Skip Navigation


JXB Advance Access originally published online on December 19, 2005
Journal of Experimental Botany 2006 57(2):425-436; doi:10.1093/jxb/erj034
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
57/2/425    most recent
erj034v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
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 ISI Web of Science
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 arrow Search for citing articles in:
ISI Web of Science (10)
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Ashley, M. K.
Right arrow Articles by Grabov, A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Ashley, M. K.
Right arrow Articles by Grabov, A.
Agricola
Right arrow Articles by Ashley, M. K.
Right arrow Articles by Grabov, A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author [2005]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

RESEARCH PAPER

Plant responses to potassium deficiencies: a role for potassium transport proteins

M. K. Ashley, M. Grant and A. Grabov*

Division of Biology, Imperial College London, Wye Campus, Wye, Ashford TN25 5AH, Kent, UK

* To whom correspondence should be addressed. E-mail: a.grabov{at}imperial.ac.uk

The availability of potassium to the plant is highly variable, due to complex soil dynamics, which are strongly influenced by root–soil interactions. A low plant potassium status triggers expression of high affinity K+ transporters, up-regulates some K+ channels, and activates signalling cascades, some of which are similar to those involved in wounding and other stress responses. The molecules that signal low K+ status in plants include reactive oxygen species and phytohormones, such as auxin, ethylene and jasmonic acid. Apart from up-regulation of transport proteins and adjustment of metabolic processes, potassium deprivation triggers developmental responses in roots. All these acclimation strategies enable plants to survive and compete for nutrients in a dynamic environment with a variable availability of potassium.

Key words: Acclimation, mineral nutrition, plant plasticity, potassium, potassium deficiencies


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
 J Exp BotHome page
Z. Qi, C. R. Hampton, R. Shin, B. J. Barkla, P. J. White, and D. P. Schachtman
The high affinity K+ transporter AtHAK5 plays a physiological role in planta at very low K+ concentrations and provides a caesium uptake pathway in Arabidopsis
J. Exp. Bot., February 16, 2008; (2008) erm330v1.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
A. Grabov
Plant KT/KUP/HAK Potassium Transporters: Single Family - Multiple Functions
Ann. Bot., June 1, 2007; 99(6): 1035 - 1041.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
N. Yamaji and J. F. Ma
Spatial Distribution and Temporal Variation of the Rice Silicon Transporter Lsi1
Plant Physiology, March 1, 2007; 143(3): 1306 - 1313.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
L. Li, B.-G. Kim, Y. H. Cheong, G. K. Pandey, and S. Luan
A Ca2+ signaling pathway regulates a K+ channel for low-K response in Arabidopsis
PNAS, August 15, 2006; 103(33): 12625 - 12630.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. W. Szczerba, D. T. Britto, and H. J. Kronzucker
Rapid, Futile K+ Cycling and Pool-Size Dynamics Define Low-Affinity Potassium Transport in Barley
Plant Physiology, August 1, 2006; 141(4): 1494 - 1507.
[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.