Morozov I I, Morozova G V, Petin V G
Tsitologiia. 1996;38(12):1269-73.
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.
研究了不同温度下氯化钠水溶液对大肠杆菌B/r和大肠杆菌Bs-1的渗透压抗性及繁殖的影响。研究了细胞抗性的增加情况。当温度从20℃升高到37℃后,观察到细胞对氯化钠高渗的抗性增加。在这种情况下,使培养基等渗的氯化钠浓度也增加。相反,当温度降至0℃时,发现细胞对高浓度氯化钠的抗性受到抑制。在这种情况下,使培养基等渗的氯化钠浓度降低。发现细菌繁殖的耐盐性取决于温度:耐受性随温度升高而增加,反之亦然。得出结论,溶液温度应被视为控制细菌细胞渗透稳态的主要因素之一。