Journal
FEBS LETTERS
Volume 581, Issue 12, Pages 2348-2356Publisher
WILEY
DOI: 10.1016/j.febslet.2007.03.035
Keywords
potassium uptake; transporter; high-affinity; low-affinity; plant nutrition; ion homeostasis
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Potassium is a major plant nutrient which has to be accumulated in great quantity by roots and distributed throughout the plant and within plant cells. Membrane transport of potassium can be mediated by potassium channels and secondary potassium transporters. Plant potassium transporters are present in three families of membrane proteins: the K+ uptake permeases (KT/HAK/KUP), the K+ transporter (Trk/HKT) family and the cation proton antiporters (CPA). This review will discuss the contribution of members of each family to potassium acquisition, redistribution and homeostasis. (c) 2007 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
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