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园艺学报 ›› 2013, Vol. 40 ›› Issue (3): 498-504.

• 蔬菜 • 上一篇    下一篇

抗虫相关基因KTI 对青花菜的转化及其对小菜蛾抗性的分析

 江汉民, 宋文芹, 刘莉莉, 文正华, 姚星伟, 单晓政, 孙德岭   

  1. (1 天津科润蔬菜研究所,天津 300384;2 南开大学生命科学学院,天津 300071)
  • 出版日期:2013-03-25 发布日期:2013-03-25

Transformation of Broccoli with KTI Gene and the Bioassay for
Diamondback Moth Resistance

JIANG  Han-Min, SONG  Wen-Qin, LIU  Li-Li, WEN  Zheng-Hua, YAO  Xing-Wei, DAN  Xiao-Zheng, SUN  De-Ling   

  1. (1Tianjin Kernel Vegetable Research Institute,Tianjin 300384,China;2College of Life Sciences,Nankai University,
    Tianjin 300071,China)
  • Online:2013-03-25 Published:2013-03-25

摘要: 以青花菜(Brassica oleracea L. ssp. italica)下胚轴为外植体,通过农杆菌介导的遗传转化方
法将来源于杨树的Kunitz 型丝氨酸胰蛋白酶抑制剂(KTI)基因导入青花菜品系‘09LR-11’中,获得13
株卡那霉素抗性植株。以KTI 特异引物对转基因植株进行PCR 检测,其中8 株为KTI 阳性植株。Southern
blot 分析进一步表明,基因KTI 已成功整合到青花菜基因组中。RT-PCR 检测表明,KTI 在转基因青花菜
中已成功表达。通过室内叶片离体试验和田间观察,初步证明转KTI 青花菜对小菜蛾幼虫具有一定抗性

关键词: 青花菜, KTI 基因, 小菜蛾, 抗虫性, 转基因

Abstract: KTI gene was transformed into broccoli(Brassica oleracea L. ssp. italica)genome via
Agrobacterium mediated transformation method using broccoli lines‘09LR-11’as explants. Thirteen
kanamycin resistant broccoli plants were obtained. PCR analysis with primers specific to KTI gene
identified 8 KTI positive plants. Southern blotting analysis with KTI gene as probes showed that the KTI
gene was integrated into broccoli genome. RT-PCR analysis indicated that the KTI gene was expressed in
transgenic broccoli. Both laboratory and field tests proved that the transgenic broccoli plants were resistant
to diamondback moth(Plutella xylostella larvae).

Key words: broccoli, KTI gene, Plutella xylostella larvae, insect resistance, genetic transformation

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