Fig. 3

Monovalent cation selectivity of OsHKT1;4 expressed in X. laevis oocytes. Current–voltage relationships of oocytes injected with 3 ng of OsHKT1;4 cRNA or water (inset), bathed in solutions containing each 10 mM chloride salt indicated in the graph (n = 9-11, ±SE). Voltage steps from +30 to −150 mV were applied with a holding potential of −40 mV