A Mutation in the luxS gene influences Listeria monocytogenes biofilm formation |
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| Authors: | Sela Shlomo Frank Shmulik Belausov Eddy Pinto Riky |
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| Affiliation: | Microbial Food-Safety Research Unit, Department of Food Sciences, Institute for Technology and Storage of Fresh Produce, Agricultural Research Organization (ARO), The Volcani Center, Beth-Dagan 50250, Israel. shlomos@volcani.agri.gov.il |
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| Abstract: | Using a Vibrio harveyi reporter strain, we demonstrated that Listeria monocytogenes secretes a functional autoinducer 2 (AI-2)-like signal. A luxS-deficient mutant produced a denser biofilm and attached to a glass surface 19-fold better than the parent strain. Exogenous AI-2 failed to restore the wild-type phenotype to the mutant. It seems that an intact luxS gene is associated with repression of components required for attachment and biofilm formation. |
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