Document Detail

Quorum sensing, virulence and secondary metabolite production in plant soft-rotting bacteria.
MedLine Citation:
PMID:  17360277     Owner:  NLM     Status:  MEDLINE    
Quorum sensing describes the ability of bacteria to sense their population density and respond by modulating gene expression. In the plant soft-rotting bacteria, such as Erwinia, an arsenal of plant cell wall-degrading enzymes is produced in a cell density-dependent manner, which causes maceration of plant tissue. However, quorum sensing is central not only to controlling the production of such destructive enzymes, but also to the control of a number of other virulence determinants and secondary metabolites. Erwinia synthesizes both N-acylhomoserine lactone (AHL) and autoinducer-2 types of quorum sensing signal, which both play a role in regulating gene expression in the phytopathogen. We review the models for AHL-based regulation of carbapenem antibiotic production in Erwinia. We also discuss the importance of quorum sensing in the production and secretion of virulence determinants by Erwinia, and its interplay with other regulatory systems.
Anne M L Barnard; Steven D Bowden; Tom Burr; Sarah J Coulthurst; Rita E Monson; George P C Salmond
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Philosophical transactions of the Royal Society of London. Series B, Biological sciences     Volume:  362     ISSN:  0962-8436     ISO Abbreviation:  Philos. Trans. R. Soc. Lond., B, Biol. Sci.     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-06-06     Completed Date:  2007-09-06     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  7503623     Medline TA:  Philos Trans R Soc Lond B Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  1165-83     Citation Subset:  IM    
Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK.
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MeSH Terms
4-Butyrolactone / analogs & derivatives,  physiology
Carbapenems / biosynthesis
Enterobacteriaceae Infections / microbiology
Erwinia / genetics,  metabolism,  pathogenicity,  physiology*
Gene Expression Regulation, Bacterial / physiology
Homoserine / analogs & derivatives,  physiology
Plant Diseases / microbiology*
Quorum Sensing / physiology*
Reg. No./Substance:
0/Carbapenems; 0/Lactones; 0/N-octanoylhomoserine lactone; 1192-20-7/homoserine lactone; 498-19-1/Homoserine; 96-48-0/4-Butyrolactone

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