农药对蚯蚓的毒理学效应研究进展

    Research progress on toxicological effects of pesticides on earthworms

    • 摘要: 农药在使用过程中会通过液滴飞溅漂移、包装残留、加工泄露以及生物体排泄等多种方式不可避免地进入土壤环境,给土壤生物带来潜在的环境风险。蚯蚓是土壤中主要的生物类群,也是评估农药毒性风险最合适的土壤模式生物。本文基于当前国内外关于农药对蚯蚓毒理学效应影响的研究,概括了农药进入土壤中的途径及其在土壤中的残留现状、农药在蚯蚓体内的富集与消除行为;归纳了农药暴露对蚯蚓产生的生长及生殖毒性、细胞毒性、神经毒性、遗传毒性和氧化应激等毒性影响,着重综述了转录组学、代谢组学及微生物组学等组学方法在揭示农药对蚯蚓毒性作用机制方面的最新研究应用进展。本文可为农药的土壤生态风险评估提供必要的数据支撑,并为农药土壤污染风险管控和修复提供科学依据。

       

      Abstract: Pesticides inevitably enter the soil environment through droplet splash drift, pesticide packaging residue, pesticide processing leakage, and organism excretion during the application and bring potential environmental risks to soil organisms. As the main biological group in the soil, earthworms are the model organism for assessing the risk of pesticide toxicity. Based on the current research on the toxicological effects of pesticides on earthworms, this review summarized the ways that pesticides were used to enter the soil, the residues of pesticides in the soil, and the enrichment and elimination behaviors of pesticides in earthworms. The toxic effects of pesticides on earthworms, including growth and reproductive toxicity, cytotoxicity, neurotoxicity, genotoxicity, and oxidative stress were generalized. The latest progresses in transcriptomics, metabonomics and microbiomics in revealing the mechanism of pesticide-induced earthworm toxicity were emphatically reviewed. This study will provide necessary data support for soil ecological risk assessment of pesticides, and meanwhile, provide a basis for risk management and remediation of pesticide pollution in soil.

       

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