ArticlePloS one2013
Unique features of two potassium channels, OsKAT2 and OsKAT3, expressed in rice guard cells.
Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 34 citations in OpenAlex.
- Expansion and Functional Divergence of Shaker KInternational journal of molecular sciences · 2026Article
- Rolling Leaf 2 Controls Leaf Rolling by Regulating Adaxial-Side Bulliform Cell Number and Size in Rice.Plants (Basel, Switzerland) · 2025Article
- Review
- The Molecular Mechanism of Potassium Absorption, Transport, and Utilization in Rice.International journal of molecular sciences · 2023Review
- Nitrate-responsive OsMADS27 promotes salt tolerance in rice.Plant communications · 2023Article
- Identification and Characterization of Shaker KFrontiers in plant science · 2022Article
- Recent Advances in Genome-wide Analyses of Plant Potassium Transporter Families.Current genomics · 2021Review
- Two Clade A Phosphatase 2Cs Expressed in Guard Cells Physically Interact With Abscisic Acid Signaling Components to Induce Stomatal Closure in Rice.Rice (New York, N.Y.) · 2019Article
- Review
- Gene Expression Patterns in Roots ofFrontiers in microbiology · 2018Article
- A Dominant Negative OsKAT2 Mutant Delays Light-Induced Stomatal Opening and Improves Drought Tolerance without Yield Penalty in Rice.Frontiers in plant science · 2017Article
- Oryza sativa H+-ATPase (OSA) is Involved in the Regulation of Dumbbell-Shaped Guard Cells of Rice.Plant & cell physiology · 2016Article
- Strategies for improving potassium use efficiency in plants.Molecules and cells · 2014Review
- OsKAT2 is the prevailing functional inward rectifier potassium channels in rice guard cell.Plant signaling & behavior · 2013Article
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Authors and funding
11 authors at 6 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Potassium is the most abundant cation and a myriad of transporters regulate K(+) homeostasis in plant. Potassium plays a role as a major osmolyte to regulate stomatal movements that control water utility of land plants. Here we report the characterization of two inward rectifying shaker-like potassium channels, OsKAT2 and OsKAT3, expressed in guard cell of rice plants. While OsKAT2 showed typical potassium channel activity, like that of Arabidopsis KAT1, OsKAT3 did not despite high sequence similarity between the two channel proteins. Interestingly, the two potassium channels physically interacted with each other and such interaction negatively regulated the OsKAT2 channel activity in CHO cell system. Furthermore, deletion of the C-terminal domain recovered the channel activity of OsKAT3, suggesting that the C-terminal region was regulatory domain that inhibited channel activity. Two homologous channels with antagonistic interaction has not been previously reported and presents new information for potassium channel regulation in plants, especially in stomatal regulation.
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