ArticleProceedings of the National Academy of Sciences of the United States of America2002
AtKC1, a silent Arabidopsis potassium channel alpha -subunit modulates root hair K+ influx.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.
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Who cites it
69 citing papers in PubMed, 217 citations in OpenAlex.
- AKT5 is a bona fide potassium channel and controls petiole growth inScience advances · 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
- The Potassium Utilization Gene Network inInternational journal of molecular sciences · 2025Article
- Genome-wide identification of kiwifruit KBMC plant biology · 2024Article
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- Comparative Transcriptome Analysis Reveals the Genes and Pathways Related to Wheat Root Hair Length.International journal of molecular sciences · 2024Article
- Identification ofLife (Basel, Switzerland) · 2023Article
- The Sweetpotato Voltage-Gated KGenes · 2022Article
- Mind the context: K+ channel subunit AtKC1 tunes local osmotic environment to adjust stomatal movement.The Plant cell · 2022Article
- Non-autonomous stomatal control by pavement cell turgor via the K+ channel subunit AtKC1.The Plant cell · 2022Article
- Comparative transcriptome analysis between inbred lines and hybrids provides molecular insights into KFrontiers in plant science · 2022Article
- In-depth assembly of organ and development dissected Picrorhiza kurroa proteome map using mass spectrometry.BMC plant biology · 2021Article
- Genome-Wide Identification and Expression Profiling of Potassium Transport-Related Genes inPlants (Basel, Switzerland) · 2021Article
- Genome-Wide Identification, Genomic Organization, and Characterization of Potassium Transport-Related Genes inPlants (Basel, Switzerland) · 2021Article
- Recent Advances in Genome-wide Analyses of Plant Potassium Transporter Families.Current genomics · 2021Review
- Potential Networks of Nitrogen-Phosphorus-Potassium Channels and Transporters in Arabidopsis Roots at a Single Cell Resolution.Frontiers in plant science · 2021Article
- Close Temporal Relationship between Oscillating Cytosolic KInternational journal of molecular sciences · 2020Article
- Multiple High-Affinity KPlants (Basel, Switzerland) · 2020Article
- Identification of Shaker KPlanta · 2019Article
- Potassium in Root Growth and Development.Plants (Basel, Switzerland) · 2019Review
9 more citing papers are in PubMed but not listed here.
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ion channels in roots allow the plant to gain access to nutrients. The composition of the individual ion channels and the functional contribution of different alpha-subunits is largely unknown. Focusing on K(+)-selective ion channels, we have characterized AtKC1, a new alpha-subunit from the Arabidopsis shaker-like ion channel family. Promoter-beta-glucuronidase (GUS) studies identified AtKC1 expression predominantly in root hairs and root endodermis. Specific antibodies recognized AtKC1 at the plasma membrane. To analyze further the abundance and the functional contribution of the different K(+) channels alpha-subunits in root cells, we performed real-time reverse transcription-PCR and patch-clamp experiments on isolated root hair protoplasts. Studying all shaker-like ion channel alpha-subunits, we only found the K(+) inward rectifier AtKC1 and AKT1 and the K(+) outward rectifier GORK to be expressed in this cell type. Akt1 knockout plants essentially lacked inward rectifying K(+) currents. In contrast, inward rectifying K(+) currents were present in AtKC1 knockout plants, but fundamentally altered with respect to gating and cation sensitivity. This indicates that the AtKC1 alpha-subunit represents an integral component of functional root hair K(+) uptake channels.
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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.