Stress response of Escherichia coli to elevated hydrostatic pressure

Piezophily: Prokaryotes Exposed to Elevated Hydrostatic Pressure

Induction of oxidative stress by high hydrostatic pressure in Escherichia coli.

Using leaderless alkaline phosphatase as a probe, it was demonstrated that pressure treatment induces endogenous intracellular oxidative stress in Escherichia coli MG1655. In stationary-phase cells, this oxidative stress increased with the applied pressure at least up to 400 MPa, which is well beyond the pressure at which the cells started to become inactivated (200 MPa). In exponential-phase c...

High hydrostatic pressure induces counterclockwise to clockwise reversals of the Escherichia coli flagellar motor.

The bacterial flagellar motor is a reversible rotary machine that rotates a left-handed helical filament, allowing bacteria to swim toward a more favorable environment. The direction of rotation reverses from counterclockwise (CCW) to clockwise (CW), and vice versa, in response to input from the chemotaxis signaling circuit. CW rotation is normally caused by binding of the phosphorylated respon...

Role of prostaglandins in proximal tubule sodium reabsorption: response to elevated renal interstitial hydrostatic pressure.

Previous studies have shown that the elevation of renal interstitial hydrostatic pressure by the direct expansion of renal interstitial volume increases urinary sodium excretion. The objective of the present study was to investigate whether proximal tubules respond to the elevated renal interstitial hydrostatic pressure and whether the inhibition of prostaglandin synthesis would alter the effec...

Interaction between the parameters of hydrostatic pressure and temperature on aspartase of Escherichia coli.

Haight, Roger D. (University of Nebraska, Lincoln) and Richard Y. Morita. Interaction between the parameters of hydrostatic pressure and temperature on aspartase of Escherichia coli. J. Bacteriol. 83:112-120. 1962.-The data obtained from studies of an aspartase preparation and aspartase in cells of Escherichia coli indicate that there is an interaction between the parameters of hydrostatic pres...