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在anammox联盟中通过定数感应介导的微生态平衡

Jia-Hui Yang¹, Dong-Qi Huang², Ge-Ge Wu¹

¹School of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China.

Journal of hazardous materials

|April 18, 2025

概括

外源信号分子,如N-hexanoyl-homoserine乳 (C6-HSL) 和扩散信号因子 (DSF),可以稳定在anammox系统中的去除. 这些分子增强了anammox活动,微生物群体的稳定性和基因表达,显示了废水处理的潜力.

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.
废水处理废水处理

背景情况:

定数感应 (QS) 调节细菌通信,并影响无氧氨氧化 (anammox) 过程.
保持anammox联盟的稳定性对于在废水处理中有效去除至关重要.

研究的目的:

评估应用低度的外源信号分子在保持长期恒温的anammox联盟的应用.
研究N-hexanoyl-homoserine乳 (C6-HSL) 和扩散信号因子 (DSF) 对anammox工艺性能和微生物特征的影响.

主要方法:

进行了一项为期150天的连续流体实验.
测量了去除效率,anammox活性和细胞外聚合物质 (EPS) 生产.
进行了微生物社区结构,功能基因丰度 (hzsA,hdh,nirS) 和元基因组分析.

主要成果:

C6-HSL和DSF的除效率保持稳定 (约为90%).
这两种信号分子都促进了anammox活动和EPS生产.
微生物社区分析显示,关键的阿纳莫克斯细菌和相关的功能基因的丰富性增加.
甲基因组分析显示了参与代谢,氨基酸代谢和QS的基因的上调.

结论:

外源信号分子,特别是DSF,可以有效地稳定anammox联盟并增强去除.
通过QS介导的细胞间通信改善了anammox系统中的微生态稳态.
信号分子显示了在使用anammox工艺的真实废水处理中应用的潜力.

关键词:

亚纳姆莫克斯 (Anammox) 是一个扩散信号因子是一种可扩散的信号因子.代谢过程中的代谢.微生物的相互作用.在N-hexanoyl-homoserine乳中使用.检验人数的检测可以通过定数检测.

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