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聚乙烯微塑料增强了diisobutyl甲酸盐在盐土微生物中的毒性

Xiaole Wang¹, Chengbo Lu¹, Yifei Lv¹

¹College of Resources and Environment, Shandong Agricultural University, Key Laboratory of Agricultural Environment in Universities of Shandong, 61 Daizong Road, Taian, 271018, China.

Environmental pollution (Barking, Essex : 1987)

|December 31, 2025

概括

土壤中的二氧化甲酸盐 (DiBP) 和微塑料会损害微生物群落,破坏和碳循环. 联合暴露会放大这些负面影响,影响农业土壤的健康.

科学领域:

环境科学环境科学
土壤微生物学土壤微生物学
生态毒理学生态毒理学

背景情况:

农业土壤面临着由二甲 (DiBP) 和微塑料 (MPs) 造成的越来越多的污染.
DiBP和聚乙烯微塑料 (PE-MPs) 对盐土微生物生态系统的综合影响在很大程度上是未知的.
了解这些相互作用对于评估农业土壤健康至关重要.

研究的目的:

调查DiBP和PE-MPs对盐土微生物群落的单独和联合影响.
分析对细菌和真菌社区结构以及-碳循环过程的影响.
确定潜在的生物标志物,以便早期检测土壤污染.

主要方法:

经过控制的微观实验,将盐土暴露在DiBP (1和10 mg/kg) 和PE-MPs (0.25%w/w) 中,持续60天.
使用分子技术分析细菌和真菌社区结构.
通过酶活性测定和基因丰度分析 (nirK, nirS, cbbLG, cbbLR) 评估和碳循环功能.

主要成果:

DiBP和PE-MP显著改变了微生物群落结构,联合暴露显示出更明显的效应.
芳香化合物和碳化合物降解被激活,而酸盐减少和碳固定被抑制.
脱酶活性成为DiBP和PE-MPs污染的敏感指标,毒性随着度和同时暴露而增加.

结论:

联合的DiBP和PE-MPs污染对盐水农业土壤微生物和生物地质化学循环构成重大威胁.
DiBP和PE-MPs改变了微生物的功能,影响了和碳循环.
脱酶活性可以作为土壤中联合DiBP和微塑料污染的早期预警指标.

关键词:

功能性基因是指功能性的基因.高通量测序的高通量测序综合生物标志物响应 (IBR)甲酸 (PAE) 是一种甲酸.土壤酶活性土壤酶活性

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