Effects of sodium, potassium and chloride ions on the membrane potential of Valonia aegagropila
スポンサーリンク
概要
- 論文の詳細を見る
Changes of the resting potential of Valonia cell in sea water against a 10-fold increase of the external concentrations of K^+, Na^+ and Cl^- were 1±1, 6.2±0.1 and 38.9±4 mV, respectively. The potassium conductance was smaller than 7 μ/cm^2, while the Na and Cl conductances were 45 and 281μ/cm^2, respectively, in normal sea water. The positive vacuolar potential could be explained by these ionic conductances. On the other hand, the membrane became more sensitive to K^+ if the cell was incubated for about 30 min in K-rich (100 mM) sea water. It is worth noting, however, that the membrane conductance was lower in the K-rich sea water than in the normal sea water.
- 日本植物生理学会の論文
著者
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Asai Kazumi
Department Of Biology College Of General Education Osaka University
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Kishimoto Uichiro
Department Of Biology College Of General Education Osaka University
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