Skip Navigation


Plant and Cell Physiology Advance Access first published online on January 19, 2005
This version published online on January 29, 2005
Plant and Cell Physiology, doi:10.1093/pcp/pci004
This Article
Right arrow Advance Access manuscript (PDF)
Right arrow All Versions of this Article:
46/1/130    most recent
pci004v2
pci004v1
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 Kaneko, T.
Right arrow Articles by Kikuyama, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kaneko, T.
Right arrow Articles by Kikuyama, M.
Agricola
Right arrow Articles by Kaneko, T.
Right arrow Articles by Kikuyama, M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology 2004 © The Japanese Society of Plant Physiologists (JSPP); all rights reserved.
Received May 24, 2004
Accepted October 22, 2004

Regular Paper

Possible Involvement of Mechanosensitive Ca2+ Channels of Plamsma Membrane in Mechanoperception in Chara

Toshiyuki Kaneko 1, Chiyuki Saito 2, Teruo Shimmen 3, and Munehiro Kikuyama 4*

1 Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
2 Department of Biology, Faculty of Science, Niigata University, Niigata 950-2181, Japan
3 Department of Life Science, Graduate School of Life Science, University of Hyogo, Harima Science Park City, Hyogo 678-1297, Japan
4 Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; Department of Biology, Faculty of Science, Niigata University, Niigata 950-2181, Japan


  Abstract

When an internodal cell of Chara corallina was stimulated with a mechanical pulse of various amplitude lasting for 0.1 s (mechanical stimulus), the cell generated a receptor potential, which was highly dependent not only on the strength of the stimulus but also extracellular Cl- concentration. Extracellular Ca2+ was indispensable for generating receptor potential, since removal of Ca2+ reversibly inhibited generation of the receptor potential. Cytoplasmic Ca2+ level transiently rose upon mechanical stimulation. The stronger the mechanical stimulus was, the larger the increase in cytoplasmic level of Ca2+ was. It was discussed that the first step of receptor potential is an activation of mechanosensitive Ca2+ channels at the plasma membrane.

Keywords: Ca2+; Chara; mechanical stimulus; mechanosensitive Ca2+ channel; receptor potential.
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
T. Shimmen
Electrophysiological Characterization of the Node in Chara corallina: Functional Differentiation for Wounding Response
Plant Cell Physiol., February 1, 2008; 49(2): 264 - 272.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
T. Shimmen
Electrical Perception of the 'Death Message' in Chara: Analysis of K+-sensitive Depolarization
Plant Cell Physiol., November 1, 2005; 46(11): 1839 - 1847.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
K. Iwabuchi, T. Kaneko, and M. Kikuyama
Ionic Mechanism of Mechano-perception in Characeae
Plant Cell Physiol., November 1, 2005; 46(11): 1863 - 1871.
[Abstract] [Full Text] [PDF]


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.