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Applied and Environmental Microbiology, September 2002, p. 4666-4671, Vol. 68, No. 9
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.9.4666-4671.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.

Quorum Sensing and Production of Autoinducer-2 in Campylobacter spp., Escherichia coli O157:H7, and Salmonella enterica Serovar Typhimurium in Foods

Orla M. Cloak,,{dagger} Barbara T. Solow,,{ddagger} Connie E. Briggs, Chin-Yi Chen, and Pina M. Fratamico*

Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, Wyndmoor, Pennsylvania 19038

Received 6 February 2002/ Accepted 24 June 2002

Autoinducer molecules are utilized by gram-negative and gram-positive bacteria to regulate density-dependent gene expression by a mechanism known as quorum sensing. PCR and DNA sequencing results showed that Campylobacter jejuni and Campylobacter coli possessed luxS, which is responsible for autoinducer-2 (AI-2) production. Using a Vibrio harveyi luminescence assay, the production of AI-2 was observed in milk, chicken broth, and brucella broth by C. coli, C. jejuni, Salmonella enterica serovar Typhimurium, and Escherichia coli O157:H7 under different conditions.

* Corresponding author. Mailing address: Eastern Regional Research Center, Agricultural Research Service, U.S. Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038. Phone: (215) 233-6525. Fax: (215) 233-6581. E-mail: pfratamico{at}arserrc.gov.

{dagger} Present address: Molecular Circuitry, Inc., King of Prussia, PA 19046.

{ddagger} Present address: Dynport Vaccine Company, Frederick, MD 21702.

Applied and Environmental Microbiology, September 2002, p. 4666-4671, Vol. 68, No. 9
0099-2240/02/$04.00+0     DOI: 10.1128/AEM.68.9.4666-4671.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Quinones, B., Miller, W. G., Bates, A. H., Mandrell, R. E. (2009). Autoinducer-2 Production in Campylobacter jejuni Contributes to Chicken Colonization. Appl. Environ. Microbiol. 75: 281-285 [Abstract] [Full Text]  


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