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Applied and Environmental Microbiology, August 2006, p. 5653-5658, Vol. 72, No. 8
0099-2240/06/$08.00+0     doi:10.1128/AEM.00048-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

A Mutation in the luxS Gene Influences Listeria monocytogenes Biofilm Formation

Shlomo Sela,1* Shmulik Frank,1 Eddy Belausov,2 and Riky Pinto1

Microbial Food-Safety Research Unit, Department of Food Sciences, Institute for Technology and Storage of Fresh Produce,1 Confocal Microscopy Unit, Agricultural Research Organization (ARO), The Volcani Center, Beth-Dagan, Israel2

Received 9 January 2006/ Accepted 1 June 2006

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.

* Corresponding author. Mailing address: Department of Food Sciences, ARO, The Volcani Center, Beth-Dagan 50250, Israel. Phone: 972-3-9683750. Fax: 972-3-9683692. E-mail: shlomos{at}volcani.agri.gov.il.

Applied and Environmental Microbiology, August 2006, p. 5653-5658, Vol. 72, No. 8
0099-2240/06/$08.00+0     doi:10.1128/AEM.00048-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Zhu, X., Long, F., Chen, Y., Knochel, S., She, Q., Shi, X. (2008). A Putative ABC Transporter Is Involved in Negative Regulation of Biofilm Formation by Listeria monocytogenes. Appl. Environ. Microbiol. 74: 7675-7683 [Abstract] [Full Text]  
  • Rieu, A., Briandet, R., Habimana, O., Garmyn, D., Guzzo, J., Piveteau, P. (2008). Listeria monocytogenes EGD-e Biofilms: No Mushrooms but a Network of Knitted Chains. Appl. Environ. Microbiol. 74: 4491-4497 [Abstract] [Full Text]  


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