Uptake of calcium & chlorine in roots of Zea mays

Abstract
The absorption characteristics of vacuolated and non-vacuolated sections of the primary root of Zea mays with respect to the uptake of Ca and Cl have been determined. As in the case of Na uptake, the uptake of both Ca and Cl was a non-metabolic process in the meristematic portion of the root tip. The uptake of these ions into vacuolated portions of the root was strongly temperature dependent and, hence, largely metabolic.