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Ecological roles and release patterns of acylated homoserine lactones in Pseudomonas sp. HF-1 and their implications in bacterial bioaugmentation.
MedLine Citation:
PMID:  23026323     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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°C, pH 5-6, 3% inoculum, 1.5gL(-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 1.2-1.8gL(-1) of nicotine and 1% NaCl, the threshold for quorum sensing of biofilm formation was reached and the bioaugmentation system showed an efficient performance.
Authors:
Mei-Zhen Wang; Xin Zheng; Hong-Zhen He; Dong-Sheng Shen; Hua-Jun Feng
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-2
Journal Detail:
Title:  Bioresource technology     Volume:  125C     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-10-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  119-126     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, China.
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