Relative anion permeabilities and concentrations in leaf cells of Pisum sativum determined using electrical measurements and the Goldman equation

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概要

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• The electrical potential difference across the tonoplast of palisade mesophyll cells of leaves of Pisum sativum was 6.6 ± 0.8 mv (positive in the vacuole). The potential across the plasmalemma depended on the particular anion accompanying potassium in the external solution. Assuming that the plasmalemma potentials were diffusion potentials that could be analyzed using the Goldman equation, the permeabilities of pyruvate, formate, butyrate, acetate and bicarbonate into the cells were calculated to be large compared with that of potassium, while the chloride permeability was relatively low. The upper limits for concentrations in the cytoplasm of palisade mesophyll cells in pea leaves were as follows: potassium, 98 mM; total monovalent organic acids, 0.4 mM and bicarbonate, 0.2 mM.

• 日本植物生理学会の論文

著者

• Nobel Park

  Department Of Biophysics And Biochemistry Faculty Of Science University Of Tokyo:department Of Biolo

• Nobel Park

  Department Of Botanical Sciences And Molecular Biology Institute University Of California

• CRAIG RHEA

  Department of Botanical Sciences and Molecular Biology Institute, University of California

• Craig Rhea

  Department Of Botanical Sciences And Molecular Biology Institute University Of California

関連論文

• LOCALIZATION OF LIGHT-INDUCED STRONTIUM ACCUMULATION IN SPINACH CHLOROPLASTS
• Increased CO_2 fixation by Pisum sativum chloroplasts in vitro reflecting a change in coupling caused by illuminating the plants
• Energetic basis of the light-induced chloroplast shrinkage iu vivo
• Relative anion permeabilities and concentrations in leaf cells of Pisum sativum determined using electrical measurements and the Goldman equation
• Light-dependent potassium uptake by Pisum sativum leaf fragments

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