71沉默CCR和CAD基因培育低木质素含量转基因多年生黑麦草
本文关键词:沉默CCR和CAD基因培育低木质素含量转基因多年生黑麦草,由笔耕文化传播整理发布。
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[],17héveninJPolletB,LetarnecB,etal.ThesimultaneousreressionofCCRandCAD,twoenzmesofthelininbiosn T -pygy
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第22卷第5期草业学报2013年83
Geneticimrovementofrerasswithlowlinincontenterennial pyggp
bsilencinofCCRandCADenes ygg
1,21,211,21,,HU KeYANXuefenLIDanTANGXiaoeiYANG Hon - -m ,g,g,
111,,WANG YanDENG HonMA Xinronuan--ggy
(,,;1.ChenduInstituteofBioloChineseAcademofSciencesChendu610041,China ggyyg
,)2.GraduateUniversitofChineseAcademofSciencesBeiin100049,China yyjg
:,AbstractLinin,oneofthemaincomonentsinvascularlantsismainlresentinthewallsofsecondaril gppypy
,,thickenedcells.Howeveritisalimitinfactorinanumberofaroindustrialsuchaschemicalrocessesul - -ggpp
,,foraediestibilitandlinocellulosictobioethanolconversion.CinnamolCoAreductase(CCR)andin -- ggygypg
enultimatecinnamlalcoholdehdroenase(CAD)aretwokeenzmesthatcatalsetheandultimatestes yygyyypp
resectivelinthebiosnthesisofmonolinols.BasedontheCCRandCADgseuencesofeneerennial pyygqp
,Lolium erenne)from NCBIsecificweredesinedtoaddaroriaterestrictionenzmerimersrerass( pgpppypygp
sitestoamlifandclonethetwoframentsfromcDNAofrerass.TwoRNAinterferenceeneerennial pygyggp
()RNAivectors(iCCRandiCAD)wereconstructedusininversereeatframents.Theconstructs2323- - gpgpp
wereintroducedintoembroeniccallioferennialrerassbArobacterium-mediatedtransformationwith ygpygyg
EHA105.ThearomomcinwerescreenedusinanddetectedbPCR,andindeendentiCCRandiCAD - -ypygyp
lantswereobtained.Analsisofrelativelinincontentwasconductedbconventionalmethods.transenic pygyg
Thelinincontentwasdistinctlreducedcomaredwiththatofwildcontrolsin9plantsofiCCRand11plants - gyp
ofiCADtranseniclinincontentoftheseiCCRandiCADwasreducedb34.67%andlants.Thelants - - - ggypp
33.86%resectivel.Thelantsrew transenichadnormalmorholoandwell.Thisstudshowedthat pypggpgyy
linincontentrerasscouldbeobtainedbsilencinCCRandCADgexressionandhaslowerennialenero-- -gygygppp
vidednovelermlasmsforbreedindiestibleandimrovedabsortionrerass. gpggppyg
:;;LKewordslinin;cinnamolCoAreductase(CCR)cinnamlalcoholdehdroenase(CAD)olium e -gyyygpy
;renne;RNAitransformationenetic g
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本文关键词:沉默CCR和CAD基因培育低木质素含量转基因多年生黑麦草,由笔耕文化传播整理发布。
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