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暴露于芳香碳化合物会改变土壤微生物群落和氧化还原驱动的碳代谢

Tian Lan¹, Yongyao Zhang¹, Ruidong Xie¹

¹State Key Laboratory of Urban-rural Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.

Environmental research

|September 15, 2025

概括

,,乙和 (BTEX) 的污染会改变土壤微生物群落和新陈代谢. 度依赖的效应将碳流转向酒精或乳酸盐生产,影响生物修复战略.

科学领域:

环境微生物学环境微生物学
生物地质化学生物地质化学
土壤科学土壤科学

背景情况:

,,乙和 (BTEX) 是常见的芳香碳化合物污染物.
它们对土壤微生物结构,氧化还原动力学和新陈代谢的度依赖性影响尚未完全理解.
这种知识差距阻碍了准确的生态系统响应预测和有效的生物修复策略.

研究的目的:

研究不同度的BTEX如何影响土壤微生物群落结构和代谢功能.
阐明微生物对BTEX暴露反应的度特异性机制.
为优化BTEX污染土壤的生物修复提供见解.

主要方法:

集成的分阶段安普利康序列,元基因组分析和代谢物概况.
土壤微生物群落暴露于不同度的BTEX.
分析微生物的分类构成,基因丰富性和代谢物生产.

主要成果:

暴露于BTEX改变了微生物分类组合,丰富了特定的Clostridium和Sporolactobacillus物种.
在较高度下,BTEX抑制了早期的酸路径反应,但增强了下游的糖解和乳酸盐生产.
低度的BTEX促进了酒精合成,而高度则有利于乳酸生物合成,改变了氧化还原动力学和碳分配.

结论:

BTEX以度依赖的方式重塑土壤微生物的氧化还原动力学和碳分配.
了解这些微生物反应,可以提供对芳香碳化合物污染影响的机制性见解.
这些发现支持针对污染土壤的有针对性的生物修复策略的设计和优化.

关键词:

乙酸乙酸盐的使用方法酒精饮料酒精饮料酒精饮料酒精饮料在BTEX污染污染.黄糖酸盐是什么黄糖酸盐碳水化合物的新陈代谢.转基因组学是什么意思?

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