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Applied and Environmental Microbiology, January 2006, p. 937-941, Vol. 72, No. 1
0099-2240/06/$08.00+0     doi:10.1128/AEM.72.1.937-941.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Autoinducer 2 Affects Biofilm Formation by Bacillus cereus

Sandrine Auger,1,{dagger} Evelyne Krin,2 Stéphane Aymerich,1 and Michel Gohar1*

Microbiologie et Génétique Moléculaire, INRA-CNRS-INAPG, F-78850 Thiverval-Grignon, France,1 Génétique des Génomes Bactériens, Institut Pasteur, 28 rue du Docteur Roux, F-75724 Paris cedex 15, France2

Received 18 May 2005/ Accepted 1 November 2005

Cell-free supernatants from growing Bacillus cereus strain ATCC 10987 induced luminescence in a Photorhabdus luminescens {Delta}luxS mutant, indicating the production of functional autoinducer 2 (AI-2). The exogenous addition of in vitro synthesized AI-2 had an inhibitory effect on biofilm formation by B. cereus and promoted release of the cells from a preformed biofilm.

* Corresponding author. Mailing address: Microbiologie et Génétique Moléculaire, INRA (UMR1238), CNRS (UMR2585), INAPG, F-78850 Thiverval-Grignon, France. Phone: 33 1 30 81 54 49. Fax: 33 1 30 43 80 97. E-mail: michel.gohar{at}jouy.inra.fr

{dagger} Present address: Génétique Microbienne, INRA, Domaine de Vilvert, 78352 Jouy en Josas, France.

Applied and Environmental Microbiology, January 2006, p. 937-941, Vol. 72, No. 1
0099-2240/06/$08.00+0     doi:10.1128/AEM.72.1.937-941.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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