期刊
JOURNAL OF INTEGRATIVE AGRICULTURE
卷 11, 期 2, 页码 321-326出版社
ELSEVIER SCI LTD
DOI: 10.1016/S2095-3119(12)60016-1
关键词
P450; cross-resistance; pymetrozine; imidacloprid; thiamethoxam; acetamiprid; dinotefuran; neonicotinoids
资金
- National Basic Research and Development Program of China [2009CB119200]
- National Natural Science Foundation of China [31071683]
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.
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