Quorum sensing, virulence and secondary metabolite production in plant soft-rotting bacteria

被引:126
作者
Barnard, Anne M. L. [1 ]
Bowden, Steven D. [1 ]
Burr, Tom [1 ]
Coulthurst, Sarah J. [1 ]
Monson, Rita E. [1 ]
Salmond, George P. C. [1 ]
机构
[1] Univ Cambridge, Dept Biochem, Cambridge CB2 1QW, England
关键词
Erwinia; quorum sensing; N-acylhomoserine lactone; carbapenem antibiotic; virulence; phytopathogenicity;
D O I
10.1098/rstb.2007.2042
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
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.
引用
收藏
页码:1165 / 1183
页数:19
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