[Ability of opportunistic enterobacteria to adapt to different temperatures].
OBJECTIVE
To study variability of enzymatic apparatus of opportunistic enterobacteria.


METHODS
Clinical strains of Morganella morganii, Citrobacter freundii, Proteus mirabilis isolated from patients treated in Irkutsk Regional Hospital for Infectious Diseases. Activity of cellulase and lipase as well as amount of auxins and gibberellins was studied in these bacteria at different cultivation temperatures.


RESULTS
It was shown that studied species isolated from humans enterobacteria are able to produce plant growth regulators amount of which depends from cultivation temperature and type of microorganism. Activity of cellulase sharply rises if temperature falls.


CONCLUSIONS
Obtained results show high adaptation potential of opportunistic bacteria from Enterobacteriaceae family. Switch on saprophytic mechanism after fall of temperature to environment-corresponding values allows them to survive in soil and arrange different interactions with soil biota including plants.
Markova
Iu A
IuA
Belovezhets
L A
LA
Barov
I Iu
IIu
Savilov
E D
ED
D000222:Adaptation, Physiological; D002480:Cellulase / Q000096:biosynthesis; D016971:Citrobacter freundii / Q000378:metabolism / Q000472:pathogenicity / Q000502:physiology*; D005875:Gibberellins / Q000378:metabolism; D006801:Humans; D007210:Indoleacetic Acids / Q000378:metabolism; D008049:Lipase / Q000378:metabolism; D020613:Morganella morganii / Q000378:metabolism / Q000472:pathogenicity / Q000502:physiology*; D011513:Proteus mirabilis / Q000378:metabolism / Q000472:pathogenicity / Q000502:physiology*; D013696:Temperature
D005875:Gibberellins; D007210:Indoleacetic Acids; D008049:Lipase; D002480:Cellulase