Wirkung von K+auf die Fluxe und den Transport von Na+in Gerstenwurzeln, K+-stimulierter Na+-Efflux in der Wurzelrinde

摘要

Barley roots grown on a nutrient solution containing 1 mM Na+but no K+are capable of a considerable Na+transport via the symplasm of the root and the xylem vessels. K+added to the medium surrounding the root cortex severely inhibits this transport after a lag period at a high rate constant (Fig. 3).