A Compartmental Analysis of Abscisic Acid in Roots ofHordeum distichon

Abstract
An efflux compartmental analysis of abscisic acid (ABA) in barley roots revealed two compartments of ABA, a fast exchanging one (probably the cytoplasm) containing 3.63 μM ABA and a slowly exchanging compartment (probably the vacuoles) which contained 0.39 μM ABA.