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单重低密度聚乙烯微塑料应激和干旱的同时暴露对生菜 (Lactuca sativa) 的生理学,生长和根部发育的影响

Angelica Barone¹, Giorgio Impollonia¹, Michele Croci¹

¹Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, Piacenza, 29122, Italy.

The Science of the total environment

|September 18, 2025

概括

农业土壤中的微塑料 (MPs) 对生菜生长和生理学产生负面影响. 低密度聚乙烯 (LDPE) MPs加剧了干旱对植物健康和生物质的压力影响.

科学领域:

环境科学环境科学
农业学是一种农业学.
植物生理学植物生理学

背景情况:

微塑料 (MP) 是普遍存在的环境污染物.
农业土壤容易受到MP污染.
干旱压力是影响作物产量的主要非生物因素.

研究的目的:

研究低密度聚乙烯 (LDPE) 微塑料对生菜 (Lactuca sativa) 生理学和生长的影响.
评估LDPE MPs和干旱压力对生菜的综合影响.
了解MP-土壤-植物在水限条件下的相互作用.

主要方法:

使用生菜 (Lactuca sativa) 的实验.
在0.75%和1.5% (重量/重量) 的污染水平下使用LDPE MP.
模拟干旱压力 (20%的植物可用水 - PAW).
测量参数:叶子中的叶绿素含量 (LCC),光系统II效率 (Fv/Fm,PIabs),光谱反射率,生长和根系参数.

主要成果:

只有LDPE的MP影响了LCC,PIabs和大多数生长参数.
干旱压力加剧了MP的影响.
1.5%的LDPE议员和干旱压力的相互作用影响了LCC和Fv/Fm.
地上生物质水分和叶子质量面积受到联合应力的影响.
根生长和组织密度受到LDPEMP和干旱压力相互作用的显著影响.

结论:

即使在最佳的水条件下,LDPE MPs也会干扰生菜生理和生长.
LDPE议员的存在加剧了干旱压力对生菜的负面影响.
研究结果强调了MP,土壤和植物之间的复杂相互作用,这对农业的可持续性有影响.

关键词:

传统的塑料塑料.干旱干旱干旱干旱菜菜是一种蔬菜.微塑料是一种微塑料.植物生长植物生长植物生理学植物生理学

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