Potential roles of acyl homoserine lactones (AHLs) in nitrifying bacteria survival under certain adverse circumstances.

ABSTRACT: Potential roles of quorum sensing (QS) in nitrifying bacteria activity and ecology, particularly under adverse circumstances have been rarely reported. Herein, eight lab-scale nitrification sequencing batch reactors, with or without adding acyl homoserine lactones (AHLs) were operated under adverse circumstances respectively. The results indicated that the introduction of AHLs significantly enhanced the nitrogen removal efficiency in the presence of nitrification inhibitors (dicyandiamide, DCD), accelerated the low temperature (10 °C) group into stable stage, and improved the utilization efficiency of AHLs in these two groups. Community analysis and qPCR further confirmed that AHLs significantly increased the abundance of nitrifying bacteria in low temperature group and DCD group, especial

SUBMITTER: Zeng X 

PROVIDER: S-EPMC9902454 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature