乙和硫醇的共同选择改变了土壤微生物的代谢和农业生态系统中的抗体
Wei Zhang1, Lide Gu1, Wanli Yan2
1Hebei Collaborative Innovation Center for Eco-Environment, Ecology Postdoctoral Research Station of Hebei Normal University, Hebei Normal University, Shijiazhuang, 050024, China.
Environmental research
|January 7, 2026
概括
土壤中除草剂和抗生素的共同污染改变了微生物群落,并促进了抗生素耐药性基因 (ARG). 这种多重污染物的暴露比单一污染物带来更大的生态和公共健康风险.
科学领域:
- 环境微生物学环境微生物学
- 土壤生态学 土壤生态学
- 农业化学毒理学 农业化学毒理学
背景情况:
- 农业土壤越来越多地暴露在除草剂和抗生素的混合物中.
- 由多种污染物共同污染的生态后果尚不清楚.
- 评估单一污染物的影响可能会低估现实世界的风险.
研究的目的:
- 调查乙 (ACE) 和硫 (SMX) 对土壤微生物群的共同选择性作用.
- 在同时暴露条件下分析对抗生素耐药性基因 (ARG) 的影响.
- 了解农业化学品在推动微生物社区转变和耐药性演变中的作用.
主要方法:
- 使用了土壤植物微观宇宙实验设置.
- 采用元基因组测序来分析微生物群落和ARG.
- 研究了乙 хло (ACE) 的剂量依赖反应.
主要成果:
- 硫甲醇 (SMX) 显著降低了微生物多样性和改变了社区结构,有利于Acidobacteriota而不是Pseudomonadota.
- 同时暴露减少了多样性,抑制了代谢,并协同增加了氧化排放潜力.
- 杂草杀虫剂和抗生素的同时暴露导致了临床相关的ARG的出现和传播,其中酸盐 (ACE) 加快了耐药性演变.
结论:
- 暴露于多重污染物,特别是除草剂和抗生素的组合,对生态和公共健康构成重大风险.
- 乙 (ACE) 作为"抗生素辅助剂",影响抗药性发展.
- 风险评估必须考虑共同污染场景,以准确评估农业生态系统影响.
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