Quorum sensing is a widespread system of cell to cell communication in bacteria that is stimulated in response to population density and relies on hormone-like chemical molecules to control gene expression. In mutualistic marine organisms like Vibrio, this system enables them to express certain processes, like virulence, only when its impact as a group would be maximized. An N-acylhomoserine lactone-dependent LuxI/R quorum sensing system has first been exemplified in Vibrio fischeri in the 1970s, regulating core bioluminescence genes. Since then, quorum sensing in Vibrio has been shown to influence a wide variety of process ranging from virulence factor formation to sporulation and motility.
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Last date updated on November, 2020