length and width are counted
(Fig. 3);And it observes ovule and Seed development and measures the content of grease in seed.As seen from Figure 3, mee45 is mutated
Body seed becomes smaller compared to wild type seeds, and mass of 1000 kernel reduces;The opposite plant pMEE45::MEE45-GFP seed that is overexpressed becomes larger,
Mass of 1000 kernel increases.As seen from Figure 4, mee45 mutant ovule and embryo become smaller, and fat content reduces;It is opposite to be overexpressed
The ovule and embryo of pMEE45::MEE45-GFP plant become larger.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
SEQUENCE LISTING
<110>Shandong Agricultural University
<120>a kind of preparation method of gene for improved seed size and quality and application
<130> 2018
<160> 11
<170> PatentIn version 3.5
<210> 1
<211> 1587
<212> DNA
<213>MEE45 gene
<400> 1
atggcgcatc aacatttctt caagcctctt cttcctggct tccacgcctc cttgacaatt 60
cctgtagcct tcttcttgaa gtatatagaa ggaagatatg agcagaagac ggcgaagctg 120
agatcagacg cgtcaaagag aacttgggaa gtgaagatag atggccagag actcaccgac 180
ggttggaaag agtttgctgt ctcacatgat cttcgaatcg gtgacattgt tgttttcaga 240
caagagagtg acttggcttt ccatgtaaca ctgttgggac ctagttgttg tgggattcaa 300
tatggttcgt gttcagtcga aaagaacaac ctcggtgacg agaaaaagaa agtgaaggag 360
aatccaaatg gagaagcaga gtcttcttca cgagatccct cttgttttgt ggctaatgtt 420
gcgccttcga gtctacgtta tgacttgatg agatttccaa ggggttttgt gagggataat 480
ggtgtagtcg gatctggaga gattgttctg atgaatgaaa agggcagatc atggaatttt 540
aacttgagac aaaagccatc aaacggaaca gtttatgtta gaggagggtg ggtgagtttt 600
tgtgatgcca atgggcttaa agctggagat aactacactt tcaaactgat caaaagagca 660
ggaactcttg ttctacgttt gttacccaat gagccaaaag aggaagctaa tgaagtgtct 720
cttcccgaag aaccggaaag cgatgcagag cgcaaccttg aaaagattca aaggaaggag 780
aaagtgaaga agaatgtaac aagagaggca gagtcttctt cacaagatcc ctcttgtttt 840
gtggctaatg tctccccttc gagtctacgc tatgacacac tgtatcttcc aaagcgtttt 900
atgagggaaa atggtgtaga caaaagatgt ggagagatga ttctgattaa tgaaaaggga 960
aaatcatgga ctttagattt gaaagtaaag aaatcatccg gaacttctct catcaaacga 1020
ggatggagaa gtttctgtag tgccaatgga ctaagagctg gaagtatcat aactctcaaa 1080
ctgataaaga aaagagcaac tcttgttcta cgtttgatcc ccaacgagcc agaagaagct 1140
aatgaagtag tctctctttc gacagagcaa gaaagcgatg aagagagtat ccacgacgag 1200
aaaatctcaa gaagaaagtc tttactatcc gaaaaccgat ttgtgacatt aactctaaca 1260
ccttatacaa tccaaagttc tctactgaat gagaatcttt tgtgtgaatc tatgtttcag 1320
cgtcttccgg ttcctttcac gaggatgaat ggtatcaatg aagaaactaa aatgactctg 1380
ttggataaac atggtgtgaa gtggttaacg actctgcggt tcgaggacga caaaagaaaa 1440
agactacgaa tggtaggagg atggcaagga ttcatccaag ctaacgatgt gaaggcaaac 1500
gaatccatca tgttggaact gatttgggaa gaagaaacaa gttgcgtcct taagttctgc 1560
tccaaggtga agctagaaat caaatga 1587
<210> 2
<211> 528
<212> PRT
<213>MEE45 gene coded protein
<400> 2
Met Ala His Gln His Phe Phe Lys Pro Leu Leu Pro Gly Phe His Ala
1 5 10 15
Ser Leu Thr Ile Pro Val Ala Phe Phe Leu Lys Tyr Ile Glu Gly Arg
20 25 30
Tyr Glu Gln Lys Thr Ala Lys Leu Arg Ser Asp Ala Ser Lys Arg Thr
35 40 45
Trp Glu Val Lys Ile Asp Gly Gln Arg Leu Thr Asp Gly Trp Lys Glu
50 55 60
Phe Ala Val Ser His Asp Leu Arg Ile Gly Asp Ile Val Val Phe Arg
65 70 75 80
Gln Glu Ser Asp Leu Ala Phe His Val Thr Leu Leu Gly Pro Ser Cys
85 90 95
Cys Gly Ile Gln Tyr Gly Ser Cys Ser Val Glu Lys Asn Asn Leu Gly
100 105 110
Asp Glu Lys Lys Lys Val Lys Glu Asn Pro Asn Gly Glu Ala Glu Ser
115 120 125
Ser Ser Arg Asp Pro Ser Cys Phe Val Ala Asn Val Ala Pro Ser Ser
130 135 140
Leu Arg Tyr Asp Leu Met Arg Phe Pro Arg Gly Phe Val Arg Asp Asn
145 150 155 160
Gly Val Val Gly Ser Gly Glu Ile Val Leu Met Asn Glu Lys Gly Arg
165 170 175
Ser Trp Asn Phe Asn Leu Arg Gln Lys Pro Ser Asn Gly Thr Val Tyr
180 185 190
Val Arg Gly Gly Trp Val Ser Phe Cys Asp Ala Asn Gly Leu Lys Ala
195 200 205
Gly Asp Asn Tyr Thr Phe Lys Leu Ile Lys Arg Ala Gly Thr Leu Val
210 215 220
Leu Arg Leu Leu Pro Asn Glu Pro Lys Glu Glu Ala Asn Glu Val Ser
225 230 235 240
Leu Pro Glu Glu Pro Glu Ser Asp Ala Glu Arg Asn Leu Glu Lys Ile
245 250 255
Gln Arg Lys Glu Lys Val Lys Lys Asn Val Thr Arg Glu Ala Glu Ser
260 265 270
Ser Ser Gln Asp Pro Ser Cys Phe Val Ala Asn Val Ser Pro Ser Ser
275 280 285
Leu Arg Tyr Asp Thr Leu Tyr Leu Pro Lys Arg Phe Met Arg Glu Asn
290 295 300
Gly Val Asp Lys Arg Cys Gly Glu Met Ile Leu Ile Asn Glu Lys Gly
305 310 315 320
Lys Ser Trp Thr Leu Asp Leu Lys Val Lys Lys Ser Ser Gly Thr Ser
325 330 335
Leu Ile Lys Arg Gly Trp Arg Ser Phe Cys Ser Ala Asn Gly Leu Arg
340 345 350
Ala Gly Ser Ile Ile Thr Leu Lys Leu Ile Lys Lys Arg Ala Thr Leu
355 360 365
Val Leu Arg Leu Ile Pro Asn Glu Pro Glu Glu Ala Asn Glu Val Val
370 375 380
Ser Leu Ser Thr Glu Gln Glu Ser Asp Glu Glu Ser Ile His Asp Glu
385 390 395 400
Lys Ile Ser Arg Arg Lys Ser Leu Leu Ser Glu Asn Arg Phe Val Thr
405 410 415
Leu Thr Leu Thr Pro Tyr Thr Ile Gln Ser Ser Leu Leu Asn Glu Asn
420 425 430
Leu Leu Cys Glu Ser Met Phe Gln Arg Leu Pro Val Pro Phe Thr Arg
435 440 445
Met Asn Gly Ile Asn Glu Glu Thr Lys Met Thr Leu Leu Asp Lys His
450 455 460
Gly Val Lys Trp Leu Thr Thr Leu Arg Phe Glu Asp Asp Lys Arg Lys
465 470 475 480
Arg Leu Arg Met Val Gly Gly Trp Gln Gly Phe Ile Gln Ala Asn Asp
485 490 495
Val Lys Ala Asn Glu Ser Ile Met Leu Glu Leu Ile Trp Glu Glu Glu
500 505 510
Thr Ser Cys Val Leu Lys Phe Cys Ser Lys Val Lys Leu Glu Ile Lys
515 520 525
<210> 3
<211> 1530
<212> DNA
<213>BnaC04g36220D gene
<400> 3
atggtgaaca aacgtttctt caagcctctt cttcctggct tccacagcca cttgacaatt 60
cctgtagcct tcttcgtcaa gtatatagaa ggaaaaaacg agcaccatac gacgaagcta 120
agatcagacg cgtcaaagat aacctgggaa gtgaaaatag aagatggcca gaaactcact 180
gacggttgga aagagttcgc tcttgcacac gatcttcgta tcggcgacat tctcattttc 240
aagcaagaga aagacatggc tttccacgta acactcttgg gacccagtgg ctgtgagatt 300
caatatgagt cgtgttcaga agaagagaac aacttcggga atattccaaa gaagaagaat 360
tcaaaaagag aagcagagtc ttcttcacta gatccttctt gtttcttggc taatatctgg 420
ccttcgtcct tacgctatga ctcattgaac cttccaagga gttttgtgag ggcaaatggt 480
ctagagacaa gatgtggaag agagatcgtt ctgatcaatg aaaagggtaa atcatggact 540
ttggctttaa aacaaaagct atctggacct acttacatca gacgagggtg gagaagtttc 600
tgtattgcca atggtcttaa aactggaggc gtctacactt tcaaactaat caagagaggg 660
agagctccgg ttcttcgttt gtcctccaca gagtcagagt tagaagagag aaacatcgag 720
aagattcaga ggaacaaagc agagtcttcc tcactaaatc cctcttgttt tgtggctaat 780
atctcgcgtg caaccctacg ttatgacaca ctgggtcttc caatgaaatt ttcaagggaa 840
aatggtctag aggcaagatg tggagagatt gttctaatga atgaaaaggg tagatcgtgg 900
aagctaaatc tgaaacgaaa gagatcatgc ggaactatgt atatcacaca agggtggagg 960
agtttctgta gtgcaaatgg acttagagct ggaagttctt ccactttcaa actgatcaaa 1020
agaggaggaa ctctggctct acgtttgtca tctaaagaga ctgaagaaga agaagaagat 1080
tgctcattaa aagctaatga agtggagtct ctttccacag aaccagaaag cgatgaagag 1140
gggagccaag atgagaaaca aatcaagaag catagatcga catggaaagc ttcatcttca 1200
caatcccaaa accgatttgt gacacttact tttagacctt tcaatcttga aaagtattta 1260
ctgtttcttc ctttacgctt caccaggtgg cacggcatca atgaagaaac taaaatgaga 1320
ctgttggaca aaaacggtgt caagtggtct acggatctgc ggtctgggaa aactaatatt 1380
gataaaataa gattggtagg aggttggcaa gaattcttca aagctaactg tgtgaagcca 1440
ggtgaatcta tcattgtgaa gctgatatgg gatggagaca aaagttgtat cctcaagttc 1500
tgctctaagg taaagcatga gaccgaatga 1530
<210> 4
<211> 509
<212> PRT
<213>BnaC04g36220D gene coded protein
<400> 4
Met Val Asn Lys Arg Phe Phe Lys Pro Leu Leu Pro Gly Phe His Ser
1 5 10 15
His Leu Thr Ile Pro Val Ala Phe Phe Val Lys Tyr Ile Glu Gly Lys
20 25 30
Asn Glu His His Thr Thr Lys Leu Arg Ser Asp Ala Ser Lys Ile Thr
35 40 45
Trp Glu Val Lys Ile Glu Asp Gly Gln Lys Leu Thr Asp Gly Trp Lys
50 55 60
Glu Phe Ala Leu Ala His Asp Leu Arg Ile Gly Asp Ile Leu Ile Phe
65 70 75 80
Lys Gln Glu Lys Asp Met Ala Phe His Val Thr Leu Leu Gly Pro Ser
85 90 95
Gly Cys Glu Ile Gln Tyr Glu Ser Cys Ser Glu Glu Glu Asn Asn Phe
100 105 110
Gly Asn Ile Pro Lys Lys Lys Asn Ser Lys Arg Glu Ala Glu Ser Ser
115 120 125
Ser Leu Asp Pro Ser Cys Phe Leu Ala Asn Ile Trp Pro Ser Ser Leu
130 135 140
Arg Tyr Asp Ser Leu Asn Leu Pro Arg Ser Phe Val Arg Ala Asn Gly
145 150 155 160
Leu Glu Thr Arg Cys Gly Arg Glu Ile Val Leu Ile Asn Glu Lys Gly
165 170 175
Lys Ser Trp Thr Leu Ala Leu Lys Gln Lys Leu Ser Gly Pro Thr Tyr
180 185 190
Ile Arg Arg Gly Trp Arg Ser Phe Cys Ile Ala Asn Gly Leu Lys Thr
195 200 205
Gly Gly Val Tyr Thr Phe Lys Leu Ile Lys Arg Gly Arg Ala Pro Val
210 215 220
Leu Arg Leu Ser Ser Thr Glu Ser Glu Leu Glu Glu Arg Asn Ile Glu
225 230 235 240
Lys Ile Gln Arg Asn Lys Ala Glu Ser Ser Ser Leu Asn Pro Ser Cys
245 250 255
Phe Val Ala Asn Ile Ser Arg Ala Thr Leu Arg Tyr Asp Thr Leu Gly
260 265 270
Leu Pro Met Lys Phe Ser Arg Glu Asn Gly Leu Glu Ala Arg Cys Gly
275 280 285
Glu Ile Val Leu Met Asn Glu Lys Gly Arg Ser Trp Lys Leu Asn Leu
290 295 300
Lys Arg Lys Arg Ser Cys Gly Thr Met Tyr Ile Thr Gln Gly Trp Arg
305 310 315 320
Ser Phe Cys Ser Ala Asn Gly Leu Arg Ala Gly Ser Ser Ser Thr Phe
325 330 335
Lys Leu Ile Lys Arg Gly Gly Thr Leu Ala Leu Arg Leu Ser Ser Lys
340 345 350
Glu Thr Glu Glu Glu Glu Glu Asp Cys Ser Leu Lys Ala Asn Glu Val
355 360 365
Glu Ser Leu Ser Thr Glu Pro Glu Ser Asp Glu Glu Gly Ser Gln Asp
370 375 380
Glu Lys Gln Ile Lys Lys His Arg Ser Thr Trp Lys Ala Ser Ser Ser
385 390 395 400
Gln Ser Gln Asn Arg Phe Val Thr Leu Thr Phe Arg Pro Phe Asn Leu
405 410 415
Glu Lys Tyr Leu Leu Phe Leu Pro Leu Arg Phe Thr Arg Trp His Gly
420 425 430
Ile Asn Glu Glu Thr Lys Met Arg Leu Leu Asp Lys Asn Gly Val Lys
435 440 445
Trp Ser Thr Asp Leu Arg Ser Gly Lys Thr Asn Ile Asp Lys Ile Arg
450 455 460
Leu Val Gly Gly Trp Gln Glu Phe Phe Lys Ala Asn Cys Val Lys Pro
465 470 475 480
Gly Glu Ser Ile Ile Val Lys Leu Ile Trp Asp Gly Asp Lys Ser Cys
485 490 495
Ile Leu Lys Phe Cys Ser Lys Val Lys His Glu Thr Glu
500 505
<210> 5
<211> 30
<212> DNA
<213>artificial sequence
<400> 5
taggatccat ggcgcatcaa catttcttct 30
<210> 6
<211> 32
<212> DNA
<213>artificial sequence
<400> 6
taggtacctc atttgatttc tagcttcacc tt 32
<210> 7
<211> 33
<212> DNA
<213>artificial sequence
<400> 7
taggatccat ggtgaacaaa cgtttcttca agc 33
<210> 8
<211> 32
<212> DNA
<213>artificial sequence
<400> 8
tagagctctc attcggtctc atgctttacc tt 32
<210> 9
<211> 30
<212> DNA
<213>artificial sequence
<400> 9
taggatccat ggcgcatcaa catttcttct 30
<210> 10
<211> 33
<212> DNA
<213>artificial sequence
<400> 10
taggatccat ggtgaacaaa cgtttcttca agc 33
<210> 11
<211> 26
<212> DNA
<213>artificial sequence
<400> 11
caagagtcca ctattaaaga acgtgg 26
Claims (7)
1. following a)-b) any one of described in application of the DNA fragmentation in improved seed size and quality;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
The improved seed quality specifically: improve the fat content in seed.
2. following 1) -2) application of the albumen described in any one of in improved seed size and quality;
1) amino acid sequence is albumen shown in SEQ ID NO.2;
2) fusion protein that the N-terminal of the albumen shown in SEQ ID NO.2 and/or C-terminal connection label obtain;
The improved seed quality specifically: improve the fat content in seed.
3. a kind of promote seed to increase and/or the method for oil synthesis, which is characterized in that including with any one of following a)-b) institute
The step of polynucleotides stated convert plant and express that the polynucleotides in the plant;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded.
4. a kind of method for reducing fat content in seed, which is characterized in that be included in and generate the seed and containing as follows
A)-b) described in any item polynucleotides plant in the step of making the polynucleotides expression reduce or not express;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded;
It or include making the protein in the plant for generating the seed and containing the albumen as described in SEQ ID NO.2
The step of activity reduces or loses.
5. according to the method described in claim 4, it is characterized in that, the method for making the polynucleotides expression reduce or not express
It include: mutation or all or part of sequence for knocking out the polynucleotides;Or the polynucleotides are interfered using RNA interfering
Expression;Or make the expression silencing of the polynucleotides using gene silencing system.
6. a kind of method for the genetically modified plants for cultivating seed size and quality-improving, which is characterized in that be to appoint following a)-b)
Polynucleotides described in one import purpose plant and obtain the genetically modified plants of seed size and quality-improving;
A) DNA fragmentation shown in SEQ ID NO.1;
B) DNA fragmentation of amino acid sequence shown in SEQ ID NO.2 is encoded.
7. according to the method described in claim 6, it is characterized in that, the seed size and quality-improving are following 1) -3) in
At least one:
1) seed of the genetically modified plants is greater than the purpose plant;
2) mass of 1000 kernel of the seed of the genetically modified plants is greater than the purpose plant;
3) fat content is greater than the purpose plant in the seed of the genetically modified plants.
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