ArticleProceedings of the National Academy of Sciences of the United States of America1999
AKT3, a phloem-localized K+ channel, is blocked by protons.
Article in Proceedings of the National Academy of Sciences of the United States of America, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.
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Who cites it
64 citing papers in PubMed, 188 citations in OpenAlex.
- AKT5 is a bona fide potassium channel and controls petiole growth inScience advances · 2026Article
- OsKAT1 is a short Shaker potassium channel involved in root-to-shoot potassium translocation and contributes to rice grain yield.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Engineering vascular potassium transport increases yield and drought resilience of cassava.Nature plants · 2025Article
- Shaker KTransgenic research · 2025Article
- Potassium extrusion by plant cells: evolution from an emergency valve to a driver of long-distance transport.The New phytologist · 2025Review
- Identification of Shaker Potassium Channel Family Members and Functional Characterization ofInternational journal of molecular sciences · 2024Article
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- Identification ofLife (Basel, Switzerland) · 2023Article
- The Surprising Dynamics of Electrochemical Coupling at Membrane Sandwiches in Plants.Plants (Basel, Switzerland) · 2023Article
- Recent Advances in Genome-wide Analyses of Plant Potassium Transporter Families.Current genomics · 2021Review
- Genome-Wide Analysis ofGenes · 2021Article
- Potassium Control of Plant Functions: Ecological and Agricultural Implications.Plants (Basel, Switzerland) · 2021Article
- Potential Networks of Nitrogen-Phosphorus-Potassium Channels and Transporters in Arabidopsis Roots at a Single Cell Resolution.Frontiers in plant science · 2021Article
- Grapevine Potassium Nutrition and Fruit Quality in the Context of Climate Change.Frontiers in plant science · 2020Review
- The Complex Fine-Tuning of K⁺ Fluxes in Plants in Relation to Osmotic and Ionic Abiotic Stresses.International journal of molecular sciences · 2019Review
- Lateral Transport of Organic and Inorganic Solutes.Plants (Basel, Switzerland) · 2019Review
- Plant Salinity Stress: Many Unanswered Questions Remain.Frontiers in plant science · 2019Review
- Plant Calcium Signaling in Response to Potassium Deficiency.International journal of molecular sciences · 2018Review
- Identification of Two Auxin-Regulated Potassium Transporters Involved in Seed Maturation.International journal of molecular sciences · 2018Article
- Spore associated bacteria regulates maize root KBMC plant biology · 2018Article
4 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
The potassium-channel gene, AKT3, has recently been isolated from an Arabidopsis thaliana cDNA library. By using the whole-mount and in situ hybridization techniques, we found AKT3 predominantly expressed in the phloem. To study the physiological role of this channel type, AKT3 was heterologously expressed in Xenopus oocytes, and the electrical properties were examined with voltage-clamp techniques. Unlike the plant inward-rectifying guard cell K+ channels KAT1 and KST1, the AKT3 channels were only weakly regulated by the membrane potential. Furthermore, AKT3 was blocked by physiological concentrations of external Ca2+ and showed an inverted pH regulation. Extracellular acidification decreased the macroscopic AKT3 currents by reducing the single-channel conductance. Because assimilate transport in the vascular tissue coincides with both H+ and K+ fluxes, AKT3 K+ channels may be involved in K+ transport accompanying phloem loading and unloading processes.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.