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Abstract

Cytosolic potassium homeostasis and the ability of various tissues to retain potassium under stress have emerged as important for salinity tolerance in plants, but recent evidence suggests that stress-induced K+ efflux may be equally important in mediating growth and development under hostile conditions. Here, the evidence is assessed, and the already-proposed concept of potassium efflux being a switch between metabolic and defence responses is developed. A new model is put forward which suggests signalling roles for cytosolic K+ changes, alongside well-known cytosolic Ca2+ and ROS ‘signatures’.

Item Type:	Article
Authors/Creators:	Shabala, S
Keywords:	potassium, stress, signalling
Journal or Publication Title:	Journal of Experimental Botany
Publisher:	Oxford Univ Press
ISSN:	0022-0957
DOI / ID Number:	https://doi.org/10.1093/jxb/erx238
Copyright Information:	© The Author 2017. Published by Oxford University Press on behalf of the Society for Experimental Biology. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/
Related URLs:	Google Scholar: Shabala, S UTAS Profile: Shabala, S
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