ArticleProceedings of the National Academy of Sciences of the United States of America2001
KAT1 is not essential for stomatal opening.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
84 citing papers in PubMed, 244 citations in OpenAlex.
- Synthetic ion channel inhibitors enhance plant drought tolerance.Nature communications · 2026Article
- Guard cells on the adaxial and abaxial leaf surfaces use different compositions of potassium ion channels to drive light-induced stomatal opening.Nature plants · 2025Article
- A PIF-SAUR module safeguards hypocotyl elongation from ABA inhibition in the dark.Science advances · 2025Article
- A C4 plant K+ channel accelerates stomata to enhance C3 photosynthesis and water use efficiency.Plant physiology · 2025Article
- Potassium extrusion by plant cells: evolution from an emergency valve to a driver of long-distance transport.The New phytologist · 2025Review
- A CW-type zinc finger protein is involved in RES-oxylipin signaling and the response to abiotic stress inFrontiers in plant science · 2025Article
- Endomembrane trafficking driven by microtubule growth regulates stomatal movement in Arabidopsis.Nature communications · 2024Article
- Identification and Characterization ofInternational journal of molecular sciences · 2024Article
- PIF transcriptional regulators are required for rhythmic stomatal movements.Nature communications · 2024Article
- Living with high potassium: Balance between nutrient acquisition and K-induced salt stress signaling.Plant physiology · 2023Article
- Green Tea Catechins, (-)-Catechin Gallate, and (-)-Gallocatechin Gallate are Potent Inhibitors of ABA-Induced Stomatal Closure.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022Article
- Structural and Functional Insights into the Role of Guard Cell Ion Channels in Abiotic Stress-Induced Stomatal Closure.Plants (Basel, Switzerland) · 2021Review
- Adjustment of KInternational journal of molecular sciences · 2021Review
- Potassium Control of Plant Functions: Ecological and Agricultural Implications.Plants (Basel, Switzerland) · 2021Article
- The Venus flytrap trigger hair-specific potassium channel KDM1 can reestablish the K+ gradient required for hapto-electric signaling.PLoS biology · 2020Article
- CIPK23 regulates blue light-dependent stomatal opening in Arabidopsis thaliana.The Plant journal : for cell and molecular biology · 2020Article
- Calcium-Regulated Phosphorylation Systems Controlling Uptake and Balance of Plant Nutrients.Frontiers in plant science · 2020Review
- Unique features of the grapevine VvK5.1 channel support novel functions for outward K+ channels in plants.Journal of experimental botany · 2019Article
- BCL2-ASSOCIATED ATHANOGENE4 Regulates the KAT1 Potassium Channel and Controls Stomatal Movement.Plant physiology · 2019Article
- The Complex Fine-Tuning of K⁺ Fluxes in Plants in Relation to Osmotic and Ionic Abiotic Stresses.International journal of molecular sciences · 2019Review
24 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
12 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
It is generally accepted that K(+) uptake into guard cells via inward-rectifying K(+) channels is required for stomatal opening. To test whether the guard cell K(+) channel KAT1 is essential for stomatal opening, a knockout mutant, KAT1En-1, was isolated from an En-1 mutagenized Arabidopsis thaliana population. Stomatal action and K(+) uptake, however, were not impaired in KAT1-deficient plants. Reverse transcription-PCR experiments with isolated guard cell protoplasts showed that in addition to KAT1, the K(+) channels AKT1, AKT2/3, AtKC1, and KAT2 were expressed in this cell type. In impalement measurements, intact guard cells exhibited inward-rectifying K(+) currents across the plasma membrane of both wild-type and KAT1En-1 plants. This study demonstrates that multiple K(+) channel transcripts exist in guard cells and that KAT1 is not essential for stomatal action.
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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.