抗黄瓜花叶病毒RNAi载体的构建及烟草的转化(3)

2021-09-24 20:08

)sequenceanalysissoftwarewasusedforsequenceBiosoft

[9]

analysisandevolutiontreeconstruction.PCRamplificationofRNAiinterferencefragments ThesequencedRNA2genomesequencewasanalyzedandtheconservedregionsindentifiedtodesignandsynthesizeprim?,andthegenefragmentpreservedontheT?vectorwasersusedasatemplate,thetwopairsofprimersCR2?Kp/CR2?SBandCR2?Bg/CR2?SBwereusedtoamplifytheinterferenceAgriculturalScience&TechnologyVol.11,No.5,2010

acidhomologywasof71.3%-98.8%and74.0%-98.5%

(Table3),inwhichtheNS04isolatehadhighhomologywithPhylineswhichwasfromZhejiangofChina,theGenbanknumberwasDQ412731(Fig.2),thenucleotideandamin

fragmentPCR_CR2_BKandPCR_CR2_SB.ConstructionofpBi35SCR2expressionvector AftertheamplifiedPCR_CR2_BKwasrecoveredwithBamHⅠandKpnⅠd

igestion,thecorrespondingdigestedpiRDG12siteswereinserted

,andthenthepiRD_CR2.Sfirstintermediatevectorwasobtained(Fig.1A).TheamplifiedPCR_CR2_SBwasrecoveredwithBglⅡandSacⅠd

igestion,andthecorre?spondingdigestedpiRD_CR2.Ssiteswereinserted

,andthenthepiRD_CR2secondintermediatevectorwasgained(Fig.1B).AfterthepiRD_CR2vectorwasdigestedwithXbaⅠandEcoRⅠ,thesmallfragmentwasinsertedwiththecorrespond?ingsitesofdigestedpBi35SG12,andfinallythepBi35SCR2

expressionvectorwasobtained(

Fig.1C),thedesignofvec?torwascompletedwithVectorNTIassist

Fig.1 ConstructionofpiRD?CR2.S(A),piRD?CR2(B)and

pBi35SCR2

(C)expressionvectorGenetictransformationtotobacco Theconstructed

pBi35SCR2expressionvectorwastransformedintoAgrobac?teriumtumefaciensGV3101,theNicotianatobacco(Nt)leav?eswerecutinto1cmofleafdisc,whichwerethenmixedwithAgrobacteriuminfectionliquidfor5-10minofsoaking,the

excessbacterialiquidwasremovedanddried,andthentheywereplacedontheco?culturemedium(

MS+0.5mg/Lof6?BA),aftercultivatedindarkfor1-3d,theyweretrans?

ferredtothedifferentiationmedium(

MS+0.5mg/Lof6?BA+50.0mg/Lof

Kan+300.0mg/LofCar)fortheinductionofregenerationbud.Whentheregeneratedshootlengthwasabout1.5-2.0cm,theregenerationshootwascutoffand

transferredtorootingmedium(

MS+0.1mg/LofIAA+50.0mg/LofKan+300.0mg/LofCar)fortheinductionofroots.

ResultsandAnalysis

CloningandsequenceanalysisofCMVRNA2genome

PrimersCMV2SP1/CMV2ASP2,CMV2SP3/CMV2ASP4

wereusedtoamplifythefragmentsof1553and1378bp

,af?terthealignmentsandsplicing,partsofCMVRNA2genomicfragmentwith2864bpwereobtained,andthesepartscon?tainedthenucleotidesequencewhichcouldencodeCMV2a

replicaseproteinandCMV2bprotein

,bytheuseofDNAMANsoftware,thecomparisonofCMV2afragmentsofNS04iso?lateandotherisolates(GenbanknumberandoriginwereshowninTable2)suggestedthattheirnucleotideandamino

抗黄瓜花叶病毒RNAi载体的构建及烟草的转化(3).doc 将本文的Word文档下载到电脑 下载失败或者文档不完整,请联系客服人员解决!

下一篇:化工企业安全管理规定

相关阅读
本类排行
× 注册会员免费下载(下载后可以自由复制和排版)

马上注册会员

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: QQ: