Role of glycine betaine and related osmolytes in osmotic stress adaptation in Yersinia enterocolitica ATCC 9610

Article Abstract:

Glycine betaine and other related osmolytes induce osmotic tolerance in the Yersinia enterocolitica ATCC 9610 strain. Bacteria growing in a medium with glycine betaine, dimethylglycine or carnitine, have increased intracellular levels of the corresponding osmolyte. The intracellular accumulation of osmolytes accelerates the growth rate of osmotically stressed bacteria cultures. Osmotic upshock and reduced temperatures results in a 30-fold increase in the rate of uptake of labeled glycine betaine suggesting that the osmolytes are taken from the medium through transport.

Observations, Bacterial growth, Stress (Physiology), Yersinia enterocolitica

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Roles of N-acetylglutaminylglutamine amide and glycine betaine in adaptationof Pseudomonas aeruginosa to osmotic stress

Article Abstract:

The osmotic stress adaptation mechanism in the opportunistic pathogen Pseudomonas aeruginosa PAO1 is discussed. Natural abundance C nuclear magnetic spectroscopywas used to identify the major osmolytes synthesized and accumulated by P. aeruginosa PAO1 grown at high osmotic strength. Experiments were also carried out to determine the modulation of bacterial response to osmotic strength by glycine betaine and its derivatives. Results indicate that the intracellular accumulation of solutes is a general response to osmolality.

Measurement, Pseudomonas aeruginosa

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Role of the glycine betaine and carnitine transporters in adaptation of Listeria monocytogenes to chill stress in defined medium

Article Abstract:

The role of Listeria monocytogens glycine betaine and caritine transporters under low temperature stress is determined. L. monocytogens presents a modern challenge to the food industry worldwide that is attributable mainly to the pathogens ability to adapt and proliferate at refrigerator temperatures.

Science & research, Listeria monocytogenes, Glycine

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