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聚乙烯微塑料对抗生素耐药性基因的影响:基于不同土壤类型和植物类型的比较
Yi Li1, Xinwei Shi1, Meng Zeng2
1Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin, China; College of Environment and Resources, Guangxi Normal University, Guilin, China; Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Guangxi Normal University, Guilin, China.
Journal of hazardous materials
|May 14, 2024
概括
微塑料 (MP) 作为土壤中抗生素耐药性基因 (ARG) 的载体,影响微生物网络,并可能丰富植物中的ARG. 这凸显了这些持续性污染物带来的环境风险.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 土壤科学 土壤科学
背景情况:
- 微塑料 (MP) 和抗生素耐药性基因 (ARG) 是普遍存在的土壤污染物.
- 议员可以促进微生物殖民和ARG的传播,对生态系统和人类健康构成风险.
研究的目的:
- 在MP应用后,研究微生物网络和ARG分布在不同类型的土壤中.
- 评估环境因素,微生物宿主和ARG受到MP的影响.
主要方法:
- 在MP应用后,分析重金属污染的农业土壤和不同植物类型 (Bidens pilosa L.,Ipomoea aquatica F.,Brassica chinensis L.) 的微生物群落和ARG概况.
- 路径分析以确定MP特征 (颗粒大小,剂量) 对土壤特性,微生物和ARG的影响.
主要成果:
- 根球土壤中的微生物群落与高度模块化 (>0.4) 有着密切的关系.
- 核心种类 (Actinobacteriota,Proteobacteria,Myxococcota) 对环境压力耐受性至关重要.
- 麻菌治疗改变了携带ARG的微生物的丰富性,特定的治疗增加了几种细菌系的MuxB丰富性.
- MP粒子大小和剂量通过pH间接影响土壤酶活动,影响微生物和ARG.
结论:
- MPs可以作为ARG积累的表面,从而导致植物中的ARG丰富.
- 作为持久污染物,MPs显著影响各种土壤环境,并导致与ARG相关的环境风险.
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