CN106905422A - The Disease-causing gene of verticillium dahliae, albumen and its application - Google Patents

The Disease-causing gene of verticillium dahliae, albumen and its application Download PDF

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CN106905422A
CN106905422A CN201510981897.5A CN201510981897A CN106905422A CN 106905422 A CN106905422 A CN 106905422A CN 201510981897 A CN201510981897 A CN 201510981897A CN 106905422 A CN106905422 A CN 106905422A
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verticillium dahliae
cotton
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郭惠珊
张涛
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Beijing Zhongke Keshi Silk Biotechnology Co.,Ltd.
Xinjiang Runtu Agricultural Technology Co ltd
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Institute of Microbiology of CAS
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Abstract

The present invention relates to a kind of pathogenic protein of verticillium dahliae, the albumen has causes the effect of cotton verticillium wilt, is following protein 1) or 2):1) amino acid sequence such as SEQ ID NO:Protein shown in 2;2) by SEQ ID NO:2 amino acid sequence causes a disease the related protein as derived from 1) by the substitution of one or several amino acid residues and/or missing and/or addition and to verticillium dahliae.Further relate to the application of the gene and the gene and albumen of encoding said proteins.The Disease-causing gene, albumen and verticillium dahliae cause the mechanism of cotton verticillium wilt with being closely connected, and the pathogenic of verticillium dahliae can be reduced by knocking out the Disease-causing gene.

Description

The Disease-causing gene of verticillium dahliae, albumen and its application
Technical field
The present invention relates to biological technical field, and in particular to the Disease-causing gene of verticillium dahliae, albumen and Its application.
Background technology
Cotton as caused by soil filamentous fungi verticillium dahliae (Verticillium dahliae Kleb.) Verticillium wilt is a kind of vascular bundle diseases of soil-borne, and Variation Pathogenic Bacteria is very fast, with distribution is wide, harm Weight, the time-to-live is long, chemical pesticide is difficult to the features such as preventing and treating, and is most destroyed in cotton growth process One of disease of property, seriously threatens the production and development of cotton.Cotton verticillium wilt 1914 first appeared in The Fei Jiniya states in the U.S., then successively find (Shen Qiyi, 1992) in other states and Ge Zhimian states of the world, Nineteen thirty-five does not weigh with the U.S. incoming China of cotton variety of introduction, but harm.After to twentieth century fifties, Verticillium wilt occurs successively in China north and south part cotton region, and diffusion rate of propagation is accelerated.It is the end of the eighties, yellow Disease of withering is throughout national 478 Ge Zhimian counties (city).Since the nineties, Cotton verticillium wilt expands Exhibition spreads rapidly, and especially continuous big generation in China in 1993,1995,1996,2002 years, damages Lose serious.According to the report of the 11st international Verticillium dahliae conference in 2012, cotton 2005-2010 generation 23,520,000 tons of boundary's average annual productivity, the loss caused by Verticillium dahliae disease is up to 30% for producing per year, every 1% The loss of yield is equivalent to 3.54 hundred million dollars of loss.China is Cotton Production big country, national cotton plantation Nearly hundred million mu of area, ginnings accounts for a quarter of global cotton total output.The quality of Cotton Production is not only Income and the life of cotton grower are directly affected, also has great influence to light textile, foreign trade and national defense construction. But cotton verticillium wilt worldwide prevailing, seriously threaten the production and development of cotton. The cotton major producing area Xinjiang of China, it is very tight because of the cotton underproduction problem that verticillium wilt causes every year Weight, very big economic loss is caused to cotton grower and country.Cotton verticillium wilt has turned into Cotton Production can One of major obstacle of sustainable development, is referred to as " cancer of cotton " (simple osmanthus is good to wait .2003), and turned into The outstanding problem of restricting current Cotton in China production.
Verticillium dahliae (Verticillium dahliae Kleb.) belongs to Deuteromycotina, and clump stalk embraces mesh, light color Spore section, Verticillium dahliae category.The host range of verticillium dahliae is very wide, be related to Cruciferae, the rose family, Pulse family, Solanaceae, Labiatae, composite family etc., at present up to 660 various plants, and also year by year Expand.Mechanism of causing a disease on cotton verticillium wilt has various explanations, wherein with catheter blockage and poisoning two Plant based on viewpoint.The sixties, people were because thalline is default in conduit to the understanding of the germ mechanism of causing a disease Grow, and amount reproduction, while stimulating neighbouring parenchyma cell to produce colloid substance and thylose and block Conduit, hinders the operating of moisture, so as to cause here cotton plant withers (Garber, 1966).Ma Yuanli etc. (1990) It is normal secondary wooden to thinking after the distribution situation research in the catheter of each position verticillium wilt pathogen of cotton Considerably beyond the gross water requirement of plant, and blocked conduit number accounts for the potential conveyance power of water of portion's conduit The ratio of whole vascular bundle less (maximum has 17.7%), therefore catheter blockage is not to cause here cotton withers Main cause.Keen etc. (1972) thinks that the toxin that verticillium wilt pathogen is produced in metabolic process is have The protein of poison, is a kind of complex of the lipopolysaccharides of acidic protein one.The compound is to susceptible cotton The blade of kind has destruction with the cell membrane of root tissue, makes intracellular K+And Na+A large amount of seepages. And the cell membrane of disease-resistant variety does not possess the acceptor site of detoxifying function without being destroyed by toxin.Wang etc. (2004) be separated to from the mycelia of verticillium wilt opportunistic pathogen one it is new with there is the cause effect of withering to cotton leaf Albumen VdNEP.The albumen can form necrotic plaque with evoking tobacco blade, it is also possible to produce arabidopsis Raw disease resistance response, therefore the albumen may take part in interaction reaction when verticillium wilt pathogen infects to cotton. But it is not immediately clear whether the albumen is same substance with the toxin protein that oneself was separate in the past.Now more Show come more research, the toxin of verticillium wilt pathogen secretion is to cause the critical biochemical factor of verticillium wilt, The occlusive effects Water Transportation of tissue tract may exacerbate the generation of illness simultaneously.
Verticillium dahliae is a kind of soil-borne fungus, and its dormancy knot can be produced in the case where rugged environment is dried Structure Microsclerotia, so as to be survived for many years in soil.So the formation of Microsclerotia and its pathogenic breath manner of breathing Close.2004, Dobinson KF etc. (Dobinson, K.F., et al., 2004) were using having transformed EZ::TN transposon systems, the trypsase VTP1 to the verticillium dahliae from tomato successfully enters Orientation of having gone is knocked out.The gene can promote the formation of Microsclerotia, but not influence it after knocking out Pathogenic and growth characteristics.2005, Dobinson KF etc. were to from the big beautiful of lettuce and tomato The mitogen activated protein kinase gene VMK1 of Verticillium dahliae is knocked out.After knocking out VMK1 Pathogenic slump of disastrous proportions of the bacterial strain to various hosts, illustrates the signal path of map kinase mediation in fungi Played an important role on pathogenic.And the knockout of gene reduces the generation of spore and the shape of Microsclerotia Into illustrating that the gene may participate in multiple cellular processes.
Due to the seriousness and the popularity of host of cotton verticillium wilt harm, sections of many countries in the world Skilled worker author has made intensive studies to it.Plant is obtained during the long-term coevolution with pathogen The defense mechanism for obtaining a series of complex protects oneself, and Resistant expression is that composing type resistance and induction type are anti- Property, induction type resistance includes institutional framework resistance and Physiology and biochemistry resistance again.It is different to resistance to verticillium wilt Cotton variety there is some difference in terms of institutional framework, oneself is much studied confirmation both at home and abroad.It is anti- The space between cells of sick kind xylem is smaller, and cell membrane is thicker, and is penetrated containing more marrow in xylem Line.In addition, the fiber core diameter of the catheter lumen of disease-resistant variety and xylem is less than susceptible variety, explanation Cotton variety has solid xylem relevant the resistance of verticillium wilt with it.The Physiology and biochemistry of cotton resists Oneself had more research to characteristic of disease aspect, and studying more disease-resistant correlation factor includes:Protective plant protecting agent, tannin, Soluble sugar, amino acid and various enzymes.After germ invasion and attack are subjected to, inside produces various suppressions to cotton plant Fungus matter, mainly including gossypol, protective plant protecting agent, tannin etc., in addition also with some enzymes, albumen and Small-molecule substance such as H202.Their effect is non-specialization, and the basal resistance to plant is related.Cotton The mechanism of flower resisting verticillium is an extremely complex problem, and the factor being related to is numerous, therefore constantly deep Enter to study these rules of disease resistance response product on gene expression dose, for giving farther insight into Disease resistance mechanisms and utilization genetic engineering means transformation cotton variety resistance are significant.
The acquisition of disease-resistant gene is the important foundation of breeding resistant variety, is learned to do by molecular biosciences at present Oneself has more than 39 to section through the plant disease resistance genes of clone, and wherein disease-resistant fungal pathogen probably has more than 20 Individual, such as arabidopsis mildew-resistance gene RPW8, tomato anti-blight gene secretes Ve, and jowar is anti-common Rust (Puccinia Sorghi) gene Rpl-D, and it is anti-that NBS-LRR classes have been cloned on sea island cotton Ospc gene.On conventional breeding, domestic and international cotton breeding person payes attention to the screening and creation in anti-source always. Lee 1983-1986 has carried out resisting verticillium identification into 161 pairs of 911 parts of upland cotton resources such as luxuriant growths, screens Preferably a collection of anti-(resistance to) the disease kind of resistance.K.V.Srinvasin identifies 126 island cotton varieties Resistance, as a result shows that performance is resistance to sick and disease-resistant and accounts for 85%.Anti- source is either found by conventional method, Or disease-resistant gene is cloned by molecular biology method and all has been achieved for certain progress, but do not had also There is the effective way for finding real preventing and treating cotton verticillium wilt.Basic reason is the crop genetics such as the cotton back of the body Scape is complicated, it is difficult to molecular level carry out deeper into research, verticillium dahliae microspecies dissociation in addition The reason such as different in nature strong is also for resistant heredity breeding brings numerous difficulties.Therefore, research cotton verticillium wilt disease Former verticillium dahliae is most important with the molecule mechanism of host plant interaction.
The content of the invention
The invention provides a kind of Disease-causing gene of verticillium dahliae, albumen and its application, the pathogenic base Cause, albumen and verticillium dahliae cause the mechanism of cotton verticillium wilt with being closely connected, should by knocking out Disease-causing gene can reduce the pathogenic of verticillium dahliae.
A kind of one aspect of the present invention, there is provided pathogenic protein of verticillium dahliae, is named as HiC-15 (isotrichodermin C-15hydroxylase), from verticillium dahliae (Verticillium dahliae Kleb.), the albumen has causes the effect of cotton verticillium wilt, is following protein 1) or 2):
1) amino acid sequence such as SEQ ID NO:Protein shown in 2;
2) by SEQ ID NO:2 amino acid sequence by one or several amino acid residues substitution And/or missing and/or addition and caused a disease the related protein as derived from 1) to verticillium dahliae.
A kind of another aspect of the present invention, there is provided Disease-causing gene of verticillium dahliae (being named as HiC-15), The albumen of the gene code has causes the effect of cotton verticillium wilt, is following 1) to any institute in 4) The gene stated:
1) nucleotide sequence such as SEQ ID NO:From 5 ' end 1-62,120-722 in 1 Position, 780-1012 and the gene shown in 1063-1741;
2) nucleotide sequence such as SEQ ID NO:Gene shown in 1;
3) under strict conditions with 1) or 2) described in the gene recombination and coding claim 1 for limiting The gene of albumen;
1) or 2) 4) there is more than 90% homology and coding claim 1 with the gene for limiting The gene of the albumen.
SEQ ID NO:1 is made up of 1742 deoxynucleotides, SEQ ID NO in sequence table:1 From 5 ' end 1-62;120-722;780-1012;1063-1741 is ORF areas, coding SEQ ID NO:The protein of amino acid residue sequence described in 2, by SEQ ID NO:Albumen shown in 2 is named as HiC-15, and the encoding gene of HiC-15 albumen is named as into HiC-15.
" stringent condition " is to be enough to make nucleotide sequence and SEQ ID NO:Gene sequence shown in 1 Arrange hybridization condition, these conditions be to those skilled in the art it is known, for example:Containing 0.1%SDS 0.1 × SSPE or the 0.1 × SSC solution containing 0.1%SDS in, Hybridize at 65 DEG C, and film is washed with the solution.
Recombinant vector, expression cassette, transgenic cell line present invention also offers the above gene or Recombinant bacterium.
" expression cassette " means that the nucleotide sequence for being adapted to specific nucleotide sequence expression in host cell can be instructed, Comprising the controlling element being operably connected with purpose nucleotide sequence.The controlling element can be opened The element that mover, enhancer, son of mourning in silence, terminator and/or other described nucleotide sequences of control are expressed, Such as polyadenylation se-quence.
Another aspect of the invention, there is provided the purposes of the above gene, strikes in verticillium dahliae Except above-described gene makes the pathogenic reduction of verticillium dahliae.
The pathogenic method of verticillium dahliae is reduced it is still another aspect of the present invention to provide a kind of, is knocked out Above-described gene, specifically includes following steps:
(1) SEQ ID NO are expanded respectively using two pairs of primers:3 and SEQ ID NO:Sequence shown in 4 Row, the fragment that will be obtained after amplification imports expression vector;
(2) SEQ ID NO are contained by what is obtained in step (1):3 and SEQ ID NO:4 The expression vector conversion Agrobacterium of the fragment of shown sequence;
(3) the successful Agrobacterium of conversion is chosen;
(4) by the successful Agrobacterium infection verticillium dahliae of conversion described in step (3), choosing Take resistant bacterial strain, the bacterial strain of as pathogenic reduction.
The process described above, wherein, two pairs of primer sequences are as follows described in step (1):
Sense primer 1:5 ' → 3 ' directions:GGGTTTAAUGCACCATTACGGATACA GAG(SEQ ID NO:5);
Sense primer 2:5 ' → 3 ' directions:GGACTTAAUGAGAGAAGCAACAAGG GAGA(SEQ ID NO:6);
Anti-sense primer 1:5 ' → 3 ' directions:GGCATTAAUTACCTATTGACCTCCATC GC(SEQ ID NO:7);
Anti-sense primer 2:5 ' → 3 ' directions:GGTCTTAAUAAGATTGAGCCCTATTTC CC(SEQ ID NO:8)。
The process described above, wherein, step also specifically includes following steps in (1):
By the sense primer 1 and the sense primer 2 with verticillium dahliae genomic DNA as mould Plate PCR amplification SEQ ID NO:The gene of sequence shown in 3, the anti-sense primer 1 and the downstream Primer 2 with verticillium dahliae genomic DNA be template PCR amplifications SEQ ID NO:Sequence shown in 4 The gene of row, by amplification after two kinds of PCR primers be all connected to expression vector.
The process described above, wherein, step is contained by electroporated method in (2) by described SEQ ID NO:3 and SEQ ID NO:The expression vector of the fragment of sequence shown in 4 imports Agrobacterium sense By state cell.
The process described above, wherein, coated containing anti-by by the Agrobacterium in step (3) Cultivated on the flat board of raw element, the successful bacterial strain of screening conversion.
The process described above, wherein, the fungal bacterial strain in step (4) after by Agrobacterium-mediated Transformation Coat and cultivated on the flat board containing antibiotic the screening successful bacterial strain of conversion.
The Disease-causing gene of present invention offer, albumen the experiment proved that and cause cotton yellow to wither with verticillium dahliae The mechanism of disease has and is closely connected, can be with by knocking out in verticillium dahliae Disease-causing gene of the invention Make the pathogenic reduction of verticillium dahliae, the verticillium dahliae mutation of Disease-causing gene of the present invention will have been knocked out Body infects plant simultaneously with wild type verticillium dahliae, the cotton phase infected by verticillium dahliae mutant strain More than 40%, disease index are reduced than the cotton verticillium wilt incidence of disease that wild type verticillium dahliae infects Also there is larger reduction with sick series.Therefore the present invention is provided newly to study verticillium dahliae pathogenesis Enlightenment, for treat and prevent cotton verticillium wilt provide new approach.
Brief description of the drawings
Fig. 1 is the contrast for detecting DNA level HiC-15 knockout mutations bodies in embodiment 2 by PCR Electrophoretogram;Swimming lane 1 is marker, and swimming lane 2,3,4 is wild type verticillium dahliae V592;Swimming lane 5,6,7 It is HiC-15 knockout mutations bodies VdaΔhic-15-1;Swimming lane 8,9,10 is HiC-15 knockout mutations bodies VdaΔhic-15-2.Wild type verticillium dahliae V592 is expanded with F1-HptR and HptF-R1 these two pairs primer Increase not shaping band, and Fg-Rg can be to amplify band;Conversely, HiC-15 knockout mutations bodies VdaΔhic-15- 1 and VdaΔhic-15- 2 can expand shaping with F1-HptR and HptF-R1 these two pairs primer Band, and Fg-Rg can not amplify band, illustrate that HiC-15 is knocked;
Fig. 2 is HiC-15 knockout mutationss body by HiC-15 tables in qRT-PCR detection rna levels Up to the block diagram of situation;
Fig. 3 is the control cotton plants not infected in embodiment 4;
Fig. 4 is the cotton plants after being infected by verticillium dahliae V592 in embodiment 4;
Fig. 5 is by the knockout mutations body Vda of verticillium dahliae V592 in embodiment 4Δhic-15After infecting Cotton plants;
Fig. 6 be in embodiment 4 cotton plants by wild type verticillium dahliae V592 and knockout mutations body VdaΔhic-15Infect the incidence of disease comparison diagram after 20 days;
Fig. 7 be in embodiment 4 cotton plants by wild type verticillium dahliae V592 and knockout mutations body VdaΔhic-15Infect the disease index comparison diagram after 20 days;
Fig. 8 be in embodiment 4 cotton plants by wild type verticillium dahliae V592 and knockout mutations body VdaΔhic-15Infect the sick series comparison diagram after 20 days.
Specific embodiment
Below in conjunction with drawings and Examples, more detailed theory is carried out to specific embodiment of the invention It is bright, so as to more fully understand the solution of the present invention and the advantage of its various aspects.However, with The specific embodiment and embodiment of lower description are only descriptive purposes, rather than limitation of the present invention.
Experimental technique used in following embodiments is conventional method unless otherwise specified.
Material used, reagent etc. in following embodiments, unless otherwise specified, commercially Obtain.
Agrobacterium tumefaciems EHA105 (Elizabeth E.Hood. in following embodiments NewAgrobacteriumhelper plasmids for gene transfer to plants.Transgenic Research, July 1993, Volume 2, Issue 4, pp 208-218) 20 years public can from the applying date Obtained from Institute of Microorganism, Academia Sinica, the biomaterial is only attached most importance to again related experiment of the invention It is used, can not be used as other purposes.
Verticillium dahliae V592 (Feng-Gao, Bang-JunZhou, A Glutamic in following embodiments Acid-Rich Protein Identified in Verticillium dahliae from an Insertional Mutagenesis Affects Microsclerotial Formation and Pathogenicity.PLoS ONE 5(12):E15319.) 20 years public can obtain from Institute of Microorganism, Academia Sinica from the applying date, The biomaterial is only attached most importance to again used by related experiment of the invention, can not be used as other purposes.
" wild type " means not containing the organism of exogenous nucleic acid molecule in following embodiments, is non-turn Organism change or non-transgenic.
The structure of embodiment 1, HiC-15 knockout carriers
Verticillium dahliae V592 genomic DNAs are extracted using CTAB methods, using following primer with the base Because group DNA is template, utilizeCxHotstart archaeal dna polymerases (Agilent) enter Performing PCR is expanded:Sense primer 1:5 ' → 3 ' directions: GGGTTTAAUGCACCATTACGGATACAGAG(SEQ ID NO:5);Sense primer 2: 5 ' → 3 ' directions:GGACTTAAUGAGAGAAGCAACAAGGGAGA(SEQ ID NO:6);Anti-sense primer 1:5 ' → 3 ' directions: GGCATTAAUTACCTATTGACCTCCATCGC(SEQ ID NO:7);Anti-sense primer 2: 5 ' → 3 ' directions:GGTCTTAAUAAGATTGAGCCCTATTTCCC(SEQ ID NO:8). Two kinds of PCR primers are connected to simultaneously with USER enzyme mix (New England Biolabs) PGKO-HPT carriers (Tian, L., Chen, J., Wang, J., Wang, J., and Dai, X.2011, from 20 years public can obtain from Institute of Microorganism, Academia Sinica from the applying date, and the biomaterial is only Repeat used by related experiment of the invention, to be used as other purposes) on, sequencing result shows Recombinant vector containing the DNA molecular shown in SEQ ID No.3 and SEQ ID No.4 is defined as most Whole knockout carrier.Obtained in rotating into wild type verticillium dahliae V592 using Agrobacterium-medialed transformation HiC-15 knockout mutations bodies.
The acquisition of embodiment 2, HiC-15 knockout mutations bodies
1) genetic transformation is carried out to fungi using agrobacterium-mediated transformation
Related culture medium:
A () looks into formula culture medium (30g/L sucrose, 3g/L NaNO3,0.5g/L MgSO4-7H2O,0.5 g/L KCl,100mg/L FeSO4-7H2O,1g/L K2HPO4,pH 7.2).LB fluid nutrient mediums:Egg White peptone 10g, yeast extract 5g, water 1000ml, adjust pH to 7,121 DEG C, high steam with NaOH Sterilizing 20min.
(b) LB fluid nutrient mediums:Peptone 10g, yeast extract 5g, NaCl5G, adds water to 1L, 121 DEG C, steam sterilizing 20min.Solid medium adds 1.5% agar.
(c) MM minimal mediums:10mL K-bufer(200g/L K2HPO4,145g/L KH2PO4, H3PO3PH is to 7.0) for regulation, 20mL M-N buffer (30g/L MgSO4·7H2O, 15g/L NaCl), The CaCl of 1mL 1%2·2H2The sucrose (w/v) of O (w/v), 10mL 20%, the FeSO of 1mL 0.1%4 (w/v), 0.5g NH4NO3, plus distilled water is to 1L.113 DEG C, steam sterilizing 20min.
(d) IM inducing cultures:10mL K-bufer (pH 7.0), 20mL M-N buffer, 1mL 1%CaC12·2H2O (w/v), the NH of 2.5mL 20%4NO3(w/v), 1mL 0.1% FeSO4(w/v), 5mL glycerine, the sucrose of 5mL 2mol/L, 2mL 100mmol/L acetyl Syringone, the MES (pH 5.3) of 40mL 1mol/L, plus distilled water are to 1L.113 DEG C, steam goes out Bacterium 20min.
E () CM co-cultures culture medium:1.5% agar powder is added in IM culture mediums, 113 DEG C, is steamed Vapour sterilizing 20min.
Concrete operation step
(1) picking Agrobacterium single bacterium colony put into 5ml contain antibiotic (50ug/ml kanamycins, 50ug/ml rifampins) LB fluid nutrient mediums, be placed on 28 DEG C of shaking tables, 200rpm cultures are 24 small When, at the same time it is put into the V592 bacteria cakes on 3 PDA solid mediums of toothpick picking and contains 80ml Look into the triangular flask of formula culture medium, be placed on 26 DEG C of shaking tables, 200rpm cultures.
(2) take the Agrobacterium bacterium solution that 1ml cultivated 24 hours and be added to 20ml and contain antibiotic In the MM fluid nutrient mediums of (50ug/ml kanamycins, 50ug/ml rifampins), it is placed in 28 DEG C and shakes On bed, after 200rpm continues to cultivate 24 hours, 4000rpm centrifugations 10min, collects bacterium on centrifuge Body, thalline is washed twice with IM culture mediums, then resuspended with IM culture mediums, adjusts OD600≈ 0.25, will train 48 hours wild type verticillium dahliae V592 afterwards, four layers of sterilized filtered through gauze have been supported, will The bacterium solution for having filtered is placed in 4000rpm on centrifuge, and 10min is centrifuged, with the resuspended spores of IM+AS, Blood counting chamber is counted, and it is 1.0 × 10 to adjust spore concentration6-7Individual spore/ml.
(3) Agrobacterium bacterium solution and fungal spore suspension are pressed 1:1 volume ratio mixes (respectively taking 1ml), The glassine paper on CM culture medium flat plates is coated according to the μ l of every culture dish 200,26 DEG C of cultures 36 are small When.
(4) coculture is rinsed with 3ml sterilized waters, is coated containing anti-according to 500ul/ plates Raw element (hygromycin 50ug/ml, carbenicillin 200ug/ml, cephalosporin 200ug/ml, 20ug/ml five Fluorouracil) PDA solid mediums on cultivate 5-7 days.
2) PCR identifies HiC-15 knockout mutationss body (Fig. 1)
A, CTAB method extract HiC-15 knockout mutations body genomic DNAs.
B, entered using three pairs of primers performing PCR amplification.First pair:In the upstream of genes of interest HiC-15 One primers F 1 of upstream design of fragment SEQ ID NO.3: 5’-ACATCCTGTTCAAACGGCTC-3’(SEQ ID NO:9), on HPT BOX draws Thing HptR:5’-AAATTTTGTGCTCACCGCCTGGAC-3’(SEQ ID NO:10) carry out Fragment upstream PCR is expanded.Second pair:In the downstream of genes of interest segments downstream SEQ ID NO.4 again One primer of design, is named as R1:5’-GGAGTGTTGCCACCGAATGC-3’(SEQ ID NO:11), another primer HptF on HPT BOX:5’- TCTCCTTGCATGCACCATTCCTTG-3’(SEQ ID NO:12) expansion of segments downstream is carried out Increase.If primer pair 1 and primer pair 2 can be amplified and the equal-sized fragment of expection, explanation Restructuring is that occur in the position of genes of interest.3rd pair of primer:Fg:5’- CGAAATCGATGGATCCTGGCTAACATCAGCCATCTG-3’(SEQ ID NO:13), Rg:5’-AGGCTACGTAGGATCCCGTCATCAAACCCCAACTCT-3’ (SEQ ID NO:14) for expanding the genes of interest of knockout, it is impossible to amplify segment surfaces genes of interest true It is knocked successfully in fact.
Embodiment 3
Verticillium dahliae V592 and Vda are extracted using CTAB methodsΔhis-15Genomic DNA, using Sup ErScript III reverse transcriptase (Promega Corporation) reverse transcription reagent box, obtains V592 and VdaΔhis-15CDNA, qRT-PCR analysis use One-Step RT-PCR kit Kit (ABM, Inc.), instrument is 1000series Thermal Cycling Platform (Bio- Rad Laboratories,Inc.).Need to use two pairs of primers in experiment, a pair is HiC-15-q-f:5’ -GCAAGTTTGGTGATGTGGAGGAA-3’(SEQ ID NO:15),HiC-15-q-r:5’- GCACGGAGAATGGGCAGAA-3’(SEQ ID NO:16);It is another to being internal control primer: VdELF-F:5’-CCATTGATATCGCACTGTGG-3’(SEQ ID NO:17), VdELF -R:5’-TGGAGATACCAGCCTCGAAC-3’(SEQ ID NO:18).Result such as Fig. 2 institutes Show.
The pathogenic detection of the knockout mutations body of embodiment 4
Water planting cotton is infected by bacterial strain pathogenic to identify its.Select full cotton seed with 15% time After sodium chlorate immersion 30min, aseptic water washing 2-3 times, then overnight put down afterwards with sterilized water Steeping and budding Moisturizing in culture box is layered on, treats that bud is long to 3cm, planted in the box that germinates.The seedling transfer of cotyledon will be grown To in the plastic casing (8-10cm high) for filling with clear water, in 25 DEG C, illumination 16h, dark 8h cultures. Clear water is changed into 1/3 MS nutrient solutions when true leaf grows, a nutrient solution is changed weekly, 1 true It is inoculated with when leaf is flattened.By -80 DEG C of verticillium dahliae V592 bacterial strains and HiC-15 knockout mutations bodies of preservation VdaΔhis-153-4d is activated through PDA plate, Cha Shi nutrient solutions is put into from colony edge picking bacterium block, 25 DEG C, 220rpm shakes training 5d, and filtering, filtrate 5000rpm centrifugation 5min, clear water dilutes spore, Blood counting chamber is counted, and concentration is adjusted into 1 × 107Individual spore/ml.The spore suspension of concentration will be mixed up Add in empty plastic casing, cotton seedling soaks root 40min.Afterwards with 1/3 25 DEG C of illumination 16h of MS nutrient solutions, Dark is lower to be continued to cultivate cotton seedling 8h.12 young plants are planted in per box, 3 repetitions of each kind compare cotton seedling 40min is soaked with clear water.Incidence is observed after 20 (see Fig. 3 to Fig. 5).
By the above method, we demonstrate HiC-15 knockout mutationss body and the pathogenic of cotton are substantially subtracted It is weak
Calculate the incidence of disease and disease index:
The incidence of disease=morbidity number/investigation sum × 100% (see Fig. 6)
Disease index=∑ [sick series × this grade disease leaf (fringe, strain) number]/(investigation sum × highest disease series) × 100 (see Fig. 7)
Morbidity grade scale:
0 grade of plant health does not have symptom;
1 grade of blade of 0.1%-25% is wilted;
2 grades of blades of 25%-50% are wilted;
3 grades of blades of 50%-75% are wilted;
4 grades of blades of 75%-100% are wilted or dead;
The cotton that wild type verticillium dahliae V592 infects and knockout mutations body V592ΔisotC-15HOInfect Cotton morbidity grade scale statistical chart (see Fig. 8).
By the result figure of the above method, we can see that knockout mutations body V592ΔisotC-15HOInfect Cotton infects the cotton incidence of disease, disease index and morbidity classification compared to wild type verticillium dahliae V592 All substantially reduce, illustrate that HiC-15 genes are pathogenic related to verticillium dahliae.
Finally it should be noted that:Obviously, above-described embodiment is only intended to clearly illustrate the present invention and is made Citing, and not to the restriction of implementation method.For those of ordinary skill in the field, Can also make other changes in different forms on the basis of the above description.Here need not All of implementation method cannot be exhaustive.And the obvious change or change thus amplified out Among moving still in protection scope of the present invention.

Claims (10)

1. a kind of pathogenic protein of verticillium dahliae, it is characterised in that the albumen has causes cotton The effect of verticillium wilt, is following protein 1) or 2):
1) amino acid sequence such as SEQ ID NO:Protein shown in 2;
2) by SEQ ID NO:2 amino acid sequence by one or several amino acid residues substitution And/or missing and/or addition and caused a disease the related protein as derived from 1) to verticillium dahliae.
2. a kind of Disease-causing gene of verticillium dahliae, it is characterised in that the albumen of the gene code has Cause the effect of cotton verticillium wilt, be following 1) to any described gene in 4):
1) nucleotide sequence such as SEQ ID NO:In 1 from 5 ' end 1-62,120-722, Gene shown in 780-1012 and 1063-1741;
2) nucleotide sequence such as SEQ ID NO:Gene shown in 1;
3) under strict conditions with 1) or 2) described in the gene recombination and coding claim 1 for limiting The gene of albumen;
1) or 2) 4) there is more than 90% homology and coding claim 1 with the gene for limiting The gene of the albumen.
3. recombinant vector, expression cassette, transgenic cell line or weight containing gene described in claim 2 Group bacterium.
4. the purposes of gene as claimed in claim 2, it is characterised in that knocked out in verticillium dahliae Gene described in claim 2 makes the pathogenic reduction of verticillium dahliae.
5. it is a kind of to reduce the pathogenic method of verticillium dahliae, it is characterised in that to knock out claim 2 Described gene, specifically includes following steps:
(1) SEQ ID NO are expanded respectively using two pairs of primers:3 and SEQ ID NO:Sequence shown in 4 Row, the fragment that will be obtained after amplification imports expression vector;
(2) SEQ ID NO are contained by what is obtained in step (1):3 and SEQ ID NO:4 The expression vector conversion Agrobacterium of the fragment of shown sequence;
(3) the successful Agrobacterium of conversion is chosen;
(4) by the successful Agrobacterium infection verticillium dahliae of conversion described in step (3), choosing Take resistant bacterial strain, the bacterial strain of as pathogenic reduction.
6. method as claimed in claim 5, it is characterised in that two pairs are drawn described in step (1) Thing sequence is as follows:
Sense primer 1:5 ' → 3 ' directions:GGGTTTAAUGCACCATTACGGATACA GAG;
Sense primer 2:5 ' → 3 ' directions:GGACTTAAUGAGAGAAGCAACAAGG GAGA;
Anti-sense primer 1:5 ' → 3 ' directions:GGCATTAAUTACCTATTGACCTCCATC GC;
Anti-sense primer 2:5 ' → 3 ' directions:GGTCTTAAUAAGATTGAGCCCTATTTC CC。
7. method as claimed in claim 6, it is characterised in that step is also specifically included in (1) Following steps:
By the sense primer 1 and the sense primer 2 with verticillium dahliae genomic DNA as mould The gene of sequence shown in plate PCR amplification SEQ ID NO.3, the anti-sense primer 1 and the downstream are drawn The sequence shown in template PCR amplifications SEQ ID NO.4 with verticillium dahliae genomic DNA of thing 2 Gene, by amplification after two kinds of PCR primers be all connected to expression vector.
8. method as claimed in claim 5, it is characterised in that turned by electric shock in step (2) The method of change is by the expression containing the fragment of sequence shown in SEQ ID NO.3 and SEQ ID NO.4 Vector introduction Agrobacterium competent cell.
9. method as claimed in claim 5, it is characterised in that by will be described in step (3) Agrobacterium is coated and cultivated on the flat board containing antibiotic, the successful bacterial strain of screening conversion.
10. method as claimed in claim 5, it is characterised in that by by agriculture bar in step (4) Fungal bacterial strain after bacterium conversion is coated and cultivated on the flat board containing antibiotic the screening successful bacterium of conversion Strain.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104818287A (en) * 2015-02-09 2015-08-05 中国农业科学院棉花研究所 Applications of verticillium dahlia pathogenicity related gene VdPR1 as anti-verticillium dahlia target gene
CN104988139A (en) * 2015-05-19 2015-10-21 中国科学院微生物研究所 Method for cultivating cotton resisting verticillium dahliae

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104818287A (en) * 2015-02-09 2015-08-05 中国农业科学院棉花研究所 Applications of verticillium dahlia pathogenicity related gene VdPR1 as anti-verticillium dahlia target gene
CN104988139A (en) * 2015-05-19 2015-10-21 中国科学院微生物研究所 Method for cultivating cotton resisting verticillium dahliae

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
FOGELQVIST,JOHAN: ""ACCESSION No.:CRK26538.1,hypothetical protein BN1708_014546[Verticillium longisporum]"", 《GENBANK》 *
MA,L.-J.J.等: ""ACCESSION No.:NW_009276919.1,Verticillium dahlia VdLs.17 supercont1.29 genomic scaffold, whole genome shotgun sequence"", 《GENBANK》 *
李小萍等: ""棉花黄萎病菌致病相关基因的分离及敲除载体的构建"", 《河南农业大学学报》 *
林玲等: ""棉花黄萎病研究进展"", 《棉花学报》 *

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