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在COVID-19爆发后,在水生生态系统中的微生物N循环过程中,消毒剂诱导的氨氧化中断

Lutong Yang¹, Ping Han², Qiaojuan Wang¹

¹Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Science, Beijing, 100049, China.

|May 15, 2024

概括

防治COVID-19的措施,特别是酸盐过酸盐消毒剂,通过破坏氨氧化细菌,破坏了河流循环. 该研究揭示了消毒剂对水生生态系统的负面影响.

科学领域:

环境微生物学环境微生物学
水生生态系统水生生态系统
生物地质化学循环的过程

背景情况:

人类活动显著改变水生环境中的元素循环.
(N) 循环对于营养的循环和生态系统的功能至关重要.
缓解COVID-19流行病的措施可能影响了河流N循环.

研究的目的:

调查COVID-19预防措施对河流生态系统中循环的影响.
确定低 (NaOCl) 消毒剂在改变N循环过程中的作用.
阐明NaOCl对氨氧化细菌的影响背后的微生物机制.

主要方法:

重新分析来自长江的元基因组数据,以确定N循环基因和微生物群落.
纯种尼特罗索莫纳斯欧罗巴的培养物暴露于NaOCl,以评估微生物应激反应.
功能标记技术,以确定NaOCl对氨一氧化酶蛋白和DNA的直接影响.

主要成果:

在大流行期间,细菌氨基单氧化酶基因和Nitrosomonas丰度的显着减少被观察到,随后恢复.
接触NaOCl迅速抑制了N. europaea中的氨氧化,从而损害了细胞结构.
发现NaOCl直接破坏氨一氧化酶蛋白和DNA,表明氧化应激.

结论:

在COVID-19大流行期间,NaOCl消毒剂的排放可能减少了河流生态系统中的N循环过程.
消毒剂对水生生态系统的功能完整性产生不利影响.
了解NaOCl毒性的机制对于减轻其对环境的影响至关重要.

关键词:

氨基单氧化酶是一种氨基氧化酶.在 COVID-19 疫情中,化消毒剂是一种化消毒剂.气循环中的气循环.尼特罗索莫纳斯是什么意思

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