Characterisation of Neonicotinoid and Pymetrozine Resistance in Strains of Bemisia tabaci (Hemiptera: Aleyrodidae) from China
Characterisation of Neonicotinoid and Pymetrozine Resistance in Strains of Bemisia tabaci (Hemiptera: Aleyrodidae) from China
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DOI：
10.1016/s2095-3119(12)60016-1
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发表时间：
2012-01-01
影响因子：
4.8
通讯作者：
Denholm, Ian
中科院分区：
文献类型：
--
作者：
Rao Qiong;Xu Yong-hua;Denholm, Ian
对从中国收集的烟粉虱 Q 生物型的 4 株和 B 生物型的一株进行了对四种新烟碱类杀虫剂和吡蚜酮的抗性鉴定。 Q生物型菌株对吡虫啉、噻虫嗪和啶虫脒表现出中度至强的耐药性，但对呋虫隆很少或没有交叉耐药性。对新烟碱类杀虫剂的耐药性始终与对吡蚜酮的耐药性相关，尽管后者具有独特的（尽管尚未解决）作用模式。事实证明，单一 B 生物型菌株对所有研究的杀虫剂非常敏感。 Q生物型菌株的耐药性与细胞色素P450单加氧酶基因CYP6CM1的过度表达有关，其底物特异性可能解释了观察到的交叉耐药性特征。
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.