ArticlePlant physiology1994
Ion Channels in the Xylem Parenchyma of Barley Roots (A Procedure to Isolate Protoplasts from This Tissue and a Patch-Clamp Exploration of Salt Passageways into Xylem Vessels.
Article in Plant physiology, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
What it found
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Who cites it
44 citing papers in PubMed, 224 citations in OpenAlex.
- 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
- Potassium extrusion by plant cells: evolution from an emergency valve to a driver of long-distance transport.The New phytologist · 2025Review
- Chloride transport and homeostasis in plants.Quantitative plant biology · 2025Review
- Potassium homeostasis and signalling: from the whole plant to the subcellular level.Quantitative plant biology · 2025Review
- Ion Changes and Signaling under Salt Stress in Wheat and Other Important Crops.Plants (Basel, Switzerland) · 2023Review
- Nitrate Uptake and Use Efficiency: Pros and Cons of Chloride Interference in the Vegetable Crops.Frontiers in plant science · 2022Review
- Article
- The Dynamics of Radio-Cesium in Soils and Mechanism of Cesium Uptake Into Higher Plants: Newly Elucidated Mechanism of Cesium Uptake Into Rice Plants.Frontiers in plant science · 2020Review
- The Effect of AtHKT1;1 or AtSOS1 Mutation on the Expressions of Na⁺ or K⁺ Transporter Genes and Ion Homeostasis inInternational journal of molecular sciences · 2019Article
- Exogenous Pi supplementation improved the salt tolerance of maize (Zea mays L.) by promoting NaScientific reports · 2018Article
- A General Model of Ion Passive Transmembrane Transport Based on Ionic Concentration.Frontiers in computational neuroscience · 2018Article
- Tissue-specific root ion profiling reveals essential roles of the CAX and ACA calcium transport systems in response to hypoxia in Arabidopsis.Journal of experimental botany · 2016Article
- ZxNHX controls Na⁺ and K⁺ homeostasis at the whole-plant level in Zygophyllum xanthoxylum through feedback regulation of the expression of genes involved in their transport.Annals of botany · 2015Article
- Learning from halophytes: physiological basis and strategies to improve abiotic stress tolerance in crops.Annals of botany · 2013Review
- Salinity tolerance mechanisms in glycophytes: An overview with the central focus on rice plants.Rice (New York, N.Y.) · 2012Article
- Comparative effects of deficit irrigation and alternate partial root-zone irrigation on xylem pH, ABA and ionic concentrations in tomatoes.Journal of experimental botany · 2012Article
- AtHKT1;1 mediates nernstian sodium channel transport properties in Arabidopsis root stelar cells.PloS one · 2011Article
- Comparative physiology of elemental distributions in plants.Annals of botany · 2010Review
- HKT transporter-mediated salinity resistance mechanisms in Arabidopsis and monocot crop plants.Trends in plant science · 2009Review
- Na-K transport in roots under salt stress.Plant signaling & behavior · 2008Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To identify mechanisms for the simultaneous release of anions and cations into the xylem sap in roots, we investigated voltage-dependent ion conductances in the plasmalemma of xylem parenchyma cells. We applied the patch-clamp technique to protoplasts isolated from the xylem parenchyma by differential enzymic digestion of steles of barley roots (Hordeum vulgare L. cv Apex). In the whole-cell configuration, three types of cation-selective rectifiers could be identified: (a) one activated at membrane potentials above about -50 mV; (b) a second type of outward current appeared at membrane potentials above +20 to +40 mV; (c) below a membrane potential of approximately -110 mV, an inward rectifier could be distinguished. In addition, an anion-specific conductance manifested itself in single-channel activity in a voltage range extending from about -100 to +30 mV, with remarkably slow gating. In excised patches, K+ channels activated at hyperpolarization as well as at depolarization. We suggest that salt is released from the xylem parenchyma into the xylem apoplast by simultaneous flow of cations and anions through channels, following electrochemical gradients set up by the ion uptake processes in the cortex and, possibly, the release and reabsorption of ions on their way to the xylem.
Identifiers
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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.