Quorum sensing, a cell–cell communication is how bacteria control gene expression in response to population density. They release chemical signals called autoinducers that trigger changes in gene expression as their concentration increases. Using the technique known as quorum sensing, bacteria can keep an eye out for other bacteria in their surroundings and adjust their behaviour across the population in reaction to changes in the quantity or species of bacteria present in a community. QS oversees a wide range of physiological functions, encompassing symbiosis, virulence, competence, conjugation, antibiotic synthesis, motility, sporulation, and biofilm formation.
Keywords: Quorum sensing, cell-cell communication, bacteria, virulence, biofilm