在硫甲醇选择下,微生物群体和抗体在两个无氧的系统依赖分歧
Yuepeng Deng1, Depeng Wang2, Jie Li2
1Institute of Environmental Research at Greater Bay/ Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
Water research
|October 23, 2025
概括
废水中的硫甲醇 (SMX) 刺激无氧消化和硫酸盐减少系统中的微生物活动. 然而,它也增加了抗生素耐药性基因,影响了治疗效率和微生物社区结构.
科学领域:
- 环境微生物学环境微生物学
- 污水处理 污水处理 污水处理
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 废水中硫甲醇 (SMX) 的高度威胁到无氧生物处理系统.
- 对于SMX生物降解对无氧消化 (AD) 和硫酸盐降解 (SR) 系统的具体影响尚未完全理解.
研究的目的:
- 研究SMX暴露对AD和SR系统中的微生物群落和功能过程的影响.
- 了解SMX生物降解的机制及其对有机物去除和抗生素耐药性基因增殖的影响.
主要方法:
- 暴露AD和SR系统的SMX.
- 使用高通量测序分析微生物社区结构和功能.
- 有机物去除效率的量化. 有机物去除效率.
- 评估抗生素耐药性基因 (ARG) 丰富度和移动遗传元素的转移.
主要成果:
- 在SR系统中,SMX刺激了AD中的甲基生成和SR系统中的硫酸盐减少,由特定的微生物种群驱动.
- 有机物去除效率在AD增加,但在SMX压力下的SR系统下降.
- 富含AD的动因菌素被确定为SMX降解剂.
- 暴露于SMX显著促进了ARG的扩散,特别是在SR系统中,有证据表明通过移动遗传元素进行横向基因转移.
结论:
- 在厌氧系统上,SMX表现出双重效应,刺激一些过程,同时抑制其他过程.
- 微生物社区对SMX的反应是系统特定的,影响治疗效率并促进抗生素耐药性.
- 了解这些复杂的相互作用对于在药品存在的情况下优化废水处理策略至关重要.
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