Voltage transients elicited by brief chilling.
Chilling auxin-depleted, etiolated stems of Pisum sativum L. to 4 degrees C for 60 s enhanced the production of previously described voltage transients 20-fold. It is postulated that plasmalemmal permeability to Ca2+ is increased at low temperature, permitting influx of the ion from the apoplast to the cytosol and thereby promoting production of transients. Heating to 40 degrees C or 45 degrees C elicits no increase in transients, and heating to 50 degrees C leads to loss of turgor.
Pickard
B G
BG
Biology Department, Washington University, St Louis, Missouri 63130, USA.
D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D003080:Cold Temperature; D003600:Cytosol / Q000378:metabolism; D004594:Electrophysiology; D018532:Pisum sativum / Q000378:metabolism / Q000502:physiology*; D018547:Plant Stems / Q000378:metabolism / Q000502:physiology; D013997:Time Factors
D002118:Calcium