Open AccessImmediate and transient inhibition of the respiration of Escherichia coli under hyperosmotic shock
Author(s) -
Meury Jean
Publication year - 1994
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1994.tb07113.x
Subject(s) - respiration , osmotic concentration , plasmolysis , betaine , osmotic shock , escherichia coli , shock (circulatory) , cytoplasm , biology , chemistry , biochemistry , biophysics , botany , medicine , cell wall , gene
The respiration of Escherichia coli is severely inhibited, during hyperosmotic stress period, as a consequence of plasmolysis; deplasmolysis allows the cell to recover respiration. A mutant lacking all K + transport systems can neither deplasmolyze nor recover respiration unless betaine is present in the medium. Betaine, in these conditions, increases both cytoplasmic volume and respiration; this suggests a control of respiration by cytoplasmic volume.