Skip Navigation



Plant and Cell Physiology Advance Access published online on January 8, 2008
Plant and Cell Physiology, doi:10.1093/pcp/pcn002
This Article
Right arrow Advance Access manuscript (PDF)
Right arrow All Versions of this Article:
49/2/264    most recent
pcn002v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Shimmen, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Shimmen, T.
Agricola
Right arrow Articles by Shimmen, T.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2008. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

Electrophysiological characterization of node in Chara corallina: functional differentiation for wounding response

Teruo Shimmen

Department of Life Science, Graduate School of Life Science, University of Hyogo, Harima Science Park City, Hyogo 678-1297, Japan

Name and address for editorial correspondence: Prof. Teruo Shimmen, Department of Life Science, Graduate School of Life Science, University of Hyogo, Harima Science Park City, Hyogo, 678-1297 Japan, Tel 0791-58-0174, Fax 0791-58-0175, Email shimmen{at}sci.u-hyogo.ac.jp


  Abstract

Electrical characteristics of the node were analyzed in comparison with the flank of the internodal cell in Chara corallina. The dependencies of the membrane potential of the node on pH and K+ concentration were almost the same as those of the flank. In the flank, increase in the Ca2+ concentration stopped the depolarization under the presence of 100 mM KCl. In the node, however, Ca2+ could not stop the depolarization induced by 100 mM KCl. It has been reported that the node has a function to tranduce the signal of osmotic shock into a transient depolarization (Shimmen (2003) Plant & Cell Phsiol. 44: 1215-1224). By combination with the osmotic shock, 10 mM K+ could induce a long-lasting depolarization of the node. These electrical characteristics of the node were suggested to be responsible for the electrical response to wounding in Characeae.

Keywords: Chara - K+ channel - Depolarization - Membrane potential - Proton pump - Wounding response

(Received November 10, 2007; Accepted December 30, 2007)
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.