Demonstration of the K^+ channel in the plasmalemma of tonoplast-free cells of Chara australis
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概要
- 論文の詳細を見る
Tonoplast-free and ATP-less internodal cells of Chara australis were made by perfusing cells internally with a medium containing ethyleneglycol-bis-(β-aminoethylether)N, N'-tetraacetic acid, hexokinase and glucose. Such a cell showed rapid light-induced potential change when it was stained with neutral red (5). The rapid light-induced potential change was inhibited by tetraethylammonium, a known inhibitor of the K^+ channel in nerve cells. Tetraethylammonium acted both from the inside of the membrane and from the outside with similar effectiveness. Nonyl-triethylammonium inhibited the light response far more effectively than did tetraethylammonium. The results suggest the existence of a K^+ channel which is activated by light in the Chara membrane.
- 日本植物生理学会の論文
著者
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Tazawa Masashi
Departlnent Of Biology Faculty Of Science Osaka University
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Shimmmen Teruo
Department of Botany, Faculty of Science, University of Tokyo
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