Potassium transport and signaling in higher plants

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 pla...

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Bibliographic Details
Published in:Annual review of plant biology 2013-01, Vol.64 (1), p.451-476
Main Authors: Wang, Yi, Wu, Wei-Hua
Format: Article
Language:English
Subjects:
Crop production
Cytoplasm
Embryophyta - metabolism
Ion Transport
Morphology
Physiology
Plant biology
Plant Proteins - metabolism
Plant Roots - metabolism
Plants - metabolism
Potassium
Potassium - metabolism
Potassium Channels - metabolism
Signal Transduction
Stress response
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Summary: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 Ca(2+) 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.
ISSN:1543-5008
1545-2123
DOI:10.1146/annurev-arplant-050312-120153