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Co-exposure of Monensin Increased the Risks of Atrazine to Earthworms

文献类型： 外文期刊

作者： Jiang, Wenqi 1 ; Zhai, Wangjing 1 ; Liu, Xueke 1 ; Wang, Fang 3 ; Liu, Donghui 1 ; Yu, Xiangyang 2 ; Wang, Peng 1 ;

作者机构： 1.China Agr Univ, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Dept Appl Chem, Beijing 100193, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

3.Beijing Technol & Business Univ, Sch Ecol & Environm, Beijing 100048, Peoples R China

关键词： monensin; atrazine; combined pollution; degradation; toxicity; earthworms

期刊名称：ENVIRONMENTAL SCIENCE & TECHNOLOGY （ 影响因子：11.357； 五年影响因子：12.154 ）

ISSN： 0013-936X

年卷期： 2022 年 56 卷 12 期

页码：

收录情况： SCI

摘要： Antibiotics could enter farmlands through sewage irrigation or manure application, causing combined pollution with pesticides. Antibiotics may affect the environmental fate of pesticides and even increase their bioavailability. In this study, the influence of monensin on the degradation, toxicity, and availability of atrazine in soil-earthworm microcosms was investigated. Monensin inhibited the degradation of atrazine, changed the metabolite patterns in soil, and increased the bioavailability of atrazine in earthworms. Atrazine and monensin had a significant synergistic effect on earthworms in the acute toxic test. In long-term toxicity tests, co-exposure of atrazine and monensin also led to worse effects on earthworms including oxidative stress, energy metabolism disruption, and cocoon production compared to single exposure. The expression of tight junction proteins was down-regulated significantly by monensin, indicating that the intestinal barrier of earthworms was weakened, possibly causing the increased bioavailability of atrazine. The expressions of heat shock protein 70 (Hsp70) and reproductive and ontogenetic factors (ANN, TCTP) were all downregulated in binary exposure, indicating that the resilience and cocoon production of earthworms were further weakened under combined pollution. Monensin disturbed the energy metabolism and weakened the intestinal barrier of earthworms. These results showed that monensin increased the risks of atrazine in agricultural areas.

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