[The dependence of the osmotic properties of Escherichia coli bacteria on temperature].
The influence of water solutions of NaCl on the osmoresistance and reproduction of E. coli B/r and E. coli Bs-1 at different temperatures was studied. The increase in cell resistance was studied. The increase in cell resistance to NaCl hypertonia was noticed after the temperature rise from 20 to 37 degrees C. In this case the concentration of NaCl in the medium, which made this medium isotonic, was seen to increase too. On the contrary, when the temperature decreased to 0 degrees, the cell resistance to high concentrations of NaCl was found suppressed. In this case the concentration of NaCl in the medium, which made this medium isotonic, was seen to decrease. The salt tolerance of bacteria reproduction was found to depend on the temperature: the tolerance increased with the temperature rise, and vice versa. It is concluded that the solution temperature was to be considered as one of the major factors governing the osmotic bacterial cell homeostasis.
Morozov
I I
II
Morozova
G V
GV
Petin
V G
VG
D003470:Culture Media; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000187:drug effects / Q000502:physiology*; D009997:Osmotic Pressure; D012965:Sodium Chloride / Q000494:pharmacology; D013696:Temperature
D003470:Culture Media; D012965:Sodium Chloride
Zavisimost' osmoticheskikh svoĭstv bakteriĭ Escherichia coli ot temperatury.