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和反共同污染对性沉积物中的微生物群体的选择性压力

Miaomiao Zhang¹, Yiqun Xiong², Huicai Sun¹

¹School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.

Journal of hazardous materials

|November 20, 2023

概括

性沉积物中的微生物群体由于 (As) 和 (Sb) 的共同污染,显示出显著的损伤和变化的组成. 生存策略涉及金属氧化,减少和抵抗,为生物修复提供了洞察力.

科学领域:

环境微生物学环境微生物学
地质化学地质化学
生物修复是一种生物修复.

背景情况:

(As) 和反 (Sb) 的共同污染是一个重要的环境问题,特别是在性环境中,微生物反应尚不清楚.
矿井排水引入高度的和进入水和沉积物系统,影响微生物生态系统.

研究的目的:

在沉积物中的 (As) 和 (Sb) 共同污染下研究微生物反应和生存策略.
确定关键的微生物参与者及其参与减轻性环境中As和Sb毒性的代谢途径.

主要方法:

在受污染的性沉积物中分析微生物丰富度和组成.
超基因组测序以阐明微生物生存策略和代谢途径.
识别了代表性的微生物属,并发现了抗生素耐药性基因 (ARG) 与金属耐药性基因 (MRG) 的同时存在.

主要成果:

As和Sb的共同污染显著减少了微生物的丰富性,并大大改变了性沉积物中的微生物群落组成.
微生物生存策略包括金属氧化与脱,金属减少和金属抵抗相结合.
像Halomonas这样的特定属在污染较高的区域被丰富,而Thiobacillus,Hydrogenophaga和Flavihumibacter在污染较低的区域被发现. 发现ARG与MRG同时发生.

结论:

性沉积物中的微生物群落采用各种策略来生存As和Sb共同污染.
这些发现为As和Sb共同污染的性环境的生物修复提供了理论基础.
ARG和MRG的同时出现凸显了与共污染和微生物适应相关的潜在风险.

关键词:

性沉积物的性沉积物作为和Sb的共同污染.代谢潜力的代谢潜力微生物的适应.生存策略的生存策略.

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