[The effect of the physiological state of Escherichia coli on the nucleoid ultrastructure under stress exposures].
The energetic state and activity of polyamine-synthesizing system of E. coli were studied under conditions of aerobic-anaerobic and pH transitions, nutrition shifts, osmotic and heat shocks. The electron microscopy of cells showed a correlation between cell physiological state and nucleoid ultrastructure. The role of energetic status and polyamines in the regulation of DNA supercoiling is discussed which is a putative cause for the changes observed in the nucleoid ultrastructure.
Tkachenko
A G
AG
Chudinov
A A
AA
Churilova
N S
NS
D000332:Aerobiosis; D000693:Anaerobiosis; D002467:Cell Nucleus / Q000502:physiology* / Q000648:ultrastructure; D004269:DNA, Bacterial / Q000502:physiology / Q000648:ultrastructure; D004278:DNA, Superhelical / Q000502:physiology / Q000648:ultrastructure; D004734:Energy Metabolism / Q000502:physiology; D004926:Escherichia coli / Q000502:physiology* / Q000648:ultrastructure; D006863:Hydrogen-Ion Concentration; D008854:Microscopy, Electron; D013696:Temperature
D004269:DNA, Bacterial; D004278:DNA, Superhelical
Vliianie fiziologicheskogo sostoianiia Escherichia coli na ul'trastrukturu nukleoida v usloviiakh stressovykh vozdeĭstviĭ.