Outward-Rectifying K^+ Channels in Stomatal Guard Cell Protoplasts

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概要

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• Ion channels in stomatal guard cell protoplasts from Vicia faba were examined using the patch-clamp technique. Most ion channels having unit conductance ranging between 10 and 30 pS showed clear outward-rectification in symmetrical 50 mM KCl. The large inside-out membranes contained these outward-rectifiers as the major and relatively stable channels. The channels were K^+ ion-selective. Kinetic analysis revealed that the channels have three conductance states: open, closed and inactivated. The rates of transition to and from the inactivated state were highly voltage-dependent.

• 日本植物生理学会の論文

著者

• Hosoi Shigeru

  Tsukuba Research Laboratory Hamamatsu Photonics

• Iino Moritoshi

  Department Of Biology Tokyo Metropolitan University

• Shimazaki Ken-ichiro

  Division Of Environmental Biology National Institute For Environmental Studies

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