ACTA AGRICULTURAE BOREALI-SINICA ›› 2007, Vol. 22 ›› Issue (1): 152-155. doi: 10.3321/j.issn:1000-7091.2007.01.036

Special Issue: Biotechnology

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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

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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Cite this article

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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