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Overexpression of carboxylesterase-1 and mutation (F439H) of acetylcholinesterase-1 are associated with chlorpyrifos resistance in Laodelphax striatellus

文献类型： 外文期刊

作者： Zhang, Yueliang 1 ; Li, Shuo 1 ; Xu, Lu 2 ; Guo, Hui Fang 1 ; Zi, Jinyan 1 ; Wang, Lihua 1 ; He, Peng 3 ; Fang, Jichao 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Jiangsu, Peoples R China

2.Nanjing Agr Univ, Minist Agr, Key Lab Monitoring & Management Plant Dis & Insec, Nanjing, Jiangsu, Peoples R China

3.Guizhou Univ, Minist Educ, Key Lab Green Pesticide & Agr Bioengn, State Key Lab Breeding Base Green Pesticide & Agr, Guiyang 550003, Peoples R China

关键词： Laodelphax striatellus;Insecticide resistance;Carboxylesterase;Protein quantity;Acetylcholinesterase;Mutation frequency

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）

ISSN： 0048-3575

年卷期： 2013 年 106 卷 1-2 期

页码：

收录情况： SCI

摘要： Previous studies investigating a chlorpyrifos-resistant (YN-CPF) strain indicated chlorpyrifos resistance was a result of Laodelphax striatellus carboxylesterase-1 (Ls.CarE1)-mediated detoxification and acetylcholinesterase (AChE) insensitivity. In this study, we found via immunoblotting that the protein level of Ls.CarE1 was significantly overexpressed in the YN-CPF strain compared with that observed in the chlorpyrifos-susceptible (YN) strain. Moreover, the full-length gene encoding acetylcholinesterase-1, designated Ls.AChE1, was cloned from the YN-CPF and YN strains. A sequence analysis found an amino acid mutation (Phe439His) in Ls.AChE1 (corresponding to F331 in the standard matured AChE sequence of Torpedo califomica) and the mutation frequencies of Phe439His were 91%, 54% and 0% in the YN-CPF, the chlorpyrifos relaxed selection (YN-RSF) and the YN strains, respectively. The results offer new evidence that support the involvement of both AChE insensitivity and CarE metabolism in the resistance to chlorpyrifos in the YN-CPF strain. (C) 2013 Elsevier Inc. All rights reserved.

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[1]Cross-resistance and possible mechanisms of chlorpyrifos resistance in Laodelphax striatellus (Fallen). Wang, Lihua,Zhang, Yueliang,Liu, Yanhe,Fang, Jichao,Zhang, Yueliang,Han, Zhaojun,Liu, Yanhe. 2010

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