EFFECT OF TEMPERATURE ON GROWTH OF OBLIGATELY PSYCHROPHILIC BACTERIA

Publisher Website
Google Scholar
Abstract
Effect of temperature on the growth of 5 obligately psychrophilic bacteria [Curtobacterium psychrophilum, Cytophaga antartica, C. xantha, Spirillum pleomorphum, Micrococcus cryophilus] and behavior of C. psychrophilum strain 27-O-b at elevated temperatures were studied. Most obligate psychrophiles showed lower growth activities than a facultative psychrophile at lower temperature. Arrhenius plots of the growth of most of obligate psychrophiles were linear from a temperature little below their optimum growth temperature to 0.degree. C. However, there was a deviation in Arrhenius Plots of C. antarctica strain 16-O-d and a facultative psychrophile, Pseudomonas fluorescens strain 76-O-a. Therefore, it seems unreasonable to characterize psychrophiles only from the points of growth activities at lower temperature and/or a pattern of the Arrhenius plot. When C. psychrophilum was transferred to elevated temperatures after preincubation at the optimum growth temperature of 9.degree. C, it exhibited faster growth for the first few hours than at 9.degree. C, and then ceased.

This publication has 6 references indexed in Scilit: