Ashley, M. K., Grant, Murray and Grabov , A. (2006) Plant responses to potassium deficiencies : a role for potassium transport proteins. Journal of Experimental Botany, 57 (2). pp. 425-436. doi:10.1093/jxb/erj034 ISSN 0022-0957.

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Abstract

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.

Item Type:	Journal Article
Divisions:	Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- )
Journal or Publication Title:	Journal of Experimental Botany
Publisher:	OUP
ISSN:	0022-0957
Official Date:	2006
Dates:	Date Event 2006 Published
Volume:	57
Number:	2
Page Range:	pp. 425-436
DOI:	10.1093/jxb/erj034
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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