Effect of temperature on the activities of the electron transport systems and the coupled phosphorylation in mesophilic, psychrotrophic and psychrophilic bacteria.
- 1 January 1979
- journal article
- research article
- Published by Microbiology Research Foundation in The Journal of General and Applied Microbiology
- Vol. 25 (5) , 299-306
- https://doi.org/10.2323/jgam.25.299
Abstract
In sonic extracts, the electron transport system of a psychrotrophic Pseudomonas sp. strain 351 (P. 351) was operating more actively than that of P. aeruginosa at 25.degree. C and below. The coupled phosphorylation in P. 351 was also brought about by as much as about 3 times that in P. aeruginosa at 7.degree. C. The activities of the NADH oxidation and the coupled phosphorylation were influenced by the growth temperatures in P. 351, but not in P. aeruginosa. The P/O ratios in the sonic extracts of P. 351, P. aeruginosa and Vibrio sp. strain ABE-1, a psychrophile, were higher at 7.degree. than at 25.degree., even when the growth temperatures were varied. The efficiency of the coupled phosphorylation does not seem to be depressed under lower temperatures in these bacteria.This publication has 0 references indexed in Scilit: