Claim · model-written summary
Low external K+ accelerated IK,out activation.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Compound
- external K+e0
- Outcome
- activation kinetics of IK,oute0
- Direction
- fastere0
- Qualifier
- low external K+e0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activation kinetics of IK,out were modulated by the external K+ concentration with a faster activation at low external K+.”
e1“Arabidopsis thaliana”
Title
Ca2+-Permeable, Outwardly-Rectifying K+ Channels in Mesophyll Cells of Arabidopsis taliana
L. A. Romano; H. Miedema; S. M. Assmann Plant and Cell Physiology 1998. doi:10.1093/oxfordjournals.pcp.a029314
Other claims from this paper (8)
- Observation The dominant mesophyll conductance was a selective voltage dependent outward K channel.
- Observation IK,out occurred in all assayed cells.
- Observation Inward current appeared in fewer than half of cells at 100 mM K+.
- Observation Inward current was absent at 10 mM K+.
- Observation IK,out was permeable to Ca2+ and Ba2+ in addition to K+.
- Intervention effect External Ba2+ caused a voltage dependent reduction in IK,out current.
- Observation Outside out single channels resembled whole cell IK,out in Ca2+/Ba2+ sensitivity, voltage dependence and activation time.
- Mechanism The channels may mediate Ca2+ influx and K+ efflux, with possible effects on photosynthesis.