120873 final.pdf (1.04 MB)
Signalling by potassium: another second messenger to add to the list?
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’.
History
Publication title
Journal of Experimental BotanyVolume
68Issue
15Pagination
4003-4007ISSN
0022-0957Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Oxford Univ PressPlace of publication
Great Clarendon St, Oxford, England, Ox2 6DpRights statement
© 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/Repository Status
- Open