利用农杆菌介导的共转化法获得含双Bt基因转基因水稻
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S511.035.3

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吉林省科技发展计划项目(201205068);农业部转基因生物新品种培育科技重大专项(2011ZX08001-001);吉林省留学回国人员择优资助项目(RL201322)


Development of Transgenic Rice Plants Harboring Two Bt Genes by Agrobacterium-Mediated Co-Transformation
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    摘要:

    利用农杆菌介导的共转化法,将分别携带不同Bt抗虫基因Cry1C*Cry2A*的两个植物表达载体同时导入吉林省主栽超级粳稻品种吉粳88中,获得598株草丁膦(Basta)抗性独立转化植株。以Cry1C*Cry2A*特异性引物对独立转化植株进行双引物PCR扩增,结果得到35株Cry1C*Cry2A*基因双阳性植株,双基因共转化率为6.28%。以目的基因Cry1C*Cry2A*为探针进行Southern blot分析,获得3个双基因单拷贝株系。利用RT-PCR检测Bt基因在这3个株系中的mRNA表达情况,结果表明两个Bt基因在转录水平上同时得到了有效表达。

    Abstract:

    Two Bacillus thuringiensis Cry1C* and Cry2A* genes(Bt) on individual plasmids were simultaneously introduced into Japonica rice variety ‘Jijing 88’ by Agrobacterium-mediated co-transformation. Five hundred and ninety eight independent basta-resistance transgenic plants were obtained by 30 mg/L basta-screening.PCR verification revealed that 35 were co-transgenic plants harboring the two Bt genes, and the co-transformation frequency was 6.28%. Three of two-Bt gene single copy insertion lines were identified among 35 co-transgenic lines by Southern blot analysis. RT-PCR analysis demonstrated that the two Bt transgenes were simultaneously expressed in these 3 lines at the transcription level.

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金永梅,马瑞,于志晶,林秀峰.利用农杆菌介导的共转化法获得含双Bt基因转基因水稻[J].东北农业科学,2014,39(5):26-29.

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  • 收稿日期:2014-03-10
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  • 在线发布日期: 2024-12-06
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