Ecological roles and release patterns of acylated homoserine lactones in Pseudomonas sp HF-1 and their implications in bacterial bioaugmentation
Ecological roles and release patterns of acylated homoserine lactones in Pseudomonas sp HF-1 and their implications in bacterial bioaugmentation
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假单胞菌 HF-1 中酰化高丝氨酸内酯的生态作用和释放模式及其在细菌生物强化中的意义
DOI：
10.1016/j.biortech.2012.08.116
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发表时间：
2012-12-01
影响因子：
11.4
通讯作者：
Feng, Hua-jun
中科院分区：
文献类型：
--
作者：
Wang, Mei-zhen;Zheng, Xin;Feng, Hua-jun
To enable development of a better bacterial bioaugmentation system for tobacco wastewater treatment, the roles and release patterns of acylated homoserine lactones (AHLs) in Pseudomonas sp. HF-1 were evaluated. Swarming was found to be induced by N-hexanoyl-homoserine lactone (C-6-HSL) and N-3-oxo-hexanoyl-homoserine lactone (3-oxo-C-6-HSL); the formation of extracellular polymeric substances (EPS) was induced by 3-oxo-C-6-HSL, C-6-HSL and N-3-oxo-octanoyl-homoserine lactone (3-oxo-C-8-HSL); and biofilm formation was induced by C-6-HSL and 3-oxo-C-8-HSL. When the culture conditions were 25 degrees C. pH 5-6,3% inoculum, 1.5 g L-1 nicotine and 1% NaCl, the amount of AHLs released was sufficient for quorum sensing of swarming and EPS formation for strain HF-1, which was beneficial to the startup stage during bioaugmentation. When strain HF-1 was cultured at pH 8 in the presence of 1.2-1.8 g L-1 of nicotine and 1% NaCl, the threshold for quorum sensing of biofilm formation was reached and the bioaugmentation system showed an efficient performance. (C) 2012 Elsevier Ltd. All rights reserved.
