autoinducer
noun
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Definition of autoinducer
: a molecule produced and secreted by bacteria that when present at a threshold concentration in a population of bacteria signals genetic expression in the same bacteria from which it was produced
When a crowd of bacteria and their autoinducers become dense enough, the lights in all the bacteria switch on at once.— Wendy Orent, Discover, July/August 2009 The synchronous response of bacterial populations to autoinducers confers a form of multicellularity to bacteria.— Andrew Camilli and Bonnie L. Bassler, Science, 24 Feb. 2006
Note:
Autoinducers are involved in the quorum sensing used by some bacteria to detect their population density and coordinate group actions (such as the formation of biofilms).
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