期刊
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
卷 120, 期 1-2, 页码 34-45出版社
ELSEVIER
DOI: 10.1016/j.ijfoodmicro.2007.06.012
关键词
quorum sensing; cell-cell communication; autoinducers; LuxS; food related bacteria
Although the study of quorum sensing is relatively recent, it has been well established that bacteria produce, release, detect and respond to small signalling hormone-like molecules called autoinducers. When a critical threshold concentration of the signal molecule is achieved, bacteria detect its presence and initiate a signalling cascade resulting in changes of target gene expression. Cell-cell communication has been shown within and between species with mechanisms substantially different in Gram-positive and Gram-negative bacteria. The identified quorumsensing mechanisms in several food related Gram-negative and Gram-positive bacteria, including bacteriocin synthesis, luxS quorum sensing and interactions between sourdough starter lactic acid bacteria are reviewed. The understanding of extracellular signalling may provide a new basis for controlling over molecular and cellular process the deleterious and useful food related bacteria whose behaviour is mostly a consequence of very complex community interactions. (c) 2007 Elsevier B.V. All rights reserved.
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