Role of σ^B in Adaptation of Listeria monocytogenes to Growth at Low Temperature

Authors

Lynne A. Becker, University of Nebraska-Lincoln
Stefanie N. Evans, University of Nebraska-Lincoln
Robert W. Hutkins, University of Nebraska-LincolnFollow
Andrew K. Benson, University of Nebraska-LincolnFollow

Date of this Version

December 2000

Comments

Published in JOURNAL OF BACTERIOLOGY, Dec. 2000, p. 7083–7087 Vol. 182, No. 24, 2000. Copyright © 2000, American Society for Microbiology. Used by permission.

Abstract

The activity of σ^B in Listeria monocytogenes is stimulated by high osmolarity and is necessary for efficient uptake of osmoprotectants. Here we demonstrate that, during cold shock, σ^B contributes to adaptation in a growth phase-dependent manner and is necessary for efficient accumulation of betaine and carnitine as cryoprotectants.