Potassium Transport and Signaling in Higher Plants
- 29 April 2013
- journal article
- review article
- Published by Annual Reviews in Annual Review of Plant Biology
- Vol. 64 (1), 451-476
- https://doi.org/10.1146/annurev-arplant-050312-120153
Abstract
As one of the most important mineral nutrient elements, potassium (K+) participates in many plant physiological processes and determines the yield and quality of crop production. In this review, we summarize K+ signaling processes and K+ transport regulation in higher plants, especially in plant responses to K+-deficiency stress. Plants perceive external K+ fluctuations and generate the initial K+ signal in root cells. This signal is transduced into the cytoplasm and encoded as Ca2+ and reactive oxygen species signaling. K+-deficiency-induced signals are subsequently decoded by cytoplasmic sensors, which regulate the downstream transcriptional and posttranslational responses. Eventually, plants produce a series of adaptive events in both physiological and morphological alterations that help them survive K+ deficiency.Keywords
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