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

2002; American Society for Microbiology; Volume: 68; Issue: 9 Linguagem: Inglês

10.1128/aem.68.9.4666-4671.2002

1098-5336

Orla M. Cloak, Barbara T. Solow, Connie Briggs, Chin‐Yi Chen, Pina M. Fratamico,

Bacteriophages and microbial interactions

ABSTRACT 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.