Effect of light upon membrane potential, conductance, and ion fluxes inRiccia fluitans

  title={Effect of light upon membrane potential, conductance, and ion fluxes inRiccia fluitans},
  author={Hubert H. Felle and Friedrich W. Bentrup},
  journal={The Journal of Membrane Biology},
The membrane potentialE m , slope conductanceg m , and fluxes of86Rb+/K+ and36Cl− have been measured on cells of the aquatic liverwortRiccia fluitans in artificial pond water of pH 4 to 8 and 0.1 to 10mm K 0 + , in the dark and 1 mW/cm2 of white light. In the darkE m reflects a passive diffusion potential according to the Goldman equation with relative ionic permeabilities,P H/P K/P Na=10∶1∶0.02. In the light,E m of −200 to −240 mV exceeds the most negative ion diffusion potential, i.e.E K, by… CONTINUE READING
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