数字农科院2.0

Joint exposure to sulfoxaflor and prochloraz alters enzymatic and genetic profiles in honey bees (Apis mellifera L.)

文献类型： 外文期刊

作者： Lv, Lu;Chen, Liping;Suo, Yanli;Wang, Dou;Mao, Liangang;Cang, Tao;Wang, Yanhua;Liu, Xinju

作者机构：

关键词： Ecotoxicology;Toxic mechanism;Weight-of-evidence;Risk assessment

期刊名称： PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY

ISSN： 0048-3575

年卷期： 2026 年 218 卷

页码：

收录情况： SCIE（2025版）

摘要： Sulfoximine insecticide sulfoxaflor (SUL) and imidazole fungicide prochloraz (PRO) are frequently applied together or in succession in crops pollinated by honey bees. However, the mechanisms underlying their joint toxic risk remain poorly characterized. To address this gap, our study investigated the biochemical and molecular responses of Apis mellifera following co-exposure to SUL and PRO. The results revealed that the pesticide mixture elicited pronounced synergistic acute toxicity in honey bees. This toxic effect was accompanied by marked disturbances in the activities of catalase (CAT), caspase-3 (CASP-3), alpha-amylase (alpha-AMS), and trypsin, as well as significant alterations in the expressions of crucial genes, including nAChR alpha 2, vtg, and CRBXase. These genes are associated with oxidative stress regulation, apoptotic signaling, neural and digestive functions, detoxification, and longevity pathways. Our findings provided compelling evidence that the interactive effects of SUL and PRO amplified physiological stress in honey bees, leading to heightened biochemical and transcriptional disruptions. The interaction-based hazard index (HIint) was employed to robustly characterize potential synergistic effects arising from pesticide mixtures, thereby enabling a more precise and realistic environmental risk assessment of combined exposure to SUL and PRO. This study offered important mechanistic insights into the risks posed by pesticide combinations and highlighted the urgent need to reassess current regulatory practices. By elucidating the sub-lethal and synergistic impacts of commonly co-applied pesticides, our research supported the formulation of more comprehensive policies aimed at protecting pollinator health and preserving ecological balance.

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