Skip Navigation



Plant and Cell Physiology Advance Access published online on November 2, 2006
Plant and Cell Physiology, doi:10.1093/pcp/pcl030
This Article
Right arrow Advance Access manuscript (PDF)
Right arrow All Versions of this Article:
47/12/1674    most recent
pcl030v1
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 Kasukabe, N.
Right arrow Articles by Kakutani, T.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kasukabe, N.
Right arrow Articles by Kakutani, T.
Agricola
Right arrow Articles by Kasukabe, N.
Right arrow Articles by Kakutani, T.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2006. 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

Short Communication

Expression and Ca2+ Dependency of Plasma Membrane K+ Channels of Tobacco Suspension Cells Adapted to Salt Stress

Naoki Kasukabe 1, Megumi Watanabe-Sugimoto 2, Ken Matsuoka 3, Eiji Okuma 1, Ichiro Obi 4, Yoshimasa Nakamura 1, Yasuaki Shimoishi 1, Yoshiyuki Murata 1 *, and Tadaaki Kakutani 4

1 Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Okayama 700-8530, Japan
2 Department of Agriculture, Okayama University, 1-1-1 Tsushima-naka, Okayama 700-8530, Japan
3 RIKEN Yokohama Institute, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama City, Kanagawa, 230-0045, Japan; Present address: Laboratory of Plant Nutrition, Faculty of Agriculture, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
4 Division of Applied Life Science, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan

* To whom correspondence should be addressed.
Yoshiyuki Murata, E-mail: muta{at}cc.okayama-u.ac.jp


  Abstract

The expression of plasma membrane K+ channels of NaCl-adapted tobacco suspension cells and effects of extracellular Ca2+ on plasma membrane K+ channels were investigated. RT-PCR analysis showed that expression of TORK1, which encodes a K+ channel, was much lower in NaCl-adapted cells than in NaCl-unadapted cells. The magnitude of the outward K+ currents of NaCl-adapted as well as NaCl-unadapted cells decreased with increasing extracellular Ca2+ but there is no significant difference in Ca2+ dependency of K+ current. These analyses suggest that reduction of the number of K+ channels might cause NaCl-adaptation of cells through the decreasing of outward K+ currents.

Keywords: Extracellular Ca2+; Nicotiana tabacum; K+ channel; Plasma membrane; Salt adaptation.
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 Physiol.Home page
X. Ma, O. Shor, S. Diminshtein, L. Yu, Y. J. Im, I. Perera, A. Lomax, W. F. Boss, and N. Moran
Phosphatidylinositol (4,5)Bisphosphate Inhibits K+-Efflux Channel Activity in NT1 Tobacco Cultured Cells
Plant Physiology, February 1, 2009; 149(2): 1127 - 1140.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
X. Y. Dai, Y. R. Su, W. X. Wei, J. S. Wu, and Y. K. Fan
Effects of top excision on the potassium accumulation and expression of potassium channel genes in tobacco
J. Exp. Bot., January 1, 2009; 60(1): 279 - 289.
[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.