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1、第27卷第3期廣西農(nóng)業(yè)生物科學(xué)2008年9月Vol127,No13JournalofGuangxiAgric1andBiol1ScienceSept1,2008文章編號(hào):100823464(2008)0320218205農(nóng)桿菌介導(dǎo)的木薯轉(zhuǎn)基因研究初報(bào)12121覃艷,何勇強(qiáng),農(nóng)友業(yè),姜伯樂(lè),吳子愷(1廣西大學(xué)農(nóng)學(xué)院,廣西南寧530005;2廣西大學(xué)生命科學(xué)與技術(shù)學(xué)院,廣西南寧530005)摘要:將米曲霉植酸酶基因phyA克隆于植物表達(dá)載體pBI121的CaMV35S啟動(dòng)子(P35S)下游,構(gòu)建了含有P35S2phyA2TNOS表達(dá)盒的重組質(zhì)粒pBI2phyA,并用電脈沖法將其導(dǎo)入大腸桿菌
2、中。通過(guò)三親接合將pBI2phyA質(zhì)粒由大腸桿菌導(dǎo)入根癌農(nóng)桿菌LBA4404菌株,獲得帶有phyA基因的根癌農(nóng)桿菌工程菌株LBA4404/pBI2phyA。用LBA4404/pBI2phyA轉(zhuǎn)化木薯外植體652個(gè),在含100mg/L卡那霉素和250mg/L氨芐青霉素的MS分化培養(yǎng)基上誘導(dǎo)分化芽,獲得24株抗卡那霉素轉(zhuǎn)化苗。以轉(zhuǎn)化苗和未轉(zhuǎn)化植株的總DNA為模板,用phyA基因的同源序列為引物,進(jìn)行聚合酶鏈?zhǔn)椒磻?yīng)(PCR),結(jié)果表明9株轉(zhuǎn)化苗的PCR結(jié)果為陽(yáng)性,初步證明目的基因phyA已經(jīng)轉(zhuǎn)入木薯中。關(guān)鍵詞:植酸酶基因;根癌農(nóng)桿菌;木薯;轉(zhuǎn)基因中圖分類號(hào):Q94312文獻(xiàn)標(biāo)識(shí)碼:APrel
3、iminaryreportongenetictransformationofcassavamediatedbyAgrobacteriumtumefaciens12121QINYan,HEYong2qiang,NONGYou2ye,JIANGBo2le,WUZi2kai(1CollegeofAgriculture,GuangxiUniversity,Nanning530005,China;2CollegeofLifeScienceandTechnology,GuangxiUniversity,Nanning530005,China)Abstract:TheAspergillusoryza
4、ephytasegenephyAwasclonedintothesiteofdownstreamtheCaMV35Spromoter(P35S)oftheplantexpressionvectorpBI121,generatingarecombinantplasmidpBI2phyAcontainingtheexpressioncassetteP35S2phyA2TNOS1pBI2phyAwasthenintroducedintotheEscherichiacolicellsbyelectroporation1ThegeneticengineeringAgrobacteriumtume
5、faciensstrainLBA4404/pBI2phyAwasconstructedbyintroducingtheplasmidpBI2phyALBA4404fromE1coli/pBI2phyAviatriparentalconjugation1652explantsofcassava(ManihotesculentaCrantz)wereco2culturedwithLBA4404/pBI2phyA1RegeneratedshootswereselectedoutonMSmediumsupplementedwith100mg/Lkanamycinand250mg/Lampici
6、lin124putativetransgenicplantswereobtained1ThetotalgenomicDNAsoftheseregeneratedplantsanduntransformedplantsweredetectedwithpolymerasechainreaction(PCR)1Theresultindicatedthat9oftheseregeneratedplantscontainedphyAgene1Keywords:phytasegene;Agrobacteriumtumefaciens;cassava;genetictransformation木薯(
7、ManihotesculentaCrantz)是熱帶地區(qū)重要的糧食作物之一,在我國(guó)主要分布于廣西、廣收稿日期:2007211223;修回日期:2007212203?;痦?xiàng)目:廣西科學(xué)研究與技術(shù)開(kāi)發(fā)計(jì)劃(桂科基0009017)。作者簡(jiǎn)介:覃艷(19792),女(壯族),廣西南寧人,碩士,現(xiàn)在廣西玉林市玉州區(qū)農(nóng)業(yè)局工作;E2mail:qinyan222@1631com。通訊作者:何勇強(qiáng),教授,博士生導(dǎo)師;E2mail:yqhe@gxu1edu1cn