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FEBS Lett. 2007 May 25;581(12):2357-66. Epub 2007 Mar 30.

K+ channel activity in plants: genes, regulations and functions.

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Biochimie et Physiologie Moléculaire des Plantes, UMR 5004, CNRS/INRA/Monptellier SupAgro/UM2, 1 Place Viala, 34060 Montpellier Cedex 1, France.


Potassium (K(+)) is the most abundant cation in the cytosol, and plant growth requires that large amounts of K(+) are transported from the soil to the growing organs. K(+) uptake and fluxes within the plant are mediated by several families of transporters and channels. Here, we describe the different families of K(+)-selective channels that have been identified in plants, the so-called Shaker, TPK and Kir-like channels, and what is known so far on their regulations and physiological functions in the plant.

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