CN100510075C - Korshinsk peashrub transcription factor CkAREB and application of the same in adversity resistant plant cultivation - Google Patents
Korshinsk peashrub transcription factor CkAREB and application of the same in adversity resistant plant cultivation Download PDFInfo
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- CN100510075C CN100510075C CNB2006100119872A CN200610011987A CN100510075C CN 100510075 C CN100510075 C CN 100510075C CN B2006100119872 A CNB2006100119872 A CN B2006100119872A CN 200610011987 A CN200610011987 A CN 200610011987A CN 100510075 C CN100510075 C CN 100510075C
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- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
The invention provides a new CkAREB gene. It originates from Caragana korshinskii Kom, whose gene coding contains AREB transcription factor of bZIP/AREB domain. Transgenation plant is obtained by colon of cDNA through AREB transcription factor. Ability of anti-hot for woody plant can be improved by anti-drought test.
Description
Technical field
The present invention relates to a kind of bZIP/AREBP class transcription factor.Specifically describe, the present invention relates to a kind of gene that derives from the coding bZIP/AREBP class transcription factor of desert shrub plant caragana microphylla (Caragana korshinskii Kom), called after CkAREB.The invention still further relates to the albumen of this class transcription factor of coding, and the carrier that contains this genoid, and utilize this genoid to cultivate the application of plant with adverse resistance.
Technical background
In western China, lack of water is that a serious environmental is coerced the factor, is to hinder bottleneck factor agricultural, that forestry further develops.Improving the resistance of plant from heredity, is pressing for of following farming, forestry.Use the regulation and control of molecular biology research plant complex physical to obtain significant progress in recent years, with physiological feature and relevant drought resisting Molecular Study development, and a plurality ofly coerce relevant gene with drought resisting and clone, locate, progressively disclosed the molecular mechanism of action (regulatory mechanism) of the drought-enduring effect of controlling plant, for the anti-adversity that utilizes genetically engineered to improve farming, woods species provides the guide of theory effect.In western China, the Desertification in soil and vegetation ecological are degenerated very serious, major cause is a drought and water shortage, many seeds of introducing a fine variety western part are because arid poor growth or death, how to recover the geographic vegetation of drought desert, checking winds and fixing drifting sand, safeguard ecotope, is the important problem that current Chinese national economy faces.China works out in succession to safeguarding the western sustainable development of China, the overall policy of administering the arid area, and wherein advocating conceding the land to forestry energetically in western arid area also is one of important measures.The demand of, high-quality forest new variety anti-to height at western China, genetic engineering technique can be combined with the conventional breeding method, be expected cultivating genetically modified degeneration-resistant new seeds, for long-range, the efficient and lasting breeding in China western part provides safeguard with being fit to the west area.
When plant is subjected to salt stress, vegetable cell comes to harm, produce a series of signals of coercing that comprise that osmotic stress and ion coerce, and these primaryly coerce the frizzled receptor of coercing that signal has further been opened the downstream, activate various adverse circumstance kinases and transcription factor, cause the enhancing of various salt tolerants, drought-enduring gene to be expressed.BZIP is that plant is being subjected under the environment stress situation, and the ABA inductive one class transcription factor that is produced can start the expression (as Lea) of the adversity gene that comprises cis-acting elements such as ARE, and improves the resistance of plant.
The inventor is cloned into bZIP/AREBP class transcription factor, called after CkAREB from desert shrub plant caragana microphylla (Caragana korshinskii Kom).This expression of gene is induced by arid, salt.Make up the expression vector that is used for single, double cotyledon plant, transformed dicotyledonous model plant tobacco and woody model plant Cortex Populi Tomentosae.Transfer-gen plant manifests tangible resistance.
Summary of the invention
An object of the present invention is to provide a kind of CkAREB with strong drought tolerance, this gene source is in caragana microphylla (Caragana korshinskii Kom), and its nucleotide sequence and aminoacid sequence are shown in SEQ ID NO:1 and SEQ ID NO:2.Sequence shown in Fig. 1 has been represented bZIP/AREBP class transcription factor in the caragana microphylla.
Should be pointed out that bZIP/AREBP class transcription factor of the present invention is carried out one or more (preferred 10) amino acid whose replacement, insertions or lack resulting analogue with identical function also reaching purpose of the present invention.Thereby the present invention also comprises with the aminoacid sequence shown in the SEQ ID NO:2 having at least 90% homology, especially has at least 95% homology, but has the functional analogue of CkAREB gene activity in the caragana microphylla simultaneously.
Another object of the present invention provides the gene C kAREB of a kind of coding from the bZIP/AREBP class transcription factor of caragana microphylla, represented the gene family of caragana microphylla CkAREB at the gene shown in Fig. 1 SEQ ID NO:1, they all contain conservative bZIP structural domain sequence, but are not limited to listed sequence.Those of ordinary skill in the art can understand, and the conservative property of carrying out one or more (preferred 10) Nucleotide on the basis of the nucleotide sequence shown in the SEQ ID NO:1 is replaced, lacks, adds or modified resulting nucleotide sequence and can realize purpose of the present invention equally.Those of ordinary skill in the art can understand equally, and the nucleotide sequence of hybridizing with the nucleotide sequence shown in the SEQ ID NO:1 under tight hybridization conditions can be realized purpose of the present invention equally.
A further object of the present invention provides a kind of method of cultivating salt-tolerant plants, and this method comprises the gene constructed plant expression vector with CkAREB of the present invention; Transform plant tissue with the expression vector that makes up; The plant transformed tissue cultivating is become plant.
Another purpose of the present invention provides a kind of mentioned CkAREB expression carrier (Fig. 3).Can use any expression vector that can guide foreign gene in plant, to express.These plant expression vectors include but not limited to, the double base agrobacterium vector, and pBIN19 for example, pBI121, pB221 contains the promotor of DRE, ARE element and the carrier that is used for the monocotyledons micropellet bombardment.Carrier also can comprise 3 ' untranslated zone.3 ' untranslated zone is meant a kind of part of gene, but it contain a kind of comprise the polyadenylic acid signal and any other effect mRNA precursor processing or the dna fragmentation of genetic expression.3 ' untranslated zone of CkAREB gene of the present invention can be used to express in plant.
Carrier of the present invention also can contain suitable promotor.Can use any strong promoter in the present invention.These promotors include but not limited to cauliflower mosaic virus (CaMV 35S) and Ubiqutin promotor.It can use separately or be used in combination with other plant promoter.
Expression vector of the present invention also can comprise enhanser when needed, no matter be translational enhancer or transcriptional enhancer.These enhanser zones include but not limited to ATG initiator codon and neighboring region.Initiator codon must with the reading frame of coding region in the same way, to guarantee the translation of whole sequence.The translation control signal can be multiple different source with initiator codon, can be natural or synthetic.Translation initiation region can be from the transcription initiation zone, or from structure gene.
For the ease of transgenic plant cells or plant being identified and screening, can process employed carrier, comprise adding the alternative mark of plant.Spendable selected marker comprises the enzyme to antibiotics resistance, and microbiotic comprises gentamicin, Totomycin, kantlex etc.Equally, can use the enzyme that produces the compound of discerning by colour-change (for example GUS) or luminous (for example luciferase), or anti-chemical reagent (for example removing the agent of withering).In addition, also can any selection markers.
Expression vector of the present invention can be by using Ti-plasmids, Ri plasmid, plant viral vector, directly DNA conversion, microinjection, importing such as electroporation vegetable cell.
Can use method plant transformed host of the present invention to comprise monocotyledons and dicotyledons, for example: willow, mesquite, graminous pasture and crop (wheat, corn, paddy rice), clover, soybean, rape, cotton, peanut etc.
Description of drawings:
Fig. 1 .CkAREB gene cDNA nucleotide sequence, SEQ ID NO:1.
The aminoacid sequence of Fig. 2 .CkAREB coded by said gene, SEQ ID NO:2.
Fig. 3 .CkAREB gene 5 ' UTR nucleotide sequence, SEQ ID NO:3.
Fig. 4 .CkAREB gene 3 ' UTR nucleotide sequence, SEQ ID NO:4.
Fig. 5 .CkAREB plant expression vector pCkAREB design of graphics.
Fig. 6. the bud of growing thickly that the tobacco of Agrobacterium transfection CkAREB differentiates.
Fig. 7. change the CkAREB transgenic tobacco plant of root media over to.
Fig. 8. the CkAREB transgenic tobacco plant of transplanting.
The PCR of Fig. 9 .CkAREB transgene tobacco detects.
The PCR-Southrn checking of Figure 10 .CkAREB transgene tobacco.
The genome dot blot checking of Figure 11 .CkAREB transgene tobacco.
The drought resistance experiment of Figure 12 .CkAREB transgenic tobacco plant, (23-26 ℃) are in transformation of tobacco of transplanting and contrast tobacco dehydration 6 days in the figure A. greenhouse; (23-26 ℃) dewatered 12 days in transformation of tobacco of transplanting and contrast tobacco in the figure B. greenhouse.
Embodiment
Describe the present invention in detail below by embodiment.Those of ordinary skill in the art should be appreciated that following embodiment is not the purpose that is used to limit, and substantial protection domain of the present invention is limited by accompanying Claim.
Agents useful for same is as follows among the embodiment:
High frequency high fidelity Pyrobest Taq, Premix Ex Taq, AMV, RNA enzyme inhibitors, various restriction enzyme, One Step RNA PCR test kit, pMD18-T Vector are available from precious (TaKaRa) company of giving birth in Dalian; The DNA purifying reclaims test kit available from ancient cooking vessel state biotech company; T4DNA ligase enzyme and RNase A are available from MBI company; ABA, DNase (RNase free) are available from Sigmag company.
The clone of embodiment 1, caragana microphylla CkAREB gene
Get 2-3 month caragana microphylla seedling (forming) of growth for material, spend the night and induce with 100uM ABA (Sigma company) available from eremophyte garden, Turfan, Chinese Academy of Sciences Xinjiang caragana microphylla seed germination.Get blade, after cleaning, put into the homogenizer after DEPC handles, sterilizes, add TRIzol (Invitrogen) grinding, homogenate, room temperature was placed 5 minutes, added chloroform extracting twice, got supernatant, with the total RNA of isopropanol precipitating, after the dry air, be dissolved in an amount of DEPC water.Carry out reverse transcription with the primer of band polyT and obtain cDNA, (concrete operations referring to Kit DRR019A, TaKaRa Biotech. (Dalian) Co.Ltd).
The primer sequence of polyT is as follows:
Oligo dT-primer:
5′-CGAGCGGCCGCCCGGGCAGGTTTTTTTTTTTTTTTT-3′(SEQ?IDNO:5)
The RT reaction conditions is as follows
DEPC water 85uL
Rnase inhibitor (40U/uL) 5uL
Oligo dT-primer 10uL
RNA 10uL
Cumulative volume 110uL
Bathed 10 minutes in 65 ℃ of temperature, immediately in quenching, adding then on ice
MgCl
2 40uL
10XRNA?Buffer 20uL
DNTP mixture 20uL
AMV 10uL
Cumulative volume 90uL
The cumulative volume 200uL of entire reaction
1.30℃ 10min
2.42℃ 1h
3.99℃ 5min
4.5℃ 5min
Get the following primer of an amount of above-mentioned reverse transcription product and carry out pcr amplification.
Forward primer:
L15′-GGGTCGATGAACATGGACGA-3′(SEQ?ID?NO:6)
Reverse primer:
R15′-TATCATCCTTCTCTGCCTCCTCTC-3′(SEQ?ID?NO:7)
The PCR condition
1.95℃ 1min
2.94℃ 30s
3.60℃ 40s
4.72℃ 2min 2 29cycles
5.72℃ 10min
6.4℃ pause
The PCR product is connected to and is used for order-checking on the pMD18-T Vector carrier (TaKaRa Biotech. (Dalian) Co.Ltd), after adopting public DNAMAN software known in this field to carry out sequence assembly, on the World Wide Web in the ncbi database with known bZIP genoid (
AF369792) compare, what conclusive evidence was cloned into by above-mentioned PCR reaction is bZIP genoid fragment.
Be template with this section sequence again, design following primer and from the reverse transcription reaction fragment, carry out 5 ', 3 '-RACE amplification respectively, obtain gene 5 ' (SEQ ID NO:3) and 3 ' terminal sequence (SEQ IDNO:4).The concrete grammar operation is referring to the BD SMART of BD Biosciences Clontech
TMRACE cDNA Amplification Kit (Cat.No.634914).
5 '-RACE primer
5′-TGTCATCTCTCCCAAAGTTGGCTGTCTCT-3′(SEQ?ID?NO:8)
3 '-RACE primer
5′-GGCTTATACCATGGAATTGGAAGCAGAAG-3′(SEQ?ID?NO:9)
On the basis of gene 5 ' and 3 ' sequence, design following Auele Specific Primer and adopt high-fidelity Pyrobest Taq pcr amplification to obtain gene ORF total length, and it is cloned among the pMD18-T Vector.
Forward primer (contain BamH I site, its recognition sequence is represented with underscore)
5′-GCC
GGATCCATGAACTTCAAGGGCTTCGGG-3′(SEQ?ID?NO:10)
Reverse primer (contain Sac I site, its recognition sequence is represented with underscore)
5′-CGAG
GAGCTCTACCATGGACCAGTTAGTGTACGT-3′(SEQ?IDNO:11)
The PCR reaction conditions is as follows:
Above-mentioned reverse transcription cDNA template plasmid 1 μ L
Each 1 μ L of forward and reverse primer
dNTP 2μL
ddH
2O 13.8μL
Pyrobest?Taq 0.2μL
10×buffer 2μL
—?—?—?—?—?—?—?—?—?—?—?—?—?—?—?—?—?—
Total: 20μL
The PCR program is:
a)95℃?2min
b)94℃?30s
c)55℃?1min
d)72℃?3min 2 29cycles
e)72℃?10min
f)4℃?pause
The CkAREB total length cds that is obtained is 1779bp, sees SEQ ID NO:1, contains the 1273bp open reading frame, and the polypeptide that 424 amino acid of encoding are formed is seen SEQ ID NO:2, its 5 ' hold to be 316bp 3 ' hold to be 190bp.
The structure of CkAREB expression vector molecular biology method routinely carries out (referring to " fine works molecular biology experiment guide " 2001, Science Press, Yan Ziying, Wang Hailin is translated).CkAREB is adopted BamH I and Sac I two scaling off from the pMD18-T Vector, reclaim, be inserted into pBI121 binary expression vector (Chen PY, Wang CK, Soong SC, To KY (2003) Complete sequence of the binary vector pBI121 and its application in cloningT-DNA insertion from transgenic plants.Molecular Breeding 11:287-293) CaMV 35S promoter back in, obtain a binary expression vector, its collection of illustrative plates as shown in Figure 5, after order-checking identifies that the insertion fragment is errorless, transform Agrobacterium LBA4404 (Hoekema A, Hirsch PR, Hooykaas PJJ, Schilperoort RA (1983) A binary plant vetor strategy based onseparation of vir-and T-region of the Agrobacterium tumefaciens Ti-plasmid.Nature 303:179-180), upgrading grain again, cut through enzyme, after PCR confirms, prove and successfully be transformed in the Agrobacterium, this expression vector can be directly used in plant, as tobacco, Cortex Populi Tomentosae, the conversion of plants such as graminous pasture.
The tobacco of embodiment 3, CkAREB gene transforms
1. the preparation of vegetable material
Do not containing the aseptic seedling that (Liu Minzhu, flowers tissue culture and batch production production, Geology Publishing House, in June, 2006,19-20 pages) cultivate tobacco (W38) (plant institute of the Chinese Academy of Sciences) on the MS substratum of hormone, culture temperature is 25-28 ℃.
2. the cultivation of Agrobacterium
The Agrobacterium that will contain the purpose expression vector is inoculated in 20ml (30mg/L Str, 50mg/L Kan) the YEP liquid nutrient medium, and 28 ℃, 220rpm shakes bacterium 16-18h, makes Agrobacterium be cultured to logarithmic phase OD
600Value 0.6-0.8.
Get bacterium liquid 1-2mL and change 40mL over to and do not contain among the antibiotic YEP, 28 ℃, 220rpm shakes bacterium and spends the night.
The YEP culture medium prescription:
Yeast?Extract?10g/L+Trypton?10g/L+NaCl?5g/L,pH7.0
3. transform
Pour bacterium liquid in the sterile petri dish (40mL/per), the blade of just drawing good wound, after putting into bacterium liquid and infecting 10-20min, with rinsed with sterile water once, the bacterium liquid on the blade is blotted slightly with sterilization filter paper, change (Liu Minzhu on the MS substratum of added with antibiotic not over to, flowers tissue culture and batch production production, the Geology Publishing House, in June, 2006,19-20 pages).The blade inoculation of contaminating keeps flat and twists with the fingers substratum slightly on the MS substratum, cultivates altogether 2-4 days under 28 ℃ of dark culture condition, until seeing the Agrobacterium bacterial plaque.
4. select to cultivate:
The conversion blade that to cultivate altogether immediately, can see the Agrobacterium bacterial plaque is put into the screening division culture medium that contains microbiotic (Cb500mg/L, Kan 500mg/L), screening and culturing 3-4 week.After waiting to sprout, change the root media (see figure 6) that contains microbiotic (Cb 500mg/L, Kan 500mg/L) over to.Obtain transfer-gen plant (as Fig. 7 and Fig. 8).
Division culture medium is formed:
Contain 6-BA 2mg/L, NAA 0.1mg/L, Pyocianil 500mg/L, the MS substratum of kantlex 500mg/L.
Root media is formed:
Contain NAA 0.1mg/L, Pyocianil 500mg/L, the MS substratum of kantlex 500mg/L.
The tobacco checking of embodiment 5, commentaries on classics CkAREB gene
1.PCR checking
(work such as F. Ao Sibai, Yan Ziying, Wang Hailin are translated, fine works molecular biology experiment guide to adopt the CTAB method.Science Press, 2001) extract the total DNA of plant, adopt primer noted earlier (SEQID NO:10 and SEQ ID NO:11) to carry out PCR and detect.The PCR that the pCkAREB plants transformed is carried out detects as Fig. 9.As seen at the about 1.3kb of DNA Marker place, have obvious PCR band in the positive control and among transformant A (1,2,3,4), B (1,2,3), C (1,2,3), D (1,2), E (1,2), the F (2), and this band not in the negative control.This shows in the tobacco transformant that is obtained and has contained this gene fragment.
2.PCR-Southern checking
(work such as F. Ao Sibai, Yan Ziying, Wang Hailin are translated, fine works molecular biology experiment guide to adopt the CTAB method.Science Press, 2001) extract the total DNA of plant, adopt primer noted earlier (SEQID NO:10 and SEQ ID NO:11) to carry out pcr amplification, 0.8% Agrose electrophoresis, vacuum suck is changeed the NC film.Adopt following primer to carry out the DIG label probe (is primer with SEQ ID NO:10 and SEQ ID NO:11) of PCR, carry out mark, hybridization and colour developing with reference to the operational manual of the DIG DNA Labeling and DetectionKit of Roche company (Cat.No.1093657).As shown in figure 10, No. 0 negative contrast of swimming lane; No. 4 positive contrasts of swimming lane; All the other 1,2,3,5 are transfer-gen plant.This shows in the transformation of tobacco plant that is obtained and contains this gene order.
3. dot blot checking
Adopt the CTAB method to extract the total DNA of plant, carry out DOT-blot point film (referring to " fine works molecular biology experiment guide " 2001, Science Press, Yan Ziying, Wang Hailin is translated).Adopt front DIG label probe, carry out mark, hybridization and colour developing (the same) with reference to the operational manual of the DIG DNA Labeling and Detection Kit of Roche company (Cat.No.1093657).The results are shown in Figure 11, wherein No. 0 negative; No. 4 positive contrasts; 1,2,3, No. 5 is transfer-gen plant.This shows in the positive transformed plant genome and contains this gene fragment really.
The tobacco drought resistance experiment of embodiment 6, commentaries on classics CkAREB gene
(23-26 ℃) will be arranged in same culturing pot in the greenhouse, the drought-enduring experiment of dewatering of the transformation of tobacco of identical developmental stage and Nicotiana gossei.As seen dehydration 6 days (Figure 12 A) and after 12 days (Figure 12 B) (CK is to contrast; PCkAREB, positive transfer-gen plant) transformant pCkAREB still grows normally, and the contrast strain is then wilted.Showing to transform has the plant of pCkAREB to have certain drought resistance.
SEQUENCE?LISTING
<110〉Inst. of Genetics and Development Biology, CAS
Forestry Inst., Chinese Forestry Science Academy
<120〉a kind of Caragana korshinskii transcription factor CkAREB and the application in adversity resistant plant cultivation thereof
<130>IB063047
<160>11
<170>PatentIn?version?3.1
<210>1
<211>1778
<212>DNA
<213〉caragana microphylla (Caragana korshinskii Kom)
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<210>2
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<212>PRT
<213〉caragana microphylla (Caragana korshinskii Kom)
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<213〉artificial sequence
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Claims (13)
1. gene C kAREB of bZIP/AREBP class transcription factor that encodes, its nucleotide sequence is shown in SEQ ID NO:1.
2. derive from the bZIP/AREBP class transcription factor of caragana microphylla, its aminoacid sequence is shown in SEQID NO:2.
3. an expression vector comprises the described gene of claim 1.
4. the described expression vector of claim 3, it is double base agrobacterium vector or plant expression vector.
5. the described expression vector of claim 4, wherein said plant expression vector contains the promotor of DRE and/or ABRE element.
6. a host cell comprises each described expression vector of claim 3-5.
7. the described host cell of claim 6, it is Bacillus coli cells or agrobatcerium cell.
8. the application of the described gene of claim 1 in transforming plant acquisition transgenic plant.
9. the described application of claim 8, wherein said plant is selected from monocotyledons or dicotyledons.
10. the described application of claim 9, described monocotyledons is selected from the group of being made up of wheat, corn, paddy rice, graminous pasture, and described dicotyledons is selected from the group of being made up of willow, soybean, cotton, rape.
11. the application of the described gene of claim 1 in coerce in raising plant stress-resistance border.
12. the described application of claim 11, wherein said environment stress is selected from the group of being made up of drought stress, salt stress.
13. a method of cultivating the plant that transforms the described gene of claim 1 comprises making up containing the plant expression vector that right requires 1 described gene; Expression vector transformed plant cells with described structure; With the plant transformed cell culture is become transfer-gen plant.
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WO2015024143A1 (en) * | 2013-08-22 | 2015-02-26 | 创世纪转基因技术有限公司 | Zinc finger protein zat10-1 from cotton, and coding gene and uses thereof |
CN106754961B (en) * | 2016-12-27 | 2020-08-04 | 内蒙古蒙草生命共同体大数据有限公司 | Gene for regulating plant response to drought induction signal calcium ions and hormone abscisic acid |
CN109384837B (en) * | 2018-12-13 | 2021-07-13 | 北京林业大学 | Poplar drought-resistant gene and application thereof |
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