Is there any explanation for this that why the same specie of bacteria is qourum sensing positive when it is isolated from clinical sample but when we isolate that specie from marine sediment, it is qourum sensing negative? what can be the possible reason?
Hi, dr
Many species of bacteria use quorum sensing (QS) to coordinate gene expression according to the density of their local population.
Consequently, the clinical sample coded the QS genes to protect themselves from the immune system or to resist a specific antibiotic, which means that the QS genes were turned on to get rid of the stress that they are exposed to in their environment and to keep of its genetic fittness compared with the marine sediment sample.
Zina Hashem Shehab cool, thank you for the clarification. it makes sense... jazakAllah
QS systems are strain dependent. Sometimes, but not always, this fact is related to the acquisition of the QS genes through horizontal transfer.
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