Membrane Electrical Noise in Chara corallina: I. A Low Frequency Spectral Component.
Some aspects of the membrane physiology of the giant-celled alga Chara corallina have been studied using the techniques of membrane noise analysis. Cellular voltage noise was measured by means of a microelectrode inserted in the vacuole of the cell. The significant feature of spectra estimated from voltage noise signals in these cells was a low-frequency component possibly associated with the active, electrogenic proton pumping which occurs in these cells. The effect of high external pH is described.
Ross
S
S
Department of Botany, University of Toronto, Toronto, Ontario, Canada M5S 1A1.
Dainty
J
J