ArticleThe Journal of membrane biology1993
Hodgkin-Huxley analysis of whole-cell outward rectifying K(+)-currents in protoplasts from tobacco cell suspension cultures.
Article in The Journal of membrane biology, 1993. 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, 31 citations in OpenAlex.
- Illumination/Darkness-Induced Changes in Leaf Surface Potential Linked With Kinetics of Ion Fluxes.Frontiers in plant science · 2019Article
- Model selection and parameter estimation for ion channel recordings with an application to the K+ outward-rectifier in barley leaf.Journal of mathematical biology · 2005Article
- Characterization of whole-cell K+ currents across the plasma membrane of pollen grain and tube protoplasts of Lilium longiflorum.The Journal of membrane biology · 2003Article
- 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
- Hodgkin-Huxley analysis of a GCAC1 anion channel in the plasma membrane of guard cells.The Journal of membrane biology · 1995Article
- Kinetic analysis of two simultaneously activated K+ currents in root cell protoplasts of Plantago media L.The Journal of membrane biology · 1995Article
- Ion channels in the plasma membrane of protoplasts from the halophytic angiosperm Zostera muelleri.The Journal of membrane biology · 1994Article
- External pH effects on the depolarization-activated K channels in guard cell protoplasts of Vicia faba.The Journal of general physiology · 1994Article
- Pump and K+ inward rectifiers in the plasmalemma of wheat root protoplasts.The Journal of membrane biology · 1994Article
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1 author.
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Abstract
The voltage and time dependence of outward-rectifying K+ currents (IK,out) measured in protoplasts from tobacco cell suspension cultures in the whole-cell configuration of the patch-clamp technique are quantitatively analyzed. The voltage and time dependence was described according to the Hodgkin and Huxley model for IK,out currents in the squid giant axon, and to allow comparison, in analogy with the quantitative analysis of IK,out currents in Vicia faba guard cell protoplasts as described by Schroeder (J. Membrane Biol., 107:229-235, 1989). The IK,out from tobacco could be described by a similar model as the IK,out from guard cell protoplasts (i.e., sigmoid activation time course, activation variable raised to second power, single exponential deactivating tail currents, absence of inactivation). However, in contrast to guard cells, both the activation and deactivation time constants were strongly voltage dependent in tobacco protoplasts. The voltage dependence of the transition rates for channel opening and channel closing was slightly asymmetrical and inverse to the asymmetry found in guard cells. The data presented show that the voltage-dependent kinetic properties of the IK,out conductance of tobacco protoplasts are different from these properties in guard cell protoplasts. This analysis provides a basis for the study of IK,out conductance function and modulation.
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