Long- and short-chain AHLs affect AOA and AOB microbial community composition and ammonia oxidation rate in activated sludge
Long- and short-chain AHLs affect AOA and AOB microbial community composition and ammonia oxidation rate in activated sludge
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长链和短链AHL影响活性污泥中AOA和AOB微生物群落组成和氨氧化速率
DOI：
10.1016/j.jes.2018.06.022
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发表时间：
2019-04-01
影响因子：
6.9
通讯作者：
Zhuang, Guoqiang
中科院分区：
文献类型：
--
作者：
Gao, Jie;Duan, Yu;Zhuang, Guoqiang
研究了污水处理过程中氨氧化古菌（AOA）和氨氧化细菌（AOB）群落组成的群体感应（QS）调控及其功能。具体而言，我们探讨了N-酰基-L-高丝氨酸内酯（AHLs）在活性污泥中微生物群落动态中的作用。平均而言，比氨氧化速率增加1.6至2.8毫克NH 4 +-N/克MLSS/小时后，与长链AHLs处理16天，并添加AHLs污泥AOA/AOB amoA基因的数量增加。在AOA社区的控制和AHL处理的文化，但没有AOB社区观察到显着差异。此外，Crenarchaeota的优势功能AOA菌株改变了他们的生态位，响应阿勒除了。这些结果表明AHLs在调节AOA/AOB微生物群落参数中起着重要作用，并展示了QS在废水处理中氮化合物代谢调控中的应用潜力。(c)2018中国科学院生态环境科学研究中心由爱思唯尔公司出版
Quorum sensing (QS) regulation of the composition of ammonia-oxidising archaea (AOA) and ammonia-oxidising bacteria (AOB) communities and functions in wastewater treatment was investigated. Specifically, we explored the role of N-acyl-L-homoserine lactones (AHLs) in microbial community dynamics in activated sludge. On average, the specific ammonia-oxidising-rate increased from 1.6 to 2.8 mg NH4+-N/g MLSS/hr after treatment with long-chain AHLs for 16 days, and the addition of AHLs to sludge resulted in an increased number of AOA/AOB amoA genes. Significant differences were observed in the AOA communities of control and AHL-treated cultures, but not the AOB community. Furthermore, the dominant functional AOA strains of the Crenarchaeota altered their ecological niche in response to AHL addition. These results provide evidence that AHLs play an important role in mediating AOA/AOB microbial community parameters and demonstrate the potential for application of QS to the regulation of nitrogen compound metabolism in wastewater treatment. (c) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.