Influence of acetylcholine and light on the bioelectric potential of bean (Phaseolus vulgaris L.) hypocotyl hook

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概要

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• Acetylcholine did not show a short-time effect on the extracellular bioelectric potential differences of etiolated bean (Phaseolus vulgaris L.) hypocotyls. Acetylcholine in the dark did not mimic any light effect but influenced the photoelectric responses induced by blue light. Hyperpolarization was inhibited by increasing the acetylcholine concentration. This effect seemed to depend on the increasing hyperpolarization of the resting potential of the hooks during incubation with acetylcholine. Potassium chloride showed the same effect on the photoelectric response but in this case, we found a more positive resting potential with increasing salt concentrations. The potassium content of hypocotyl hooks incubated in the dark in 0.2 M KCl solution with acetyl-choline was significantly less than in the controls.

• 日本植物生理学会の論文

著者

• Hartmann Elmar

  Institute for Plant Physiology, Free University Berlin

• Hartmann Elmar

  Institut Fur Allgemeine Botanik Der Universitat

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• Influence of acetylcholine and light on the bioelectric potential of bean (Phaseolus vulgaris L.) hypocotyl hook

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