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Roles and regulation of quorum sensing in anaerobic granular sludge: Research status, challenges, and perspectives

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BIORESOURCE TECHNOLOGY
卷 387, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2023.129644

关键词

Anaerobic granular sludge; Quorum sensing; Signal molecules; Microbial community; Regulatory mechanisms; Bibliometrics

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The paper systematically summarizes and analyzes the quorum sensing (QS) system in anaerobic granular sludge (AnGS), including its influence on the metabolic activity, physicochemical properties, and microbial community of AnGS. The regulation mechanism of QS in AnGS is analyzed from two systems of single bacterium and mixed bacteria. This review provides a comprehensive understanding of QS functions in AnGS systems, and promotes the practical application of QS-based strategies in optimization of AnGS treatment process.
Anaerobic granular sludge (AnGS) has a complex and important internal microbial communication system due to its unique microbial layered structure. As a concentration-dependent communication system between bacterial cells through signal molecules, QS (quorum sensing) is widespread in AnGS and exhibits great potential to regulate microbial behaviors. Therefore, the universal functions of QS in AnGS have been systematically summarized in this paper, including the influence on the metabolic activity, physicochemical properties, and microbial community of AnGS. Subsequently, the common QS-based AnGS regulation approaches are reviewed and analyzed comprehensively. The regulation mechanism of QS in AnGS is analyzed from two systems of single bacterium and mixed bacteria. This review can provide a comprehensive understanding of QS functions in AnGS systems, and promote the practical application of QS-based strategies in optimization of AnGS treatment process.

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