摘要
Cyantraniliprole is a novel anthranilic diamide insecticide with significant efficacy against Bemisia tabaci,an important pest insect worldwide.In this study,we conducted reversion and selection work and genetic analysis,and determined cross-resistance spectrum and synergism of cyantraniliprole resistance based on the reported population,SX population,of B.tabaci collected from Shanxi Province,China.Compared with a susceptible strain(MED-S),SX population,the field-evolved cyantraniliprole-resistant population exhibited 26.4-fold higher resistance to cyantraniliprole.In SX,a sharp decline of cyantraniliprole resistance was shown in the absence of selection.Another tested strain,SX-R,was established from SX population after successive selection with cyantraniliprole and recently developed 138.4-fold high resistance to cyantraniliprole.SX-R had no cross-resistance to abamectin,imidacloprid,thiamethoxam,sulfoxaflor,or bifenthrin.Genetic analysis illustrated that cyantraniliprole resistance in SX-R was autosomally inherited and incompletely dominant.Additionally,piperonyl butoxide(PBO)significantly inhibited cyantraniliprole resistance in the SX-R strain.In conclusion,the selection of SX with cyantraniliprole led to high resistance to cyantraniliprole which is incompletely dominant and no cross-resistance to several common types of insecticides.Enhanced oxidative metabolism is possibly involved in the resistance of SX-R,yet target-site resistance could not be excluded.
Cyantraniliprole is a novel anthranilic diamide insecticide with significant efficacy against Bemisia tabaci, an important pest insect worldwide. In this study, we conducted reversion and selection work and genetic analysis, and determined cross-resistance spectrum and synergism of cyantraniliprole resistance based on the reported population, SX population, of B. tabaci collected from Shanxi Province, China. Compared with a susceptible strain(MED-S), SX population, the field-evolved cyantraniliprole-resistant population exhibited 26.4-fold higher resistance to cyantraniliprole. In SX, a sharp decline of cyantraniliprole resistance was shown in the absence of selection. Another tested strain, SX-R, was established from SX population after successive selection with cyantraniliprole and recently developed 138.4-fold high resistance to cyantraniliprole. SX-R had no cross-resistance to abamectin, imidacloprid, thiamethoxam, sulfoxaflor, or bifenthrin. Genetic analysis illustrated that cyantraniliprole resistance in SX-R was autosomally inherited and incompletely dominant. Additionally, piperonyl butoxide(PBO) significantly inhibited cyantraniliprole resistance in the SX-R strain. In conclusion, the selection of SX with cyantraniliprole led to high resistance to cyantraniliprole which is incompletely dominant and no cross-resistance to several common types of insecticides. Enhanced oxidative metabolism is possibly involved in the resistance of SX-R, yet target-site resistance could not be excluded.
基金
partly supported by research grants from the Scientific and Technological Innovation Capacity Construction Special Funds of the Beijing Academy of Agriculture and Forestry Sciences, China (KJCX20180705)
the National Natural Science Foundation of China (31601635)
the State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, China (SKL2018007)
the Program on Application Basic Research Project of the Xinjiang Production and Construction Corps, China (2016AG004)
