ArticlePlant physiology1995
Multiple genes, tissue specificity, and expression-dependent modulationcontribute to the functional diversity of potassium channels in Arabidopsis thaliana.
Article in Plant physiology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.
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Who cites it
49 citing papers in PubMed, 142 citations in OpenAlex.
- Research Progress on Plant Shaker KPlants (Basel, Switzerland) · 2024Review
- Identification and Characterization of Shaker KFrontiers in plant science · 2022Article
- HvAKT2 and HvHAK1 confer drought tolerance in barley through enhanced leaf mesophyll HPlant biotechnology journal · 2020Article
- Review
- The malate-activated ALMT12 anion channel in the grassThe Journal of biological chemistry · 2019Article
- Review
- Identification of regions responsible for the function of the plant KChannels (Austin, Tex.) · 2017Article
- Impaired Malate and Fumarate Accumulation Due to the Mutation of the Tonoplast Dicarboxylate Transporter Has Little Effects on Stomatal Behavior.Plant physiology · 2017Article
- 2,4-D attenuates salinity-induced toxicity by mediating anatomical changes, antioxidant capacity and cation transporters in the roots of rice cultivars.Scientific reports · 2017Article
- Arbuscular Mycorrhizal FungusFrontiers in plant science · 2017Article
- The AKT2 potassium channel mediates NaCl induced depolarization in the root of Arabidopsis thaliana.Plant signaling & behavior · 2016Article
- Enhanced Photosynthesis and Growth in atquac1 Knockout Mutants Are Due to Altered Organic Acid Accumulation and an Increase in Both Stomatal and Mesophyll Conductance.Plant physiology · 2016Article
- Mutations in the SLAC1 anion channel slow stomatal opening and severely reduce K+ uptake channel activity via enhanced cytosolic [Ca2+] and increased Ca2+ sensitivity of K+ uptake channels.The New phytologist · 2013Article
- Competition between uptake of ammonium and potassium in barley and Arabidopsis roots: molecular mechanisms and physiological consequences.Journal of experimental botany · 2010Article
- Heteromerization of Arabidopsis Kv channel alpha-subunits: Data and prospects.Plant signaling & behavior · 2008Article
- Rice shaker potassium channel OsKAT1 confers tolerance to salinity stress on yeast and rice cells.Plant physiology · 2007Article
- In planta AKT2 subunits constitute a pH- and Ca2+-sensitive inward rectifying K+ channel.Planta · 2007Article
- Article
- Properties of shaker-type potassium channels in higher plants.The Journal of membrane biology · 2006Review
- A unique voltage sensor sensitizes the potassium channel AKT2 to phosphoregulation.The Journal of general physiology · 2005Article
Corrections and comments
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
Abstract
K+ channels play diverse roles in mediating K+ transport and in modulating the membrane potential in higher plant cells during growth and development. Some of the diversity in K+ channel functions may arise from the regulated expression of multiple genes encoding different K+ channel polypeptides. Here we report the isolation of a novel Arabidopsis thaliana cDNA (AKT2) that is highly homologous to the two previously identified K+ channel genes, KAT1 and AKT1. This cDNA mapped to the center of chromosome 4 by restriction fragment length polymorphism analysis and was highly expressed in leaves, whereas AKT1 was mainly expressed in roots. In addition, we show that diversity in K+ channel function may be attributable to differences in expression levels. Increasing KAT1 expression in Xenopus oocytes by polyadenylation of the KAT1 mRNA increased the current amplitude and led to higher levels of KAT1 protein, as assayed in western blots. The increase in KAT1 expression in oocytes produced shifts in the threshold potential for activation to more positive membrane potentials and decreased half-activation times. These results suggest that different levels of expression and tissue-specific expression of different K+ channel isoforms can contribute to the functional diversity of plant K+ channels. The identification of a highly expressed, leaf-specific K+ channel homolog in plants should allow further molecular characterization of K+ channel functions for physiological K+ transport processes in leaves.
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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.