数字农科院2.0

Gene cloning and expression of aminopeptidase N and cadherin from midgut of the rice stem borer, Chilo suppressalis

文献类型： 外文期刊

作者： Chen, Hao;Zhang, Yong-Jun;Wu, Kong-Ming;Liang, Ge-Mei;Guo, Yu-Yuan;Liu, Ze-Wen

作者机构：

关键词： aminopeptidase N;cadherin;Chilo suppressalis;heterologous expression;Tn cells

期刊名称： INSECT SCIENCE

ISSN： 1672-9609

年卷期： 2010 年 17 卷 5 期

页码：

收录情况： SCI

摘要： The rice stem borer, Chilo suppressalis Walker is one of the most important insect pests on rice in Asia, north Africa and southern Europe. Transgenic Bt rice has been developed in the laboratory with good resistance to this pest and other Lepidopteran insects, which will provide a possible alternative tool for this pest control. The full-length cDNAs encoding an aminopeptidase N (CsAPN) and a cadherin (CsCad) were cloned from C. suppressalis. CsAPN showed common features of, and high identities to, other insect APNs in its deduced amino acid sequence. Although a full-length cDNA encoding cadherin-like protein has been reported in GenBank, the newly isolated cadherin here (CsCad) showed some differences in its amino acid sequence, especially at the 7th cadherin repeat region (CR7), which indicated the newly isolated CsCad might be another allele. CsAPN and CsCad were successfully expressed in insect Tn cells, and the blot analysis showed these two proteins could bind Bt toxin Cry1Ab. The results will provide valuable information for the studies of toxin mode of action and the possible toxin resistance mechanisms in this pest.

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