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Mutation in acetylcholinesterase1 associated with triazophos resistance in rice stem borer, Chilo suppressalis (Lepidoptera: Pyralidae)

文献类型： 外文期刊

作者： Jiang, Xiaojing 1 ; Qu, Mingjing 2 ; Denholm, Ian 3 ; Fang, Jichao 4 ; Jiang, Weihua 1 ; Han, Zhaojun 1 ;

作者机构： 1.Nanjing Agr Univ, Minist Agr, Key Lab Monitoring & Management Plant Dis & Insec, Nanjing 210095, Peoples R China

2.Shandong Peanut Res Inst, Qingdao 266100, Peoples R China

3.Rothamsted Res, Plant & Invertebrate Ecol Div, Harpenden AL5 2JQ, Herts, England

4.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China

关键词： Chilo suppressalis;Acetylcholinesterase;Gene mutation;Insecticide resistance;Triazophos

期刊名称：BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS （ 影响因子：3.575； 五年影响因子：3.381 ）

ISSN： 0006-291X

年卷期： 2009 年 378 卷 2 期

页码：

收录情况： SCI

摘要： Two full-length genes encoding different acetylcholinesterases (AChEs), designated as Ch-ace1 and Ch-ace2 were cloned from strains of the rice stern borer (Chilo suppressalis) susceptible and resistant to the organophosphate insecticide triazophos. Sequence analysis found an amino acid Mutation A314S in Ch-ace1 (corresponding to A201 in Torpedo californica AChE) that was consistently associated with the occurrence of resistance. This mutation removed an MspA1 I restriction site from the wild type allele. An assay based on restriction fragment length polymorphism (RFLP) analysis was developed to diagnose A314S genotypes in held populations. Results showed a strong correlation between frequencies of the Mutation and phenotypic levels of resistance to triazophos. The assay offers a prospect for rapid monitoring of resistance and assisting with the appropriate choice of insecticide for combating damage caused by C. suppressalis. 2008 Elsevier Inc. All rights reserved.

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