In other words,the higher the susceptibility,the greater the potassium transport in the root (Rb
+uptake andK++Rb+xylem transport) (Figs.2and4B). It is possible that
potassium root starvation, induced by water stress, could be the
cause of the increase in potassium transport under water stress
conditions. It is well known that root potassium starvation
enhances the absorptionof potassium by the root and its discharge
into the xylem