| Abstract: | A cytochemical and electrophoretic analysis of alpha-naphthyl and naphthol AS-D acetate esterases from the radicles of pea seeds germinated for 24, 36 and 48 h permitted the detection of the loss of activity from the procortex with time after germination, but a stability of this activity in the prostele. Inhibitor studies showed the procambial enzyme as a single band of carboxylesterase activity the remainder being acetylesterase activity. The procambial carboxylesterase which is present in the more mature root apex corresponds to that of the 48-h embryo (separating at Rf 0·74). |
