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园艺学报 ›› 2002, Vol. 29 ›› Issue (3): 224-228.

• 研究论文 • 上一篇    下一篇

大白菜转修饰豇豆胰蛋白酶抑制剂基因获得抗虫植株

杨广东1,2;朱􀀁祯3;李燕娥2;朱祝军1;肖桂芳3;魏晓丽3   

  1. (1 浙江大学园艺系, 杭州 310029; 2山西农业科学院棉花研究所, 运城 044000; 3中国科学院遗传研究所, 北京 100101)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-06-25 发布日期:2002-06-25

Obtaining Transgenic Plants of Chinese Cabbage Resistant to Pieris rapae L.with Modified CpTI Gene (sck)

Yang Guangdong1, 2, Zhu Zhen3, Li Yan'e2, Zhu Zhujun1, Xiao Guifang3, and Wei Xiaoli3   

  1. (1Department of Horticulture, Zhej iang University, Hangzhou 310029, China; 2Cotton Research I nstitute, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, China; 3 Institute of Genetics, Chinese Academy of Sciences, Beijing 100101, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-06-25 Published:2002-06-25

摘要: 以大白菜3 d 苗龄带柄子叶为外植体, 经根癌农杆菌(Agrobacterium tumef aciens) 介导, 将修饰的豇豆胰蛋白酶抑制剂基因(sck) 导入大白菜自交系‘GP-11’和杂交种‘中白4号’, 并获得了卡那霉素抗性植株。PCR 检测和Southern blot 杂交证实, sck 基因已整合进大白菜基因组中; 豇豆胰蛋白酶抑制剂活性检测表明, 大部分转基因植株都对牛胰蛋白酶有一定的抑制活性, 对照未转化植株抑制活性很低。室内离体叶片饲虫和田间自然抗虫性鉴定进一步证明, 转基因植株对菜青虫(Pieris rapae L. ) 具有一定抗性。

关键词: 大白菜, 修饰的豇豆胰蛋白酶抑制剂基因, 根癌农杆菌, 豇豆胰蛋白酶抑制剂活性, 抗虫

Abstract: Modified CpTI (Cowpea Trypsin Inhibitor) gene (sck) was successfully transferred into Chinese cabbage (Brassica campestris L. ssp. pekinensis) varieties ‘GP-11’and ‘Zhongbai 4’ mediated by Agrobacte rium tumefaciens. Kanamycin resistant plants were obtained from cotyledons with petiole. PCR and Southern blot assays confirmed that sck genewas integrated into Chinese cabbage genome DNA. The test about expression of CpTI inhibitory activity indicated that almost every transgenic plant had ability to inhibit bovine trypsin, and non transformed plants had lower activity. Insect􀀁tolerance of the transgenic plants to Pieris rapae L. were observed in
the laboratory and field which showed some transgenic plants had strong resistance to this pest.

Key words: Chinese cabbage, sck, Agrobacterium tumefaciens, CpTI relative capacity, Insect􀀁, tolerance

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