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AOBPreview published online on May 11, 2007
Annals of Botany, doi:10.1093/aob/mcm066
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© The Author 2007. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

BOTANICAL BRIEFING

Plant KT/KUP/HAK Potassium Transporters: Single Family – Multiple Functions

Alexander Grabov*

Division of Biology, Imperial College London, Wye Campus, Wye, Ashford, Kent TN25 5AH, UK

* E-mail a.grabov{at}imperial.ac.uk

Received: 3 October 2006    Returned for revision: 30 October 2006    Accepted: 2 March 2007   

Background and Aims: Potassium transporters belonging to the KT/KUP/HAK family are important for various aspects of plant life including mineral nutrition and the regulation of development. Genes encoding these transporters are present in the genomes of all plants, but have not been found in the genomes of Protista or Animalia. The aim of this Botanical Briefing is to analyse the function of KT/KUP/HAK transporters from evolutionary, molecular and physiological perspectives.

Scope: This Briefing covers the phylogeny and evolution of KT/KUP/HAK transporters, the role of transporters in plant mineral nutrition and potassium homeostasis, and the role of KT/KUP/HAK transporters in plant development.

Key words: Potassium transporters, mineral nutrition, K+ transport, plant development, homeostasis, salt stress, root-hairs, cell expansion


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