ArticlePlant physiology1991
Inward Rectifying K Channels in the Plasma Membrane of Arabidopsis thaliana.
Article in Plant physiology, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- A charged existence: A century of transmembrane ion transport in plants.Plant physiology · 2024Review
- At-ACA8 encodes a plasma membrane-localized calcium-ATPase of Arabidopsis with a calmodulin-binding domain at the N terminus.Plant physiology · 2000Article
- K+-Selective inward-rectifying channels and apoplastic pH in barley rootsPlant physiology · 1999Article
- Kinetic analysis of two simultaneously activated K+ currents in root cell protoplasts of Plantago media L.The Journal of membrane biology · 1995Article
- Use of Saccharomyces cerevisiae for patch-clamp analysis of heterologous membrane proteins: characterization of Kat1, an inward-rectifying K+ channel from Arabidopsis thaliana, and comparison with endogeneous yeast channels and carriers.Proceedings of the National Academy of Sciences of the United States of America · 1995Article
- Inward rectifier potassium channels in plants differ from their animal counterparts in response to voltage and channel modulators.European biophysics journal : EBJ · 1995Article
- Contrasting roles in ion transport of two K(+)-channel types in root cells of Arabidopsis thaliana.Planta · 1995Article
- Properties of the K+ inward rectifier in the plasma membrane of xylem parenchyma cells from barley roots: effects of TEA+, Ca2+, Ba2+ and La3+.The Journal of membrane biology · 1994Article
- Pump and K+ inward rectifiers in the plasmalemma of wheat root protoplasts.The Journal of membrane biology · 1994Article
- Hodgkin-Huxley analysis of whole-cell outward rectifying K(+)-currents in protoplasts from tobacco cell suspension cultures.The Journal of membrane biology · 1993Article
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Authors and funding
2 authors.
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Abstract
Ion channels in the plasma membrane of protoplasts isolated from cultured cells of Arabidopsis thaliana were studied by means of the patch-clamp technique applied in the whole-cell configuration. In some protoplasts, depolarizing pulses and, in other protoplasts, hyperpolarizing pulses elicited time-dependent currents; both kinds of current were only rarely observed in the same protoplast. The hyperpolarization-activated inward rectifying currents, the focus of this paper, appeared to be due to the relatively slow opening of channels (activation time constant = 150 to 300 milliseconds), which closed at positive potentials. The reversal potential of this current, measured in the presence of different ion concentrations (symmetrical or asymmetrical K(+) and Cl(-) or gluconate), was always close to the electrochemical equilibrium potential of K(+). The currents were inhibited by 10 millimolar tetraethylammonium, a K(+) channel blocker. These data show that the hyperpolarization-activated currents flow through K(+) channels, which can provide a pathway for the passive diffusion of K(+) down its electrochemical gradient.
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