Roles of ATP-dependent N-acylhomoserine lactones (AHLs) and extracellular polymeric substances (EPSs) in aerobic granulation

被引：76

作者：

Jiang, Bo ^{[1
]}

Liu, Yu ^{[1
]}

机构：

[1] Nanyang Technol Univ, Div Environm & Water Resources Engn, Sch Civil & Environm Engn, Singapore 639798, Singapore

来源：

CHEMOSPHERE | 2012年 / 88卷 / 09期

关键词：

Aerobic granules; Uncoupler; ATP; Extracellular polymeric substances; Quorum sensing; N-acylhomoserine lactones; BIOFILM;

D O I：

10.1016/j.chemosphere.2012.04.059

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aerobic granules which form through a cell-to-cell self-immobilization process have been intensively studied and developed for wastewater biotreatment. However, the microbiological origin of this phenomenon is still largely unknown. This study investigated the possible role of metabolic energy in the development of aerobic granules. Results showed that aerobic granulation was positively related to ATP-dependent N-acylhomoserine lactones (AHLs) and extracellular polymeric substances (EPSs) production. Inhibited ATP synthesis by a chemical uncoupler, 3,3',4',5-tetrachlorosalicylanilide, led to significant reduction of AHLs and EPSs production, which in turn prevented aerobic granulation. This study for the first time demonstrated the involvement of ATP-dependent AHLs in aerobic granulation. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1058 / 1064

页数：7

共 33 条

[1]

[Anonymous], 1994, STANDARD METHODS EXA, V16th

[2] Effects of N-acyl homoserine lactone analogues on Porphyromonas gingivalis biofilm formation [J].