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Selected Publication:

Publication type: Journal Article
Document type: Full Paper

Year: 2019

Author(s): Naditz, AL; Dzieciol, M; Wagner, M; Schmitz-Esser, S

Title: Plasmids contribute to food processing environment-associated stress survival in three Listeria monocytogenes ST121, ST8, and ST5 strains.

Source: Int J Food Microbiol. 2019; 299:39-46



Authors Vetmeduni Vienna:

Dzieciol Monika
Wagner Martin

Vetmed Research Units
Institute of Food Safety, Food Technology and Veterinary Public Health, Unit of Food Microbiology


Project(s): Austrian Competence Centre for Feed and Food Quality, Safety and Innovation


Abstract:
Listeria monocytogenes is a food-borne pathogen responsible for the disease listeriosis and is commonly isolated from food and food production facilities. Many L. monocytogenes strains contain plasmids, though the contributions of plasmids to survival in food production environments are unknown. Three L. monocytogenes ST5, ST8, and ST121 strains containing plasmids, which harbor putative stress response genes, were cured of their plasmids. Wildtype (WT) and plasmid-cured strains were exposed to disinfectant, oxidative, heat, acid, or salt stress. After stress exposure, cells were plated for colony forming unit (CFU) counts to determine survivors. L. monocytogenes WT strains exposed to 0.01% (vol/vol) H


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