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A Protein Kinase, Interacting with Two Calcineurin B-like Proteins, Regulates K+ Transporter AKT1 in Arabidopsis
Open accessAbstract
Potassium is an essential mineral element for plant growth and development. Although it is known that plants absorb and transport K+ through membrane transporters, it remains unclear how these transporters are regulated. Here we show that the protein kinase CIPK23, encoded by the LKS1 gene, regulates K+ uptake under low-K+ conditions. Lesion of LKS1 significantly reduced K+ uptake and caused leaf chlorosis and growth inhibition, whereas overexpression of LKS1 significantly enhanced K+ uptake and tolerance to low K+. We demonstrate that CIPK23 directly phosphorylates the K+ transporter AKT1 and further find that CIPK23 is activated by the binding of two calcineurin B-like proteins, CBL1 and CBL9. We propose a model in which the CBL1/9-CIPK23 pathway ensures activation of AKT1 and enhanced K+ uptake under low-K+ conditions.
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Hamill, O. P., Marty, A., Neher, E., Sakmann, B., & Sigworth, F. J. (1981) · Pflügers Archiv - European Journal of Physiology · doi:10.1007/bf00656997 · Cited by 18,436
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Dodd, A. N., Kudla, J., & Sanders, D. (2010) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-070109-104628 · Cited by 1,317
CO2 regulator SLAC1 and its homologues are essential for anion homeostasis in plant cells
Negi, J., Matsuda, O., Nagasawa, T., Oba, Y., Takahashi, H., Kawai-Yamada, M., Uchimiya, H., Hashimoto, M., & Iba, K. (2008) · Nature · doi:10.1038/nature06720 · Cited by 632
Potassium and phosphorus transport and signaling in plants
Wang, Y., Chen, Y., & Wu, W. (2021) · Journal of Integrative Plant Biology · doi:10.1111/jipb.13053 · Cited by 431
Self-citationChristou, A., Manganaris, G. A., Papadopoulos, I., & Fotopoulos, V. (2013) · Journal of Experimental Botany · doi:10.1093/jxb/ert055 · Cited by 346
Chen, G., Hu, Q., Luo, L., Yang, T., Zhang, S., Hu, Y., Yu, L., & Xu, G. (2015) · Plant, Cell & Environment · doi:10.1111/pce.12585 · Cited by 293
Metadata
- Authors
- Xu, J., Li, H.-D., Chen, L.-Q., Wang, Y., Liu, L.-L., He, L., & Wu, W.-H.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2006-06
- Volume
- 125
- Issue
- 7
- Pages
- 1347-1360
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2117599191
- Cited by
- 1,022
- References
- 1
- FWCI
- 40.27
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Xu, J., Li, H.-D., Chen, L.-Q., Wang, Y., Liu, L.-L., He, L., & Wu, W.-H. (2006). A Protein Kinase, Interacting with Two Calcineurin B-like Proteins, Regulates K+ Transporter AKT1 in Arabidopsis. Cell. https://doi.org/10.1016/j.cell.2006.06.011
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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