-
Views
-
Cite
Cite
Yoshiyuki Murata, Manabu Yoshihashi, Ichiro Obi, Tadaaki Kakutani, Ca2+ Regulation of Outward Rectifying K+ Channel in the Plasma Membrane of Tobacco Cultured Cells in Suspension: a Role of the K +Channel in Mitigation of Salt-Stress Effects by External Ca2+, Plant and Cell Physiology, Volume 39, Issue 10, October 1998, Pages 1039–1044, https://doi.org/10.1093/oxfordjournals.pcp.a029300
- Share Icon Share
Abstract
The patch-clamp technique was used to study effect of the Ca2+ on K+ channels in the plasma membrane of protoplasts isolated from tobacco (Nicotiana tabacum L., cv. Bright Yellow) cultured cells in suspension. The outward rectifying whole-cell K+ currents were not affected by in-tracellular Ca2+, but they were reduced with increasing extracellular Ca2+. Neither extracellular nor intracellular Ca2+ affected the permeability ratios (pK+/PNa+) of the plasma membrane. These results suggest that the inhibition of outward-rectifying K+ channels by extracellular Ca2+may partially contribute towards the mitigation of detrimental effects of salinity on growth by extracellular Ca2+.