厌氧氨氧化菌群体感应机制

摘要

Anaerobic ammonium oxidation (Anammox), a process which the anaerobic ammonium oxidation bacteria (AnAOB) with nitrite as the electron acceptor converts ammonium into nitrogen gas. Because of low consumption and high efficiency,anammox is considered as one of the best process in the wastewater treatment field. Quorum sensing (QS) is a common microorganism communication system, and it can control gene expression in accordance with the cell density. AnAOB expresses some behaviors such as self-congregating and active striking during growing up. It confirms that QS plays an important role in the metabolism of AnAOB. In this study,the mechanism of quorum sensing in AnAOB in recent years was summarized. Consequently, a theoretical basis for the application of anammox process in biological wastewater treatment was provided.%厌氧氨氧化反应是指厌氧氨氧化菌以亚硝酸盐为电子受体将氨氮转化为氮气的过程.厌氧氨氧化因其低耗高效的脱氮方式成为污水处理领域最具前景的污水脱氮工艺.群体感应是一种微生物中普遍存在的通讯机制,能根据环境中的细胞密度控制一些基因的表达.厌氧氨氧化菌在生长过程中具有自我聚集和活性突越等现象,这说明群体感应系统在厌氧氨氧化菌代谢过程中起到非常关键的作用.对近年来有关厌氧氨氧化菌群体感应机制的研究进展进行了综述,为今后将厌氧氨氧化工艺应用于实际污水处理提供理论基础.