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Applied and Environmental Microbiology, September 2005, p. 5601-5603, Vol. 71, No. 9
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.9.5601-5603.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

SHORT REPORT

Surface Attachment of Listeria monocytogenes Is Induced by Sublethal Concentrations of Alcohol at Low Temperatures

Anne Gravesen,* Charidimos Lekkas, and Susanne Knøchel

Department of Food Science, Centre of Advanced Food Studies, LMC, The Royal Veterinary and Agricultural University, Frederiksberg, Denmark

Received 25 November 2004/ Accepted 23 March 2005

Sublethal concentrations of ethanol or isopropanol increased attachment of Listeria monocytogenes at 10, 20, or 30°C; no induction occurred at 37°C. The alcohol induction phenotype was retained in sigB and cesRK mutants; however, the degree of induction was affected. These results suggest that alcohol may contribute to the persistence of L. monocytogenes.

* Corresponding author. Present address: Danisco A/S, Edwin Rahrs Vej 38, DK-8220 Braband, Aarhus, Denmark. Phone: 45 8943 5000. Fax: 45 8625 1077. E-mail: Anne.Gravesen{at}danisco.com.

Applied and Environmental Microbiology, September 2005, p. 5601-5603, Vol. 71, No. 9
0099-2240/05/$08.00+0     doi:10.1128/AEM.71.9.5601-5603.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.





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