Effect of External pH on the Cytoplasmic and Vacuolar pHs in Mung Bean Root-Tip Cells : A ^<31>P Nuclear Magnetic Resonance Study

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概要

• 論文の詳細を見る

• The effect of the external pH on the intracellular pH in mung bean (Vigna mungo (L.) Hepper) root-tip cells was investigated with the ^<31>P nuclear magnetic resonance (NMR) method. The ^<31>P NMR spectra showed three peaks caused by cytoplasmic G-6-P, cytoplasmic P_i and vacuolar P_i. The cytoplasmic and vacuolar pH_s could be determined by comparing the P_i chemical shifts with the titration curve. When the external pH was changed over a range from pH 3 to 10, the cytoplasmic pH showed smaller changes than the vacuolar pH, suggesting that the former is regulated more strictly than the latter. The H^+-ATPase inhibitor, DCCD, caused the breakdown of the mechanism that regulates the intracellular pH. H^+-ATPase appears to have an important part in the regulation of the intracellular pH.

• 日本植物生理学会の論文

著者

• SAKATA Makoto

  Department of Applied Physics, Nagoya University

• TORIMITSU Keiichi

  NTT Basic Research Laboratories

• Torimitsu K

  Ntt Basic Research Laboratories

• Sakata M

  Department Of Applied Physics Nagoya University

• Sakata M

  Kyorin Univ. Tokyo Jpn

• Sakata Makoto

  Department Of Applied Physics Faculty Of Engineering Nagoya University

• OHTA Eiji

  Keio University

• OHTA Eiji

  Department of Material Science, Faculty of Science and Technology, Keio University

• Yazaki Yoshiaki

  Department of Instrumentation Engineering, Faculty of Science and Technology, Keio University

• Torimitsu Keiichi

  Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University

• Torimitsu Keiichi

  Crest-jst

• Ohta E

  Keio University

• Ohta Eiji

  Department Of Agricultural Chemistry Faculty Of Agriculture Kyoto University

• Nagasuka Kinuyo

  Department of Instrumentation Engineering, Faculty of Science and Technology, Keio University

• YAZAKI Yoshiaki

  Dept.Plant Physiol., NIAR

• Yazaki Y

  National Inst. Agrobiological Resources Tsukuba Jpn

• Yazaki Yoshiaki

  Department Of Applied Physiology National Institute Of Agrobiological Resources

• Nagasuka Kinuyo

  Department Of Instrumentation Engineering Faculty Of Science And Technology Keio University

• Ohta Eiji

  Department of Instrumentation Engineering,Faculty of Science and Technology,Keio University

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