抗黄瓜花叶病毒RNAi载体的构建及烟草的转化(2)
时间:2025-03-12
时间:2025-03-12
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scriptionandsynthesisoffirststrand.Andthenthefirststrand
,theamplificationwascarriedoutbythewasusedasatemplate
useoftheCMV2SP1/CMV2ASP2,CMV2SP3/CMV2ASP4ofthedesignprimersCMVRNA2,afterthesequencingoftheamplifiedsequence,theDNAMAN(Version5.2.2,Lynnon
)sequenceanalysissoftwarewasusedforsequenceBiosoft
[9]
analysisandevolutiontreeconstruction.PCRamplificationofRNAiinterferencefragments ThesequencedRNA2genomesequencewasanalyzedandtheconservedregionsindentifiedtodesignandsynthesizeprim,andthegenefragmentpreservedontheTvectorwasersusedasatemplate,thetwopairsofprimersCR2Kp/CR2SBandCR2Bg/CR2SBwereusedtoamplifytheinterferenceAgriculturalScience&TechnologyVol.11,No.5,2010
acidhomologywasof71.3%-98.8%and74.0%-98.5%
(Table3),inwhichtheNS04isolatehadhighhomologywithPhylineswhichwasfromZhejiangofChina,theGenbanknumberwasDQ412731(Fig.2),thenucleotideandamin
o
fragmentPCR_CR2_BKandPCR_CR2_SB.ConstructionofpBi35SCR2expressionvector AftertheamplifiedPCR_CR2_BKwasrecoveredwithBamHⅠandKpnⅠd
igestion,thecorrespondingdigestedpiRDG12siteswereinserted
,andthenthepiRD_CR2.Sfirstintermediatevectorwasobtained(Fig.1A).TheamplifiedPCR_CR2_SBwasrecoveredwithBglⅡandSacⅠd
igestion,andthecorrespondingdigestedpiRD_CR2.Ssiteswereinserted
,andthenthepiRD_CR2secondintermediatevectorwasgained(Fig.1B).AfterthepiRD_CR2vectorwasdigestedwithXbaⅠandEcoRⅠ,thesmallfragmentwasinsertedwiththecorrespondingsitesofdigestedpBi35SG12,andfinallythepBi35SCR2
expressionvectorwasobtained(
Fig.1C),thedesignofvectorwascompletedwithVectorNTIassist
.
Fig.1 ConstructionofpiRDCR2.S(A),piRDCR2(B)and
pBi35SCR2
(C)expressionvectorGenetictransformationtotobacco Theconstructed
pBi35SCR2expressionvectorwastransformedintoAgrobacteriumtumefaciensGV3101,theNicotianatobacco(Nt)leaveswerecutinto1cmofleafdisc,whichwerethenmixedwithAgrobacteriuminfectionliquidfor5-10minofsoaking,the
excessbacterialiquidwasremovedanddried,andthentheywereplacedonthecoculturemedium(
MS+0.5mg/Lof6BA), …… 此处隐藏:2330字,全部文档内容请下载后查看。喜欢就下载吧 ……