Journal Article

Studies on Mechanoperception in Characean Cells: Pharmacological Analysis

Teruo Shimmen

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 38, issue 2, pages 139-148
Published in print January 1997 | ISSN: 0032-0781
Published online January 1997 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029144
Studies on Mechanoperception in Characean Cells: Pharmacological Analysis

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

The mechanisms for generating receptor potentials and action potentials upon mechanical stimulation were studied in internodal cells of Chara. Receptor potentials and the subsequent action potentials could be generated even when the electrogenic proton pump was inhibited, indicating that the proton pump does not play a central role in generating receptor potentials and action potentials. The involvement of Ca2+ and/or Cl channels in both receptor and action potentials was suggested, based on the equilibrium potentials of these ions across the plasma membrane. Inhibitors of the Ca2+ channel, Cl channel and stretch-activated channel could not inhibit generation of the receptor potential. These findings suggested that the channels involved in generating the receptor potential are insensitive to these channel inhibitors, although all inhibitors significantly inhibited the action potential.

Keywords: Action potential; Chara; Electrogenic proton pump; Mechanoperception; Mechanical stimulus; Receptor potential

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.