ArticlePlant physiology1992
Ion channels in Arabidopsis plasma membrane : transport characteristics and involvement in light-induced voltage changes.
Article in Plant physiology, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
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Who cites it
32 citing papers in PubMed.
- Plant Behaviour, Adaptive Plasticity and Evolution: Reassessing the Debate on Plant Intelligence.Biology · 2026Review
- A charged existence: A century of transmembrane ion transport in plants.Plant physiology · 2024Review
- Electrical Signaling of Plants under Abiotic Stressors: Transmission of Stimulus-Specific Information.International journal of molecular sciences · 2021Review
- The role of PQL genes in response to salinity tolerance inPlant direct · 2021Article
- Molecular Evolution and Interaction of Membrane Transport and Photoreception in Plants.Frontiers in genetics · 2019Review
- Extracellular Ca2+ ameliorates NaCl-induced K+ loss from Arabidopsis root and leaf cells by controlling plasma membrane K+ -permeable channels.Plant physiology · 2006Article
- Shade-Induced Action Potentials in Helianthus annuus L. Originate Primarily from the Epicotyl.Plant signaling & behavior · 2006Article
- TPK1 is a vacuolar ion channel different from the slow-vacuolar cation channel.Plant physiology · 2005Article
- Article
- Regulation of potassium transport in leaves: from molecular to tissue level.Annals of botany · 2003Review
- Differences in whole-cell and single-channel ion currents across the plasma membrane of mesophyll cells from two closely related Thlaspi species.Plant physiology · 2003Article
- Functions of AKT1 and AKT2 potassium channels determined by studies of single and double mutants of Arabidopsis.Plant physiology · 2001Article
- Blue light activates potassium-efflux channels in flexor cells from Samanea saman motor organs via two mechanisms.Plant physiology · 2000Article
- A shaker-like K(+) channel with weak rectification is expressed in both source and sink phloem tissues of Arabidopsis.The Plant cell · 2000Article
- Article
- A transient outward-rectifying K+ channel current down-regulated by cytosolic Ca2+ in Arabidopsis thaliana guard cells.Proceedings of the National Academy of Sciences of the United States of America · 1998Article
- Expression of a Cs(+)-resistant guard cell K+ channel confers Cs(+)-resistant, light-induced stomatal opening in transgenic arabidopsis.The Plant cell · 1997Article
- Ca(2+)-activated anion channels and membrane depolarizations induced by blue light and cold in Arabidopsis seedlings.Plant physiology · 1997Article
- Roles of higher plant K+ channels.Plant physiology · 1997Review
- Characterization of a Light-Controlled Anion Channel in the Plasma Membrane of Mesophyll Cells of Pea.Plant physiology · 1997Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
White light (25 watts per square meter) induced an increase in plasma membrane K(+)-channel activity and a 30- to 70-millivolt transient membrane depolarization (completed in 2-3 minutes) in Arabidopsis thaliana leaf mesophyll cells. Transport characteristics of three types of ion channels in the plasma membrane were determined using inside-out patches. With 220 millimolar K(+) on the cytoplasmic side of the patch and 50 millimolar K(+) in the pipette, (220/50 K), the open-channel current-voltage curves of these channels were sigmoidal and consistent with an enzyme kinetic model. Two channel types were selective for K(+) over Na(+) and Cl(-). One (named PKC1) had a maximum conductance (G(max)) of 44 picosiemens at a membrane voltage (V(m)) of -65 mV in (220/50 K) and is stimulated by light. The other (PKC2) had G(max) = 66 picosiemens at V(m) = 60 millivolts in (220/50 K). The third channel type (PCC1) transported K(+) and Na(+) about equally well but not Cl(-). It had G(max) = 109 picosiemens at V(m) = 55 millivolts in (250/50 K) with 10 millimolar Ca(2+) on the cytoplasmic side. Reducing Ca(2+) to 0.1 millimolar increased PCC1 open-channel currents by approximately 50% in a voltage-independent manner. Averaged over time, PKC2 and PCC1 currents strongly outward rectified and PKC1 currents did so weakly. Reductants (1 millimolar dithiothreitol or 10 millimolar beta-mercaptoethanol) added to the cytoplasmic side of an excised patch increased the open probability of all three channel types.
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