自然衰老加剧了Brassica chinensis中的微塑料植物毒性
Aurang Zeb1, Nouman Ali1,2, Weitao Liu1
1MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
Journal of agricultural and food chemistry
|September 20, 2025
概括
在土壤中老化的微塑料 (MP) 显著增加了它们对Brassica chinensis等植物的毒性,并损害了土壤功能. 老年议员对农业生态系统构成更大的生态风险.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 生态毒理学 生态毒理学
背景情况:
- 微塑料 (MP) 是农业土壤中新兴的环境污染物.
- 微塑料老化对其生态影响的影响尚未得到充分理解.
研究的目的:
- 研究原始和老化的聚乙烯 (PE) 和聚乙烯 (PS) 微塑料对Brassica chinensis和土壤功能的影响.
- 评估微塑料老化如何影响植物毒性和土壤健康.
主要方法:
- 一个45天的实验使用Brassica chinensis.
- 通过光氧化和化对PE和PS微塑料进行人工老化.
- 微塑料在0.1%和1% (w/w) 的应用.
- 分析植物生理参数,氧化应激标志物,代谢学和土壤酶活动.
主要成果:
- 陈旧的微塑料比原始的微塑料具有更大的植物毒性,减少了植物的高度和生物量.
- 观察到氧化应激标志物的显著增加 (马隆迪阿尔代海德,超氧化脱氧化酶,过氧化酶,谷氨过氧化酶).
- 土壤微生物的功能,包括酸酶和氨酶的活动,和总含量被抑制.
- 老化PE微塑料也影响了植物的吸收.
结论:
- 微塑料的老化放大了对植物健康和土壤功能的负面影响.
- 陈旧的微塑料在农业系统中构成更高的生态风险.
- 需要进一步的研究,以了解老化微塑料在农业生态系统中的长期影响.
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