根癌农杆菌对甘蓝型油菜的转化及转基因植株的再生

被引:98
|
作者
程振东
卫志明
许智宏
机构
[1] 中国科学院上海植物生理研究所植物分子遗传国家重点实验室!上海
关键词
甘蓝型油菜; 根癌农杆菌; 转基因植株;
D O I
暂无
中图分类号
Q943.1 [植物细胞的离体培养];
学科分类号
摘要
用根癌农杆菌(Agrobacterium tum efaciens)共培养法把外源基因导入甘蓝型油菜(Brassi-ca napusL.)主要栽培品种“云北2 号”,获得转基因植株。所用外植体为带有1—2 m m 子叶柄的完整子叶,根癌农杆菌为A208SE(pTiT37-SE, pROA93)。Ti质粒pROA93 带有NPTⅡ及GUS嵌合基因。共培养2 天后转到附加25 m g/L卡那霉素的分化培养基(MS+ 4.5 m g/LBAP)上。AgNO3 和羧苄青霉素促进芽的分化,头孢霉素则有抑制作用。最高转化频率为27% 。把分化出的茎芽切下,插入含有25 m g/L卡那霉素的生根培养基中。羧苄青霉素不利于根的形成。把完整抗性植株移入盛土壤的盆中,生长状况良好。测定β-葡糖苷酸酶活性,84% 明显高于对照。以NPTⅡ基因作探针进行Southern blot分析,证实外源基因已插入到植物细胞基因组中
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页码:657 / 663+737 +737
页数:8
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