陈旧的聚乙烯微塑料调节除草剂和抗生素的生物可用性和植物反应:用草甘和四环素进行的案例研究
Natalia Lisiecka1, Anna Wyrwicka-Drewniak2, Przemysław Bernat3
1Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 7 4, 60-965 Poznan, Poland; Department of Plant Physiology and Biochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Banacha 12/16, Lodz 90-237, Poland; Institute for Environmental Studies, Faculty of Science, Charles University, Benátská 2, Prague 128 01, Czech Republic.
Ecotoxicology and environmental safety
|February 28, 2026
概括
土壤中的老化微塑料 (MP) 影响植物对杀虫剂和抗生素的吸收和反应. 国会议员可以降低某些化学品的毒性,但也会引起植物压力,影响作物健康.
科学领域:
- 环境科学 环境科学
- 农业化学 农业化学
- 植物生物学 植物生物学
背景情况:
- 在农业土壤中越来越多地发现微塑料 (MP),对作物健康和农业化学行为构成潜在风险.
- 众议员,除草剂和抗生素等异生菌与植物之间的相互作用尚未完全理解.
- 了解这些相互作用对于评估农用化学品在MP污染的生态系统中的环境影响至关重要.
研究的目的:
- 研究老化聚乙烯微塑料 (MPPE) 对四环素和基于草甘的除草剂的生物可用性和植物毒性的影响.
- 评估 *Brassica napus L.* 暴露于MP PE,异生菌及其组合的生理和生化应激反应.
- 为了确定MP PE对测试农业化学品不同化学成分的吸附能力.
主要方法:
- 使用*Brassica napus L.*作为模型植物进行受控的水培实验.
- 暴露于老化聚乙烯微塑料 (MP PE),四环素和基于草甘的除草剂 (具有表面活性物质阴离子的离子液体).
- 分析植物生理参数 (叶绿素,胡卜素),抗氧化酶活性 (CAT,APx,POx),林含量和谷氨S转移酶 (GST) 活性. 在水培溶液中测量异生菌度.
主要成果:
- MP PE附着在植物根部,导致叶绿素和胡卜素的显著减少,并改变抗氧化酶活动 (例如,减少CAT和APx,增加POx).
- MP PE表现出化合物特异性吸附,将溶解的四环素和表面活性剂阴离子度降低约20%,同时对草甘离子的影响最小.
- 同时暴露于MP PE与异生菌加剧了不良植物反应,尽管当它们被吸收到MP PE时,观察到单个异生菌毒性的部分缓解,表明依赖生物可用性的影响.
结论:
- 陈旧的微塑料作为环境压力和调节剂,影响植物生理学和农业化学品的生物可用性.
- 异生菌对MP PE的吸附可以改变它们的毒性,但这种效应是化合物特异性的,并不能消除植物应激.
- 这些发现凸显了将微塑料污染纳入农业化学品环境风险评估中的必要性,以准确预测农业系统中的污染物行为和作物健康.
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