ArticleJournal of experimental botany2020
Arabidopsis K+ transporter HAK5-mediated high-affinity root K+ uptake is regulated by protein kinases CIPK1 and CIPK9.
Article in Journal of experimental botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 79 citations in OpenAlex.
- Suppressing radiocesium uptake and root-to-shoot translocation in crops: Molecular, agronomic, and ecological strategies.Environmental geochemistry and health · 2026Review
- Identification of the HAK/KUP/KT Potassium Transporter Gene Family in Sweet Potato and Functional Characterization of IbHAK5A.Plants (Basel, Switzerland) · 2026Article
- Potassium Deficiency and Hormone Signalling in Plants.Plant, cell & environment · 2026Review
- Molecular mechanisms and evolutionary adaptations of transporters for photosynthates and specialized metabolites in plants.Plant cell reports · 2026Review
- Transcriptome and weighted gene co-enrichment analysis revealed modules and candidate genes associated with barley response to low potassium stress.Frontiers in plant science · 2026Article
- Vacuolar K⁺ efflux transporter TaTPK1-5D confers low-K⁺ tolerance of 'Zhengmai 136' through interaction with TaCIPK23-4D in bread wheat.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Achromobacter sp. FB-14 mediated morpho-physio-biochemical and molecular improvements in cotton subjected to salt stress.BMC plant biology · 2025Article
- GmAKT1-mediated KPlant biotechnology journal · 2025Article
- The Potassium Utilization Gene Network inInternational journal of molecular sciences · 2025Article
- TaSnRK3.23B, a CBL-interacting protein kinase of wheat, confers drought stress tolerance by promoting ROS scavenging in Arabidopsis.BMC plant biology · 2025Article
- Article
- The 14-3-3 protein nt GF14e interacts with CIPK2 and increases low potassium stress in tobacco.Plant signaling & behavior · 2024Article
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- Arabidopsis transcriptomic analysis reveals cesium inhibition of root growth involves abscisic acid signaling.Planta · 2024Article
- TORC pathway intersects with a calcium sensor kinase network to regulate potassium sensing inProceedings of the National Academy of Sciences of the United States of America · 2023Article
- Calcium signaling in plant mineral nutrition: From uptake to transport.Plant communications · 2023Review
- The CBL1/9-CIPK1 calcium sensor negatively regulates drought stress by phosphorylating the PYLs ABA receptor.Nature communications · 2023Article
- Calcium signaling-mediated transcriptional reprogramming during abiotic stress response in plants.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Review
- Loss-of-Function ofPlants (Basel, Switzerland) · 2023Article
- Potassium nutrient status drives posttranslational regulation of a low-K response network in Arabidopsis.Nature communications · 2023Article
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Authors and funding
8 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The high-affinity K+ transporter HAK5 is the major contributor to root K+ uptake from dilute solutions in K+-starved Arabidopsis plants. Its functionality is tightly regulated and its activity is enhanced under K+ starvation by the transcriptional induction of the AtHAK5 gene, and by the activation of the transporter via the AtCBL1-AtCIPK23 complex. In the present study, the 26 members of the Arabidopsis CIPK protein kinase family were screened in yeast for their capacity to activate HAK5-mediated K+ uptake. Among them, AtCIPK1 was the most efficient activator of AtHAK5. In addition, AtCIPK9, previously reported to participate in K+ homeostasis, also activated the transporter. In roots, the genes encoding AtCIPK1 and AtCIPK9 were induced by K+ deprivation and atcipk1 and atcipk9 Arabidopsis KO mutants showed a reduced AtHAK5-mediated Rb+ uptake. Activation of AtHAK5 by AtCIPK1 did not occur under hyperosmotic stress conditions, where AtCIPK1 function has been shown to be required to maintain plant growth. Taken together, our data contribute to the identification of the complex regulatory networks that control the high-affinity K+ transporter AtHAK5 and root K+ uptake.
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