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Team:Paris/Quorum sensing
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===Presentation of the phenomenon of ''quorum-sensing''=== | ===Presentation of the phenomenon of ''quorum-sensing''=== | ||
[[Image:Squid.jpg|thumb|200px|The Hawaiian bobtail squid have a symbiotic relationship with ''Vibrio fischeri'']] | [[Image:Squid.jpg|thumb|200px|The Hawaiian bobtail squid have a symbiotic relationship with ''Vibrio fischeri'']] | ||
| - | The phenomenon of ''quorum sensing'' was first discovered in ''Vibrio fischeri''. This bacteria only expresses luciferase when the density of bacteria is very high (10<sup>11</sup>bact/mL). Typically, the bacteria does not express bioluminescence when they are free living in the ocean. | + | The phenomenon of ''quorum sensing'' was first discovered in ''Vibrio fischeri''. This bacteria only expresses luciferase when the density of bacteria is very high (10<sup>11</sup>bact/mL). Typically, the bacteria does not express bioluminescence when they are free living in the ocean. At the contrary, they express luciferase when they are highly concentrated in the photophore of Hawaiian bobtail squid. |
Revision as of 17:33, 29 October 2008
Presentation of the phenomenon of quorum-sensing
The phenomenon of quorum sensing was first discovered in Vibrio fischeri. This bacteria only expresses luciferase when the density of bacteria is very high (1011bact/mL). Typically, the bacteria does not express bioluminescence when they are free living in the ocean. At the contrary, they express luciferase when they are highly concentrated in the photophore of Hawaiian bobtail squid.
