title: Different Transcriptional Responses from Slow and Fast Growth Rate Strains of Listeria monocytogenes Adapted to Low Temperature.
abstract: Listeria monocytogenes has become one of the principal foodborne pathogens worldwide. The capacity of this bacterium to grow at low temperatures has opened an interesting field of study in terms of the identification and classification of new strains of L. monocytogenes with different growth capacities at low temperatures. We determined the growth rate at 8°C of 110 strains of L. monocytogenes isolated from different food matrices. We identified a group of slow and fast strains according to their growth rate at 8°C and performed a global transcriptomic assay in strains previously adapted to low temperature. We then identified shared and specific transcriptional mechanisms, metabolic and cellular processes of both groups; bacterial motility was the principal process capable of differentiating the adaptation capacity of L. monocytogenes strains with different ranges of tolerance to low temperatures. Strains belonging to the fast group were less motile, which may allow these strains to achieve a greater rate of proliferation at low temperature.
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Ninoska
authors.initials: N
authors.lastname: Cordero
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Felipe
authors.initials: F
authors.lastname: Maza
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Helen
authors.initials: H
authors.lastname: Navea-Perez
authors.affiliation: Department of Molecular Biology and Genetics, Istanbul University Istanbul, Turkey.
authors.forename: Andrés
authors.initials: A
authors.lastname: Aravena
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Bárbara
authors.initials: B
authors.lastname: Marquez-Fontt
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Paola
authors.initials: P
authors.lastname: Navarrete
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Figueroa
authors.affiliation: Laboratorio de Bioinformática y Expresión Génica, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de ChileSantiago, Chile; Center for Genome Regulation (Fondap 15090007), Universidad de ChileSantiago, Chile.
authors.forename: Mauricio
authors.initials: M
authors.lastname: González
authors.affiliation: Laboratorio de Bioinformática y Expresión Génica, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de ChileSantiago, Chile; Center for Genome Regulation (Fondap 15090007), Universidad de ChileSantiago, Chile; Mathomics, Center for Mathematical Modeling, Universidad de ChileSantiago, Chile.
authors.forename: Mauricio
authors.initials: M
authors.lastname: Latorre
authors.affiliation: Laboratorio de Microbiología y Probióticos, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile Santiago, Chile.
authors.forename: Angélica
authors.initials: A
authors.lastname: Reyes-Jara
keywords: Listeria monocytogenes; global gene expression; growth rate; low temperature; motility