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Reference Detail
| Reference | ||
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| Author | Li J., Long Y., Qi G.N., Li J., Xu Z.J., Wu W.H., Wang Y. | |
| Title | The Os-AKT1 Channel Is Critical for K+ Uptake in Rice Roots and Is Modulated by the Rice CBL1-CIPK23 Complex. | |
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Abstract: Potassium (K(+)) is one of the essential nutrient elements for plant growth and development. Plants absorb K(+) ions from the environment via root cell K(+) channels and/or transporters. In this study, the Shaker K(+) channel Os-AKT1 was characterized for its function in K(+) uptake in rice (Oryza sativa) roots, and its regulation by Os-CBL1 (Calcineurin B-Like protein1) and Os-CIPK23 (CBL-Interacting Protein Kinase23) was investigated. As an inward K(+) channel, Os-AKT1 could carry out K(+) uptake and rescue the low-K(+)-sensitive phenotype of Arabidopsis thaliana AKT1 mutant plants. Rice Os-AKT1 mutant plants showed decreased K(+) uptake and displayed an obvious low-K(+)-sensitive phenotype. Disruption of Os-AKT1 significantly reduced the K(+) content, which resulted in inhibition of plant growth and development. Similar to the AKT1 regulation in Arabidopsis, Os-CBL1 and Os-CIPK23 were identified as the upstream regulators of Os-AKT1 in rice. The Os-CBL1-Os-CIPK23 complex could enhance Os-AKT1-mediated K(+) uptake. A phenotype test confirmed that Os-CIPK23 RNAi lines exhibited similar K(+)-deficient symptoms as the Os-AKT1 mutant under low K(+) conditions. These findings demonstrate that Os-AKT1-mediated K(+) uptake in rice roots is modulated by the Os-CBL1-Os-CIPK23 complex. |
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| Journal | Plant Cell | |
| Country | China | |
| Volume | 26(8) | |
| Pages | 3387-402 | |
| Year | 2014 | |
| PubMed ID | 25096783 | |
| PubMed Central ID | 4176441 | |
| DOI | 10.1105/tpc.114.123455 | |
| URL | - | |
| Relation | ||
| Gene | AKT1 CBL1 CIPK23 CK1 PK4 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
