Two cytochrome P450 genes are involved in imidacloprid resistance in field populations of the whitefly, Bemisia tabaci, in China

文献类型: 外文期刊

第一作者: Yang, Xin

作者: Yang, Xin;Zhou, Xiaomao;Yang, Xin;Xie, Wen;Wang, Shao-li;Wu, Qing-jun;Pan, Hui-peng;Li, Ru-mei;Yang, Ni-na;Liu, Bai-ming;Xu, Bao-yun;Zhang, You-jun

作者机构:

关键词: Bemisia tabaci;Insecticide resistance;Imidacloprid;qRT-PCR;Cytochrome P450

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 107 卷 3 期

页码:

收录情况: SCI

摘要: The sweet potato whitefly, Bemisia tabaci (Gennadius) (Hemiptera:Aleyrodidae), is an invasive and damaging pest of field crops worldwide. The neonicotinoid insecticide imidacloprid has been widely used to control this pest. We assessed the species composition (B vs. Q), imidacloprid resistance, and association between imidacloprid resistance and the expression of five P450 genes for 14-17 B. tabaci populations in 12 provinces in China. Fifteen of 17 populations contained only B. tabaci Q and two populations contained both B and Q. Seven of 17 populations exhibited moderate to high resistance to imidacloprid, and eight populations exhibited low resistance to imidacloprid, compared with the most susceptible field WHHB population. In a study of 14 of the populations, resistance level was correlated with the expression of the P450 genes CYP6CM1 and CYP4C64 but not with the expression of CYP6CX1, CYP6CX4, or CYP6DZ7. This study indicates that B. tabaci Q has a wider distribution in China than previously reported. Resistance to imidacloprid in field populations of B. tabaci is associated with the increased expression of two cytochrome P450 genes (CYP6CM1 and CYP4C64). Crown Copyright (C) 2013 Published by Elsevier Inc. All rights reserved.

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