单词	quorum sensing
释义	quorum sensing noun : a regulatory mechanism of bacteria that involves the release of molecules which when present at threshold concentrations signal the expression of bacterial genes controlling specific group actions (such as the formation of biofilms) Example Sentences Recent Examples on the Web Particularly in the latter case, scientists think that the bioluminescence is driven by quorum sensing, a form of biological signaling that allows bacteria to determine how large and concentrated their species is in an area. K.e.d. Coan, Ars Technica, 30 July 2022 This glow is triggered by quorum sensing, which is a form of cell-to-cell communication where bacteria release a chemical signal into their environment. Grrlscientist, Forbes, 11 July 2022 In this scenario, through quorum sensing, these bacteria set off a chemical glow that can become the largest display of bioluminescence on the planet. Sam Keck Scott, Smithsonian Magazine, 27 June 2022 When the density of bacteria gets high enough for their chemical signals to reach each other’s diffusional spheres of influence (about 10 micrometers from the cell surface, or 10 times its diameter), then quorum sensing takes effect. Members Of The Ocean Memory Project, Scientific American, 15 Aug. 2020 One species that relies on quorum sensing is P. aeruginosa, a nasty pathogen that infects and causes disease in plants, animals and, when an opportunity presents itself, in humans. Diana Gitig, Ars Technica, 20 Dec. 2019 Word History First Known Use 1994, in the meaning defined above
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