Mo Wujia, Li Qiang, Lu Zhongxian, Ullah Farman, Guo Jiawen, Xu Hongxing, Lu Yanhui
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
State Key Laboratory of Rice Biology and Ministry of Agricultural and Rural Affairs, Key Laboratory of Molecular Biology of Crop Pathogens and Insect Pests, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China.
Plants (Basel). 2025 Feb 27;14(5):724. doi: 10.3390/plants14050724.
is one of the most important rice pests worldwide, and chlorantraniliprole, abamectin, and methoxyfenozide have been widely used to control this pest in China. However, the control efficiency in the field has dramatically decreased in recent years. Therefore, assessing the impacts of different factors on resistance is essential for maintaining control effectiveness and managing resistant populations. Herein, we investigated insecticide resistance and its potential influencing factors (biotic and abiotic factors) in field populations, using bioassays and biochemical and molecular diagnostic approaches. The results showed that the resistance levels of most field populations of have evolved to moderate-to-high levels to the tested insecticides. The toxicity correlation analysis indicated that there was a significant positive correlation between the resistance levels of abamectin and methoxyfenozide, whereas GST activity was positively correlated with abamectin and methoxyfenozide resistance in . EST and P450 activities showed significantly positive correlation with the resistance of chlorantraniliprole and methoxyfenozide, while the increase in temperature enhanced EST enzyme activity and was positively correlated with the evolution of resistance to methoxyfenozide. Overall, our study provides a systematic understanding of the dynamic resistance status and its influencing factors of to insecticides. These findings will help clarify the resistance levels and the influencing factors in the resistance development of , providing a theoretical basis for the resistance management of this insect species.
是全球最重要的水稻害虫之一,氯虫苯甲酰胺、阿维菌素和甲氧虫酰肼在中国已被广泛用于防治这种害虫。然而,近年来田间防治效果大幅下降。因此,评估不同因素对抗性的影响对于维持防治效果和管理抗性种群至关重要。在此,我们采用生物测定以及生化和分子诊断方法,研究了田间种群的杀虫剂抗性及其潜在影响因素(生物和非生物因素)。结果表明,大多数田间种群对所测试杀虫剂的抗性水平已演变为中到高水平。毒性相关性分析表明,阿维菌素和甲氧虫酰肼的抗性水平之间存在显著正相关,而谷胱甘肽 - S - 转移酶(GST)活性与阿维菌素和甲氧虫酰肼抗性呈正相关。酯酶(EST)和细胞色素P450活性与氯虫苯甲酰胺和甲氧虫酰肼的抗性呈显著正相关,而温度升高增强了EST酶活性,并且与对甲氧虫酰肼抗性的进化呈正相关。总体而言,我们的研究提供了对该害虫对杀虫剂的动态抗性状态及其影响因素的系统理解。这些发现将有助于阐明该害虫抗性发展中的抗性水平和影响因素,为该昆虫物种的抗性管理提供理论依据。