ArticlePlant physiology2002
Sodium fluxes through nonselective cation channels in the plasma membrane of protoplasts from Arabidopsis roots.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 108 papers.
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Who cites it
108 citing papers in PubMed.
- Stoichiometry and Homeostasis of Sodium and Potassium Underpins Growth Adaptation ofEcology and evolution · 2026Article
- Potassium silicate improves cellular sodium homeostasis in wheat (Triticum aestivum L.) cultivars differing in salt resistance.Plant biology (Stuttgart, Germany) · 2026Article
- Are We Chasing a Wild Goose? Rethinking Breeding Targets for Salinity Stress Tolerance in Rice.Plants (Basel, Switzerland) · 2026Article
- MdHMGB15-MdXERICO-MdNRP module mediates salt tolerance of apple by regulating the expression of salt stress-related genes.Journal of advanced research · 2026Article
- Structural Domains Associated with Permeation, Gating, and Selectivity of Aquaporin Ion Channels Found Across Phyla.Advances in experimental medicine and biology · 2026Review
- Arabidopsis IONIC CURRENT FAMILY A proteins facilitate environmental calcium acquisition essential for stress tolerance.Nature plants · 2026Article
- Transparent PEDOT:PSS/PDMS Leaf Tattoos for Multiplexed Plant Health Monitoring and Energy Harvesting.Biosensors · 2025Article
- Salt Tolerance in Soybean (Plants (Basel, Switzerland) · 2025Review
- Lithium in plants.The New phytologist · 2025Review
- Overexpression ofPlants (Basel, Switzerland) · 2025Article
- OsPIP2;4 aquaporin water channel primarily expressed in roots of rice mediates both water and nonselective NaScientific reports · 2025Article
- Heterologous expression of the durum wheat TdHKT1;4-1 partially complements the mutant athkt1 in Arabidopsis thaliana under severe salt stress.Protoplasma · 2025Article
- SOS1 tonoplast neo-localization and the RGG protein SALTY are important in the extreme salinity tolerance of Salicornia bigelovii.Nature communications · 2024Article
- RNA-Seq-Based WGCNA and Association Analysis Reveal the Key Regulatory Module and Genes Responding to Salt Stress in Wheat Roots.Plants (Basel, Switzerland) · 2024Article
- Ion Changes and Signaling under Salt Stress in Wheat and Other Important Crops.Plants (Basel, Switzerland) · 2023Review
- Reactive oxygen species- and nitric oxide-dependent regulation of ion and metal homeostasis in plants.Journal of experimental botany · 2023Article
- Yeast Heterologous Expression Systems for the Study of Plant Membrane Proteins.International journal of molecular sciences · 2023Review
- Transcriptome and Low-Affinity Sodium Transport Analysis Reveals Salt Tolerance Variations between Two Poplar Trees.International journal of molecular sciences · 2023Article
- Unfolding molecular switches for salt stress resilience in soybean: recent advances and prospects for salt-tolerant smart plant production.Frontiers in plant science · 2023Review
- Diversification of threeJournal of genetics · 2023Article
48 more citing papers are in PubMed but not listed here.
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2 authors.
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Abstract
The aim of the present work was to characterize Na(+) currents through nonselective cation channels (NSCCs) in protoplasts derived from root cells of Arabidopsis. The procedure of the protoplast isolation was modified to increase the stability of Arabidopsis root protoplasts in low external Ca(2+) by digesting tissue in elevated Ca(2+). Experiments in whole-cell and outside-out modes were carried out. We found that Na(+) currents in Arabidopsis root protoplasts were mediated by cation channels that were insensitive to externally applied tetraethylammonium(+) and verapamil, had no time-dependent activation (permanently opened or completely activated within 1-2 ms), were voltage independent, and were weakly selective for monovalent cations. The selectivity sequence was as follows: K(+) (1.49) > NH(4)(+) (1.24) > Rb(+) (1.15) approximately equal to Cs(+) (1.10) approximately equal to Na(+) (1.00) > Li(+) (0.73) > tetraethylammonium(+) (0.47). Arabidopsis root NSCCs were blocked by H(+) (pK approximately equal to 6.0), Ca(2+) (K(1/2) approximately equal to 0.1 mM), Ba(2+), Zn(2+), La(3+), Gd(3+), quinine, and the His modifier diethylpyrocarbonate. They were insensitive to most organic blockers (nifedipine, verapamil, flufenamate, and amiloride) and to the SH-group modifier p-chloromercuriphenyl sulfonic acid. Voltage-insensitive, Ca(2+)-sensitive single channels were also resolved. Properties of Arabidopsis root NSCCs are discussed and compared with characteristics of similar conductances studied previously in plants and animals. It is suggested that NSCCs present a distinct group of plant ion channels, mediating toxic Na(+) influx to the cell and probably having other important roles in physiological processes of plants.
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