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Plant responses to potassium deficiencies : a role for potassium transport proteins
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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
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Official URL: http://dx.doi.org/10.1093/jxb/erj034
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: |
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| 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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