[Influence of the incubation temperature on the reaction of oligotrophic bacteria to stress].
Representatives of five genera of psychroactive oligotrophic bacteria, Arcocella, Renobacter, Spirosoma, Caulobacter, and Methylobacterium, were for the first time shown to be capable of growing at a negative temperature (-2 degrees C). Long-term cultivation (for 116 days) at a low temperature under limitation by the carbon source is stressful for oligotrophic bacteria and leads to the death of a part of the cell population. The number of viable cells of Caulobacter crescentus decreased by two-three orders of magnitude. Over the studied period of time, Renobacter vacuolatum cells retained viability at a low temperature, whereas at the room temperature, the titer of colony-forming cells decreased by two orders of magnitude under starvation stress.
Slabova
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OI
Nikitin
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DI
D020561:Alphaproteobacteria / Q000254:growth & development / Q000502:physiology*; D002244:Carbon; D003080:Cold Temperature; D003470:Culture Media; D013997:Time Factors
D003470:Culture Media; D002244:Carbon