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聚烯和硫聚烯在应力下对小麦的毒性影响的比较

Lingfeng Qin¹, Gonghao Liu¹, Jiaoyan Huang¹

¹College of Environment and Resources, Xiangtan University, Xiangtan, Hunan 411105, PR China; Hunan Provincial University Key Laboratory for Environmental and Ecological Health, Xiangtan University, Xiangtan, Hunan 411105, PR China.

Journal of hazardous materials

|June 9, 2024

概括

聚乙烯 (PS) 和硫聚乙烯 (SPS) 微塑料在 (Cd) 污染下不同影响小麦. 通过帮助营养吸收和代谢修复,PS减轻了Cd的毒性,而高度的SPS则加剧了Cd的影响.

科学领域:

环境科学环境科学
植物科学植物科学
毒理学毒理学毒理学

背景情况:

聚乙烯 (PS) 和硫聚乙烯 (SPS) 微塑料在环境中持续存在,引发了人们对其与污染物的联合影响的担忧.
微塑料的不同物理化学特性可能会导致与 (Cd) 等污染物相互作用时产生不同的环境影响.

研究的目的:

研究PS和SPS微塑料在存在 (Cd) 的情况下对小麦生长的联合毒性影响.
了解微塑料的特性如何影响它们与Cd的相互作用以及随后对作物生理和新陈代谢的影响.

主要方法:

在不同度的Cd,PS和SPS下评估了小麦生长和生理参数.
使用KEGG途径分析分析了关键的代谢途径 (TCA循环,谷氨,金胺代谢) 和必需金属元素的吸收.
评估了微塑料的稳定性 (Zeta潜力,水力动态粒子大小) 和Cd的结合能力.

主要成果:

通过破坏根部发育,显著抑制了小麦的生长.
低度的PS和SPS都显示出hormesis,促进小麦的生长.
通过减少氧化应激,增强必需金属的吸收,并促进代谢修复 (TCA循环,谷氨代谢),PS减轻了Cd的毒性.
高度的SPS加剧了Cd毒性,增加了氧化应激,阻碍了金属吸收,并破坏了TCA循环和pyrimidine代谢.
微塑料稳定性和Cd结合能力的差异解释了PS和SPS的不同影响.

结论:

聚乙烯 (PS) 和硫聚乙烯 (SPS) 微塑料在 (Cd) 污染下对小麦产生不同的影响.
聚氨酸显示出对Cd毒性的保护作用,而聚氨酸在较高度下可以放大负面影响.
微塑料的特性显著影响其环境风险和污染农业系统中对食品安全的影响.

关键词:

(Cd) 是一种结合的毒性结合的毒性代谢学代谢学代谢学聚乙烯 (PS) 是一种聚乙烯.硫聚烯 (SPS) 是一种硫聚烯.

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