解码anammox颗粒:微生物相互作用促进颗粒的形成,并间接影响抗生素耐药性基因的传播
Yuliang Zhu1, Dong Li1, Huiping Zeng1
1Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Water research
|October 11, 2025
概括
无氧氨氧化 (anammox) 颗粒剂通过改变微生物群落和新陈代谢来增强生物质的保留. 然而,这一过程也增加了抗生素耐药性基因 (ARG) 通过水平基因转移传播的风险.
科学领域:
- 环境微生物学环境微生物学
- 生物技术是生物技术.
- 污水处理 污水处理 污水处理
背景情况:
- 无氧氨氧化 (anammox) 颗粒化对于废水处理中的生物质保留至关重要.
- 在anammox颗粒化过程中,微生物动态,代谢调节和抗生素耐药性基因 (ARG) 传播尚未完全理解.
研究的目的:
- 为了研究物理化学性质,微生物群落的转移,代谢调节,以及在anammox颗粒化过程中的ARG配置.
- 阐明治理anammox颗粒和ARG传播的生态机制.
主要方法:
- 建立一个anammox颗粒反应堆.
- 综合的物理化学表征和多组学分析 (元基因组学,元转录组学).
- 对污泥特性,微生物群落,基因表达和ARG配置文件的分析.
主要成果:
- 颗粒大小与污泥表面自由能量和细胞外聚合物物质 (EPS) 含量相关,特别是密集结合的EPS中的蛋白质,影响机械强度.
- 蛋白质细菌主导微生物转移和网络相互作用,对系统稳定至关重要.
- 选择性碳代谢调节支持氨基酸和辅因子生物合成,微生物种群表现出代谢互补性.
- 亚纳莫克斯颗粒化促进了ARG的水平基因转移,主要是通过移动遗传元素,目标替代和流出作为关键的抵抗机制.
结论:
- 亚纳莫克斯颗粒化涉及复杂的微生物相互作用和代谢规则.
- 颗粒化过程促进了抗生素耐药性基因 (ARG) 的传播,在工程系统中构成风险.
- 结果提供了对anammox颗粒生态和管理ARG传播的策略的见解.
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