抗黄瓜花叶病毒RNAi载体的构建及烟草的转化
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AgriculturalScience&Technology,2010,11(5):69-72Copyright2010,InformationInstituteofHAAS.Allrightsreserved.
PlantProtection
ConstructionofRNAiVectorWhichResistCucumberMosaicVirusandTransformationofTobacco
ZHANGYu,ZHENGYinying,ZHAOFengyu,QIAOYahong,CUIBaiming,XIANGBenchun
KeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity,Shihezi832003
Abstract [Objective]AimedtoconstructRNAivectorresistanttocucumbermosaicvirusandtransferredthisvectorintotobacco.[Method]RTPCRmethodwasusedtoamplifycucumbermosaicvirusNS04andprocessRNA2genesequenoftomatoisolates.TheanalysisresultsofphylogenetictreedemonstratedthatthesequenceinRNA2encodedCMV2ahad98.0%and96.5%homologywithnucleotideandaminoacidof
,China.ThereplicasefragmentinCMVRAN2genewastakenastargetsequencetoconstructpBi35SCR2eukaryDQ412731isolateofZhejiang
oticexpressionvector,thentheexpressionvectorwasidentified.Throughagrobacteriummediatedmethod,theexpressionvectorwastransferredintotabaccoandPCRmethodwasusedtocheckthetransfer.ThePCRresultsdemonstratedthattheexperimenthadsuccessfullyconstructeukaryoticexpressionvectorofpBi35SCR2andtheexpressionvectorwassuccessfullytransferredintotabacco.[Conclusion]Theobtainedtransgenictobaccocouldbeusedaschallengetestmaterialinfollowingexperimentandprovidedfoundationforstudyingprocessingtomatoresistcucumbermosaicvirus.Keywords Cucumbermosaicvirus;Homology;RNAivector;Tobacco;Transformation
Cucumbermosaicvirus(CMV)isanimportantpathogentocauseyieldreductionandevennoharvestofavarietyofeconomiccrops,butthetraditionalantivirusbreeding,tissuedetoxificationandpesticidepreventionmethodscauseenvi
[1]
ronmentalpollution,andtimeconsuming.Inrecentyears,thediscoveredphenomenonofgenesilencingisacommonphenomenonexistedintheprocessofbiologicallife,whichisanimportantwayoftheregulationofgeneexpression.ThegenesilencingofGMspecificcanbetransmittedbygraftingfromsilentstocktononsilentscion,thenthephenomenonofthetransferringofthiskindofgenesilencingsignalfromonecelloratissuetoanothercellortissueisdefinedassystemic
[2-5]
RNAi(RNAinterference).RNAihassomeadvantageswhicharedeficientinthetraditionalgeneticresearchmethods,ithasprovidedanewwaytostudyplantgenefunctionandgeneexpressionregulation,andthefunctionaldeletantcanbecreatedthroughtheselectivelyinhabitationsoftheex
[6]
pressionofspecificgenes.Combinedwiththespecific,effi
,RNAitechnologyhasacientandsystematicRNAisequence
,ithasbeendemonstrateditsuniqueroleparticularlyspecialrole
inthepreventionandtreatmentofviruses,wormsandharmful
[7-8]
parasites,aswellasgraftingbreeding.
Atpresent,theresistanceresearchesonCMVarefocusedonreplicaseproteinencodedbyRNA1genomeorCPproteinencodedbyRNA3subgenomic.Inthisstudy,basedonthepreclonedCMVRNA2genomesequence,the2areplicaseproteinwhichwasencodedbyRNA2genomewasusedtodesignRNAiantiviralvector,theconstructedRNAivectorwastransformedtotobaccothroughAgrobacteriummediated
,andtheantiviralabilityoftransgenictobaccoplantsmethod
wasobtainedbychallengetesttodeterminewhethertheprocesscanbeappliedtotomatoproduction.
Received:May26,2010 Accepted:June29,2010SupportedbyInternationalScienceandTechnologyCooperationProgram(2008DFA30560);PreliminaryResearchSpecialFoundationof973Program(2008CB117018);ScientificResearchProjectforHighLevelofTalentsofShiheziUniversity(RCZX200732).
orrespondingauthor.Email:xbc@shzu.edu.cnC
MaterialsandMethods
Materials
piRDG12andpBi35SG12weresavedbyKeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity;EscherichiacoliTOP10competentcellwaspurchasedfromShanghaiBioengineeringCompany;planttotalRNAextractionkitwaspurchasedfromTiangengBiotechnologyCompany;AMVreversetran
,TNAligase,andPCRproductextractionkitscriptase4D
werepurchasedfromPromegaCorporation.RestrictionenzymeswerepurchasedfromShanghaiBioengineeringCompany.TomatocucumbermosaicvirusisolatesNS04wassavedbyKeyLaboratoryofAgricultrureBiotechnologyofShiheziUniversity/CollegeofLifeSciences,ShiheziUniversity.MethodsTotalRNAextractionoftobaccoplants TotalRNAwasextractedformNicotianaglutinosawhichhadsavedtomatoNS04isolates,andtheextractionmethodwasinaccordancewithRNAsimpleTotalRNAKitmanualoperationfromTiangengBiotechnologyCompany.Primersdesignandsynthesis BasedonthesequencesinGenbank,theVectorNTIwasusedfortheprimersdesignandsynthesis,andtheprimersusedinthisstudyweresynthesizedbyShanghaiBiologicalEngineeringCompany.
Table1 PrimerandsequenceforPCRamplificationPrimernamePrimersequenceCMV2SP1CMV2ASP2CMV2SP3CMV2ASP4CR2BgCR2KpCR2SB
GTTTATTTACAAGAGCGTACGGTTCAATCTCGAAGGCATCTCTGGAAGTATAACCTCCCAGTTCTCACC
GGATGGACAACCCGTTCACC
GGAGATCTGTTTGCTCACTTCATG BglIIGGGTACCGAATGACTCAGTCTT KpnIGGGAGCTCGGATCCCGTTCACCGTGAAAACGT
RNA2genomeamplificationandsequenceanalysisof
CMV TheextractedtotalRNAwasusedforthereversetran
70
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),aftercultivatedindarkfor1-3d,theyweretrans
ferredtothedifferentiationmedium(
MS+0.5mg/Lof6BA+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
,afterthealignmentsandsplicing,partsofCMVRNA2genomicfragmentwith2864bpwereobtained,andthesepartscontainedthenucleotidesequencewhichcouldencodeCMV2a
replicaseproteinandCMV2bprotein
,bytheuseofDNAMANsoftware,thecomparisonofCMV2afragmentsofNS04isolateandotherisolates(GenbanknumberandoriginwereshowninTable2)suggestedthattheirnucleotideandamino
Fig.2 PhylogenetictreeofthenucleotidesequenceofCMV
2aisolates
acidhomologywere98.0%and96.5%respectively.
Table2 TheGenbanknumberofdifferentCMVisolationsGenbanknumberOrigin
IsolationsAB368500JapanCMVPfAB079890JapanCMV36a1AB179765JapanCMVD8AB368497JapanCMV42CMDQ399549ZhejiangProvinceofChinaCMVBXDQ412731ZhejiangProvinceofChinaCMVPhyEF213024ZhejiangProvinceofChinaCMVCTLAM183115SpainCMVPl1AB183118SpainCMVRi8EF202596ZhejiangProvinceofChinaCMVTshD10209JapanCMVOD86330BeijingofChinaCMVSDEU665001BeijingofChinaUnknownS72187UnknownCMVKEU723570ZhejiangProvinceofChinaCMVPHzFJ268745ZhejiangProvinceofChinaCMVCah1AJ276480
Korea
CMVMf
PCRamplificationofinterferingfragments
ThesequencewhichwasconnectedtotheTcloningvectorandhadcorrectalignmentwiththeNCBIdatabasedatawasusedasthetemplate.Bytheuseofthedesignedprimers
CR2Kp/CR2SBandCR2Bg/CR2SB
,thePCR_CR2_BKfragmentwith693bpandPCR_CR2_SBfragmentwith741bpwereamplified(Fig.3,4).ThetwoendsofthePCR_CR2
BKwereintroducedtworestrictionsitesofBamHⅠandKpnⅠ
,whileBglⅡandSacⅠrestrictionsiteswereintroducedtothetwoendsofPCR_CR2_SBtofacilitatetheconstructionoffollowupvector.ConstructionandidentificationofpBi35SCR2expressionvector
AftertheconnectionofPCRCR2BKandpiRDG12,a
4763bpofpiRDCR2.Sintermediatevectorwasobtained
,therewasaClaIrestrictionsiteintheconnectedPCRCR2BKfrag
ment,anda4763bpbandwasgainedbysingleenzymedigestion,indicatingthatPCRCR2BKhadconnectedwiththevector(Fig.5).AftertheconnectionofPCRCR2SBfragmentsandintermediatevectorpiRDCR2.S,piRDCR2wasobtained,finally
ZHANGYuetal.ConstructionofRNAiVectorWhichResistCucumberMosaicVirusandTransformationofTobacco71
thefragmentcontainedPCRCR2BKandPCRCR2SBwasdigestedfrompiRDCR2andconnectedtothepBi35SG12togain
(11248bp),andthefragthepBi35SCR2expressionvector
1
2
3
4
5
6
7
8
9
mentsof1409and9839bpcouldbeobtainedbyBamHingleⅠs
,therefore,thepBi35SCR2expressionvectorenzymedigestion
wassuccessfullyconstructed(Fig.6).
%
15
16
17
18
19
10
11
12
13
14
Table3 PercentageofnucleotideandaminoacidsequenceidentitiesofCMV2ageneofCMVisolations
AJ27648075.298.192.697.093.888.994.475.293.098.599.196.797.893.693.193.986.293.2
AB17684871.975.674.775.075.674.075.797.675.075.775.875.375.475.475.175.071.374.9AB36850096.971.992.697.293.988.794.475.693.098.798.496.898.093.893.193.686.393.6FJ26874591.272.290.791.795.688.495.974.694.893.093.091.792.595.198.195.585.595.1AB07989096.771.896.590.693.189.094.075.192.497.497.498.597.493.692.293.386.792.9AB17976592.372.092.093.691.788.998.575.097.393.994.093.094.096.596.397.686.296.3EU72357088.571.288.087.788.187.989.573.988.389.489.389.189.089.489.088.994.888.8S7218792.172.192.093.892.097.187.975.198.494.694.693.994.597.396.698.086.697.2EU66500171.897.971.872.371.971.871.371.774.475.775.875.475.274.775.074.971.374.6D8633091.771.691.493.491.396.887.598.871.493.293.292.393.195.895.596.985.495.8D1020997.572.697.291.196.992.388.392.472.491.898.897.398.794.393.393.886.993.9AB36849798.372.296.891.196.691.988.291.872.091.397.697.298.194.093.294.286.793.6EF20259695.972.095.790.598.491.488.191.672.091.096.296.097.293.592.293.286.893.0AM18311897.272.396.991.196.992.388.492.472.191.898.197.196.194.092.993.686.593.6AM18311592.372.291.693.391.494.187.994.371.993.791.891.891.192.195.396.086.495.4EF21302490.972.190.995.990.693.186.893.271.892.890.990.790.491.192.396.486.195.9DQ41273191.871.991.493.391.496.887.696.771.796.391.991.591.192.094.093.186.296.5DQ39954988.371.987.887.588.088.096.588.071.987.588.388.188.288.287.987.087.686.0
7.5NS04CMV2a91.972.091.693.691.694.887.595.271.894.791.991.491.492.193.493.495.08
Thedownleftisnucleotideidentities,theupperrightisaminoacididentities.1-19arecorrespondingwiththesequenceNo.intheleftoffigurefromuptobottom
.
M:DL2000;1:CR2BKsequence.Fig.3 PCRamplificationofCR2B
K
M:DL4500;1:piRDCR2.SwithClaI.
Fig.5 Therestrictionenzymedigestionofrecombinantplas
midpiRDCR2.
S
M:DL2000;1:CR2BKsequence.
Fig.4 PCRamplificationofCR2SB
ObtainingoftransgenictobaccoplantsTransgenictobaccoplantsDNAwasextracted,andthentheamplificationwascarriedoutbyprimersCR2Kp/CR2SB
,the1.2%ofagarosegelandCR2Bg/CR2SBrespectively
,itcouldbeconcludedelectrophoresiswasusedforanalysis
thatthePCR_CR2_BKfragmentwith693bpandthePCR_CR2_SBfragmentwith741bpwereamplified(Fig.7,8)
,
M:DL4500;1:pBi35SCR2withBamHⅠ.
Fig.6 Therestrictionenzymedigestionofrecombinantplas
midpBi35SCR2
indicatingthattheobtainedtobaccoplantshadbeensuccess
fullytransformedintothepBi35SCR2expressionvectorAgrobacteriummediatedmethod.
72AgriculturalScience&TechnologyVol.11,No.5,2010
[10]
.Theconstructedexprestheefficiencyofgenesilencing
icotianatosionvectorpBi35SCR2wastransformedintotheN
baccowithAgrobacteriummediatedmethod,theobtainedtransgenictobaccoplantscouldbeobservedontheantiviralabilityoftransgenictobaccoplantsbychallengetest,ifthe
,itcouldbefurtherappliedtotomatoproeffectwasobvious
cessing,whichhadlaidthefoundationfortheantiCMVprocessingtomatoplants.
M:DL2000;1:pBi35SCR2vectorcontrol;2-5:pBi35SCR2vec
tortransgenictobaccolines;6:PBI121transgenictobacco.Fig.7 PCRidentificationofCR2_BKfragmentintransgenicto
baccoplant
s
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Discussions
TheCMVRAN2genomesequenceofCMVNS04isolates
,andthefunctionalgenesequenceawasclonedinthisstudy
lignmentandphylogeneticanalysisshowedthatthecucumbermosaicvirusCMVNS04isolatesofXinjianghadahighernucleotideandaminoacidhomologywithDQ412731isolates
,Zhejiang,whichreached98.0%and96.5%refromChina
spectively.Inthisstudy,theconservedsequencesinCMVRNA2genomewhichwaslessstudiedwasselectedasthetar
,andvectorwouldformhpRNAgetsequenceofRNAivector
structureaftertranscription,andthehpRNAstructureincluded
,andtherewasaringstructureofasenseandantisensearms
about50bpbetweenthetwoarms,whichhelpedtoimprove
Responsibleeditor:LITingting
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NAi摘要)[&'\]^_R`a1bcUde1fg(
张瑜,郑银英,赵峰玉,乔亚红,崔百明,向本春 (ãä+X%åæ3 z¦§¨©,ãä+X%3 %&,âçãä
32003)+8
[NAi41]èéê>?ë{ìíRîï,«Õîïðñòó。[T-PCRõÂ,S04NA2MVRAN256]ô Rö÷>?ë{ìíNø$ùú¢ª 5Rûüý5ÐÑ。ÈþCûüýs5ÿ!"#$ L
Bi35SCR2CR5õÂÃÄîï ,%ÐÑ,èép¶&º'îï,«=º'îï()¬G;½¾åZ4*+5õÂÕº'îïðñòó, P
ðñ。[RNA2MV2aQ412731¢ª ~6w&78n9û87 :,78]-. #¸¢Ò/ º0,s12C5ÐÑ s3455D¢;'¼98.0%[96.5%;PCR/ º0,Bi35SCR2<¨=>èéÜp¶&º'îï,«=>Õº'îïðñòó。[],79<¨É»5ðûüòóÊ L?@Aí<¨5B «L ø$ùúê>?ë{ìíCGÜûD。
RNAi:;< >?ë{ìí;7 :;îï;òó;ð#
2008DFA30560);973计划前期研究专项(2008CB117018);石河子大学高层次人才科研启动项目(RCZX200732)。XYZ4 国际科技合作项目(
1984-),女,黑龙江哈尔滨人,硕士研究生,研究方向:植物基因工程。通讯作者,教授,博士生导师。=>?@ 张瑜(0100526 DEBC 20100629-ABC 2
抗黄瓜花叶病毒RNAi载体的构建及烟草的转化
作者:作者单位:刊名:英文刊名:年,卷(期):被引用次数:
张瑜, 郑银英, 赵峰玉, 乔亚红, 崔百明, 向本春, ZHANG Yu, ZHENG Yin-ying,ZHAO Feng-yu, QIAO Ya-hong, CUI Bai-ming, XIANG Ben-chun
石河子大学农业生物技术重点实验室,石河子大学生命科学院,新疆石河子,832003农业科学与技术(英文版)
AGRICULTURAL SCIENCE & TECHNOLOGY2010(5)2次
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