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Macronutrient homeostasis

How to survive on low potassium

Potassium (K+) is taken up by roots and redistributed within organs and organelles by a large number of channels and transporters. Export of K+ stored in vacuoles, required to support growth under limiting conditions, is mediated by the interaction of K+ channels with a calcium-dependent signalling network.

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Fig. 1: A Ca2+-dependent network is responsible for the release of K+ from the vacuole to the cytosol in periods of low K+.


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Correspondence to Enrico Martinoia.

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Liu, G., Martinoia, E. How to survive on low potassium. Nat. Plants 6, 332–333 (2020).

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