抗黄瓜花叶病毒RNAi载体的构建及烟草的转化

发布时间:2021-06-05

AgriculturalScience&Technology,2010,11(5):69-72Copyright2010,InformationInstituteofHAAS.Allrightsreserved.

PlantProtection

ConstructionofRNAiVectorWhichResistCucumberMosaicVirusandTransformationofTobacco

ZHANGYu,ZHENGYinying,ZHAOFengyu,QIAOYahong,CUIBaiming,XIANGBenchun

KeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity,Shihezi832003

Abstract [Objective]AimedtoconstructRNAivectorresistanttocucumbermosaicvirusandtransferredthisvectorintotobacco.[Method]RTPCRmethodwasusedtoamplifycucumbermosaicvirusNS04andprocessRNA2genesequenoftomatoisolates.TheanalysisresultsofphylogenetictreedemonstratedthatthesequenceinRNA2encodedCMV2ahad98.0%and96.5%homologywithnucleotideandaminoacidof

,China.ThereplicasefragmentinCMVRAN2genewastakenastargetsequencetoconstructpBi35SCR2eukaryDQ412731isolateofZhejiang

oticexpressionvector,thentheexpressionvectorwasidentified.Throughagrobacteriummediatedmethod,theexpressionvectorwastransferredintotabaccoandPCRmethodwasusedtocheckthetransfer.ThePCRresultsdemonstratedthattheexperimenthadsuccessfullyconstructeukaryoticexpressionvectorofpBi35SCR2andtheexpressionvectorwassuccessfullytransferredintotabacco.[Conclusion]Theobtainedtransgenictobaccocouldbeusedaschallengetestmaterialinfollowingexperimentandprovidedfoundationforstudyingprocessingtomatoresistcucumbermosaicvirus.Keywords Cucumbermosaicvirus;Homology;RNAivector;Tobacco;Transformation

  Cucumbermosaicvirus(CMV)isanimportantpathogentocauseyieldreductionandevennoharvestofavarietyofeconomiccrops,butthetraditionalantivirusbreeding,tissuedetoxificationandpesticidepreventionmethodscauseenvi

[1]

ronmentalpollution,andtimeconsuming.Inrecentyears,thediscoveredphenomenonofgenesilencingisacommonphenomenonexistedintheprocessofbiologicallife,whichisanimportantwayoftheregulationofgeneexpression.ThegenesilencingofGMspecificcanbetransmittedbygraftingfromsilentstocktononsilentscion,thenthephenomenonofthetransferringofthiskindofgenesilencingsignalfromonecelloratissuetoanothercellortissueisdefinedassystemic

[2-5]

RNAi(RNAinterference).RNAihassomeadvantageswhicharedeficientinthetraditionalgeneticresearchmethods,ithasprovidedanewwaytostudyplantgenefunctionandgeneexpressionregulation,andthefunctionaldeletantcanbecreatedthroughtheselectivelyinhabitationsoftheex

[6]

pressionofspecificgenes.Combinedwiththespecific,effi

,RNAitechnologyhasacientandsystematicRNAisequence

,ithasbeendemonstrateditsuniqueroleparticularlyspecialrole

inthepreventionandtreatmentofviruses,wormsandharmful

[7-8]

parasites,aswellasgraftingbreeding.

Atpresent,theresistanceresearchesonCMVarefocusedonreplicaseproteinencodedbyRNA1genomeorCPproteinencodedbyRNA3subgenomic.Inthisstudy,basedonthepreclonedCMVRNA2genomesequence,the2areplicaseproteinwhichwasencodedbyRNA2genomewasusedtodesignRNAiantiviralvector,theconstructedRNAivectorwastransformedtotobaccothroughAgrobacteriummediated

,andtheantiviralabilityoftransgenictobaccoplantsmethod

wasobtainedbychallengetesttodeterminewhethertheprocesscanbeappliedtotomatoproduction.

Received:May26,2010  Accepted:June29,2010SupportedbyInternationalScienceandTechnologyCooperationProgram(2008DFA30560);PreliminaryResearchSpecialFoundationof973Program(2008CB117018);ScientificResearchProjectforHighLevelofTalentsofShiheziUniversity(RCZX200732).

orrespondingauthor.Email:xbc@shzu.edu.cnC

MaterialsandMethods

Materials

piRDG12andpBi35SG12weresavedbyKeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity;EscherichiacoliTOP10competentcellwaspurchasedfromShanghaiBioengineeringCompany;planttotalRNAextractionkitwaspurchasedfromTiangengBiotechnologyCompany;AMVreversetran

,TNAligase,andPCRproductextractionkitscriptase4D

werepurchasedfromPromegaCorporation.RestrictionenzymeswerepurchasedfromShanghaiBioengineeringCompany.TomatocucumbermosaicvirusisolatesNS04wassavedbyKeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity.MethodsTotalRNAextractionoftobaccoplants TotalRNAwasextractedformNicotianaglutinosawhichhadsavedtomatoNS04isolates,andtheextractionmethodwasinaccordancewithRNAsimpleTotalRNAKitmanualoperationfromTiangengBiotechnologyCompany.Primersdesignandsynthesis BasedonthesequencesinGenbank,theVectorNTIwasusedfortheprimersdesignandsynthesis,andtheprimersusedinthisstudyweresynthesizedbyShanghaiBiologicalEngineeringCompany.

Table1 PrimerandsequenceforPCRamplificationPrimernamePrimersequenceCMV2SP1CMV2ASP2CMV2SP3CMV2ASP4CR2BgCR2KpCR2SB

GTTTATTTACAAGAGCGTACGGTTCAATCTCGAAGGCATCTCTGGAAGTATAACCTCCCAGTTCTCACC

GGATGGACAACCCGTTCACC

GGAGATCTGTTTGCTCACTTCATG  BglIIGGGTACCGAATGACTCAGTCTT  KpnIGGGAGCTCGGATCCCGTTCACCGTGAAAACGT

RNA2genomeamplificationandsequenceanalysisof

CMV TheextractedtotalRNAwasusedforthereversetran

抗黄瓜花叶病毒RNAi载体的构建及烟草的转化.doc 将本文的Word文档下载到电脑

精彩图片

热门精选

大家正在看

× 游客快捷下载通道(下载后可以自由复制和排版)

限时特价:7 元/份 原价:20元

支付方式:

开通VIP包月会员 特价:29元/月

注:下载文档有可能“只有目录或者内容不全”等情况,请下载之前注意辨别,如果您已付费且无法下载或内容有问题,请联系我们协助你处理。
微信:fanwen365 QQ:370150219