华北农学报 ›› 2007, Vol. 22 ›› Issue (1): 152-155. doi: 10.3321/j.issn:1000-7091.2007.01.036

所属专题: 生物技术

• 论文 • 上一篇    下一篇

烟夜蛾幼虫中肠类钙粘蛋白基因cDNA片段的克隆与序列分析

李卫华1, 苗雪霞2, 黄勇平2, 安世恒1, 郭线茹1   

  1. 1. 河南农业大学植物保护学院, 河南 郑州 450002;
    2. 中国科学院上海生命科学院植物生理生态研究所, 上海 200032
  • 收稿日期:2006-01-15 出版日期:2007-02-28
  • 通讯作者: 郭线茹(1963-),女,河南偃师人,教授,硕士生导师,博士,主要从事昆虫生态学的教学与科研工作。
  • 作者简介:李卫华(1978-),男,河南西华人,硕士研究生,主要从事昆虫分子生物学研究。
  • 基金资助:
    河南农业大学博士基金

cDNA Fragment Clone and Sequence Analysis of Cadherin-like Protein Gene in Tobacco Budworm (Helicoverpa assulta Guenée)

LI Wei-hua1, MIAO Xue-xia2, HUANG Yong-ping2, AN Shi-heng1, GUO Xian-ru1   

  1. 1. Plant Protection College of Henan Agricultural University, Zhengzhou 450002, China;
    2. Shanghai Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
  • Received:2006-01-15 Published:2007-02-28

摘要: 类钙粘蛋白位于昆虫中肠刷状缘膜囊泡上,该蛋白作为Bt毒素的受体可以与其结合导致昆虫死亡,因此,昆虫对Bt毒素的抗性与类钙粘蛋白有密切关系。本研究以烟夜蛾五龄幼虫中肠的总RNA为模板,根据已经克隆的其他昆虫的类钙粘蛋白基因序列设计引物,利用RT-PCR技术扩增出了烟夜蛾类钙粘蛋白基因的cDNA片段,将其连接到pMD18-T载体,转化大肠杆菌后筛选阳性克隆并进行序列测定,测序得到的1335 bp的片断编码444个氨基酸残基。序列分析表明,该氨基酸序列与棉铃虫和烟芽夜蛾类钙粘蛋白的一致性分别为95%和86%。研究结果对进一步研究昆虫对Bt毒素产生抗性的机制以及发展分子技术快速检测并监测田间昆虫抗性基因的产生奠定了基础。

关键词: 烟夜蛾, 类钙粘蛋白, 基因克隆, 序列分析

Abstract: Cadherin-like protein acts as a receptor of Bt toxin by binding with toxin in brush border membrane of insect. Insect resistance to Bt toxin is related with the variation of cadherin-like protein gene. cDNA fragment of cadherin-like protein gene in the fifth instar larva of oriental tobacco budworm was amplified using degeneracy primers and RT-PCR technique, and the target fragment was further sequenced after being cloned into pMD18-T vector plasmid. The sequence analysis showed that 1335 bp nucleotide fragment that encodes 444 amino acid residues was located in the encoding frame. Compared with cadherin-like protein of Helicoverpa armigera and Heliothis virescens, the identity of amino acid sequence were 95% and 86%, respectively.

Key words: Helicoverpa assulta Guené, e, Cadherin-like protein, Gene cloning, Sequence analysis

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引用本文

李卫华, 苗雪霞, 黄勇平, 安世恒, 郭线茹. 烟夜蛾幼虫中肠类钙粘蛋白基因cDNA片段的克隆与序列分析[J]. 华北农学报, 2007, 22(1): 152-155. doi: 10.3321/j.issn:1000-7091.2007.01.036.

LI Wei-hua, MIAO Xue-xia, HUANG Yong-ping, AN Shi-heng, GUO Xian-ru. cDNA Fragment Clone and Sequence Analysis of Cadherin-like Protein Gene in Tobacco Budworm (Helicoverpa assulta Guenée)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(1): 152-155. doi: 10.3321/j.issn:1000-7091.2007.01.036.

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