Ion homeostasis

Amtmann, A. and Leigh, R. (2009) Ion homeostasis. In: Pareek, A., Sopory, S.K., Bohnert, H.J. and Govindjee, (eds.) Abiotic Stress Adaptation in Plants: Physiological, Molecular and Genomic Foundation. Springer: Dordrecht, pp. 245-262. ISBN 9789048131112 (doi:10.1007/978-90-481-3112-9_12)

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Ion concentrations in cell compartments and tissues are maintained within particular limits that are optimal for plant performance. In this chapter we recapitulate the general processes that are needed for a functional ion homeostat and propose models of how these may apply to the regulation of ion concentrations in single cells and multicellular tissues. The role of K+ and Na+ homeostasis in the response of plants to salinity is then discussed, with particular emphasis on how cytoplasmic Na+ accumulation is minimized. The relative importance of Na+ exclusion, extrusion, and compartmentalization are considered. Finally the molecular mechanisms underlying these three strategies are described and their potential role in one model of tissue Na+ homeostasis in salt-grown plants is discussed.

Item Type:Book Sections
Glasgow Author(s) Enlighten ID:Amtmann, Professor Anna
Authors: Amtmann, A., and Leigh, R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Molecular Cell and Systems Biology

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