Yanhong Liu
U.S. Department of Agriculture, Agricultural Research Service, Molecular Characterization of Foodborne Pathogen Research Unit, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038,
Tanzania
Research Article
Genes that are Affected in High Hydrostatic Pressure Treatments in a
Listeria Monocytogenes Scott A ctsR Deletion Mutant
Author(s): Yanhong Liu, Lihan Huang, Rolf D, Joerger and Nereus W. Gunther IVYanhong Liu, Lihan Huang, Rolf D, Joerger and Nereus W. Gunther IV
Listeria monocytogenes is a food-borne pathogen of significant threat to public health. High Hydrostatic Pressure (HHP) treatment can be used to control L. monocytogenes in food. The CtsR (class three stress gene repressor) protein negatively regulates the expression of class III heat shock genes. In a previous study, a spontaneous ctsR L. monocytogenes deletion mutant 2-1 that was able to survive under HHP treatment was identified; however, there is only limited information about the mechanisms of survival and adaptation of this mutant in response to high pressure. Microarray technology was used to monitor the gene expression profiles of ctsR mutant 2-1 under pressure treatments (450 Mpa, 3min). Some of the gene expression changes determined by microarray assays were confirmed by real-time RT-PCR analyses. Compared to non-pressure-treated ctsR mutant 2-1, 14 genes were induced (> .. View More»
DOI:
10.4172/1948-5948.S2-003