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N-Acylated homoserine lactone production and involvement in the biodegradation of aromatics by an environmental isolate of Pseudomonas aeruginosa

Paper ID Volume ID Publish Year Pages File Format Full-Text
34959 45061 2010 5 PDF Available
Title
N-Acylated homoserine lactone production and involvement in the biodegradation of aromatics by an environmental isolate of Pseudomonas aeruginosa
Abstract

N-Acyl homoserine lactone (AHL) is a widespread quorum sensing signal molecule in Gram-negative bacteria and has an important role in many biological processes. However, it is still poorly understood whether or not AHL is present in pollutant treatment processes and further, what its role is in biodegradation processes. In this work, an environmental isolate of Pseudomonas aeruginosa CGMCC 1.860 that is an aromatic degrader and AHL producer was selected. The AHL plate bioassay indicated that AHL was produced by this strain during biodegradation of aromatic compounds including phenol, benzoate, p-hydroxy-benzoate, salicylate, and naphthalene. The AHLs were identified as N-butyryl-l-homoserine lactone (BHL) and N-hexanoyl-l-homoserine lactone (HHL) by using thin layer chromatography (TLC) and high-performance liquid chromatography–atmospheric pressure chemical ionization mass spectrometry (HPLC–APCI-MS/MS) analyses. Furthermore, phenol biodegradation was improved by exogenously added AHL extracts or by endogenously over-produced AHLs, repressed by abolishment of AHLs production, and not affected by the addition of extracts without AHLs. The results indicated that AHL was involved in the process of biodegradation of pollutants.

Keywords
Quorum sensing; Homoserine lactone; Aromatics; Pseudomonas aeruginosa; Biodegradation
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N-Acylated homoserine lactone production and involvement in the biodegradation of aromatics by an environmental isolate of Pseudomonas aeruginosa
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 12, December 2010, Pages 1944–1948
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us