Characterisation of Neonicotinoid and Pymetrozine Resistance in Strains of Bemisia tabaci(Hemiptera:Aleyrodidae)from China  

作　　者：RAO Qiong XU Yong-hua LUO Chen ZHANG Hong-yu Christopher M Jones Greg J Devine KevinGorman Ian Denholm 

机构地区：[1]College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R.China [2]Institute of Plant and Environmental Protection, Beijing Academy of Agriculture ＆ Forestry Sciences, Beijing 100097, P.R.China [3]Plant and Invertebrate Ecology Department, Rothamsted Research, Harpenden, Herts .4L5 2JQ, United Kingdom [4]Zhejiang Chemical Industry Research Institute, Zhejiang Branch of National Pesticide R＆D South Center, Hangzhou 310023, P.R. China

出　　处：《Journal of Integrative Agriculture》2012年第2期321-326,共6页农业科学学报（英文版）

基　　金：grants from the National Basic Research and Development Program of China(2009CB119200);the National Natural Science Foundation of China(31071683)

摘　　要：Four strains of the Q biotype and one of the B biotype of the whitefly Bemisia tabaci collected from China were characterised for resistance to four neonicotinoid insecticides and pymetrozine.Q biotype strains showed moderate to strong resistance to imidacloprid,thiamethoxam and acetamiprid,but little or no cross-resistance to dinotefuron.Resistance to neonicotinoids was consistently associated with resistance to pymetrozine,despite the latter having a distinct（though unresolved）mode of action.The single B biotype strain proved largely susceptible to all the insecticides investigated.Resistance in the Q biotype strains was associated with over-expression of a cytochrome P450 monooxygenase gene,CYP6CM1,whose substrate specificity presumably accounts for the observed cross-resistance profiles.Four strains of the Q biotype and one of the B biotype of the whitefly Bemisia tabaci collected from China were characterised for resistance to four neonicotinoid insecticides and pymetrozine.Q biotype strains showed moderate to strong resistance to imidacloprid,thiamethoxam and acetamiprid,but little or no cross-resistance to dinotefuron.Resistance to neonicotinoids was consistently associated with resistance to pymetrozine,despite the latter having a distinct（though unresolved）mode of action.The single B biotype strain proved largely susceptible to all the insecticides investigated.Resistance in the Q biotype strains was associated with over-expression of a cytochrome P450 monooxygenase gene,CYP6CM1,whose substrate specificity presumably accounts for the observed cross-resistance profiles.

关 键 词：P450 CROSS-RESISTANCE PYMETROZINE imidacloprid THIAMETHOXAM ACETAMIPRID DINOTEFURAN NEONICOTINOIDS 

分 类 号：S[农业科学]