Regulation of K+ nutrition in plants
Modern agriculture relies on mineral fertilization. Unlike other major macronutrients, potassium (K+) is not incorporated into organic matter but remains as soluble ion in the cell sap contributing up to 10% of the dry organic matter. Consequently, K+ constitutes a chief osmoticum to drive cellular...
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 March 2019
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| In: |
Frontiers in plant science
Year: 2019, Volume: 10 |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2019.00281 |
| Online Access: | Verlag, Volltext: https://doi.org/10.3389/fpls.2019.00281 Verlag, Volltext: https://www.frontiersin.org/articles/10.3389/fpls.2019.00281/full 
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| Author Notes: | Paula Ragel, Natalia Raddatz, Eduardo O. Leidi, Francisco J. Quintero and José M. Pardo |
| Summary: | Modern agriculture relies on mineral fertilization. Unlike other major macronutrients, potassium (K+) is not incorporated into organic matter but remains as soluble ion in the cell sap contributing up to 10% of the dry organic matter. Consequently, K+ constitutes a chief osmoticum to drive cellular expansion and organ movements, such as stomata aperture. Moreover, K+ transport is critical for the control of cytoplasmic and luminal pH in endosomes, regulation of membrane potential, and enzyme activity. Not surprisingly, plants have evolved a large ensemble of K+ transporters with defined functions in nutrient uptake by roots, storage in vacuoles, and ion translocation between tissues and organs. This review describes critical transport proteins governing K+ nutrition, their regulation and coordinated activity, and summarizes our current understanding of signaling pathways activated by K+ starvation. |
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| Item Description: | Gesehen am 11.06.2019 "+" hinter K ist hochgestellt |
| Physical Description: | Online Resource |
| ISSN: | 1664-462X |
| DOI: | 10.3389/fpls.2019.00281 |