The Effects of Calcium and Tris(Hydroxymethyl)Amino-Methane on Potassium Uptake During and After the Lag Phase in Red Beet Tissue

Abstract

Both CaH and tris(hydroxymethyl)aminomethane (Tris) caused a shortening of the lag phase in net K+ absorption in beetroot tissue. At pH 8 the effect of Tris was more immediate than that of CaH, while the reverse was true at pH 6. At both pH values the effect of CaH prevailed when CaH and Tris were simultaneously present in the external solution.