Etude de l'activite de l'arginine decarboxylase dans les jeunes plantes de Glycine max privees de leurs cotyledons

l-Arginine carboxy-lyase and l-ornithine carboxy-lyase activities were investigated in young decotylized Glycine max plants growing in the light on a liquid medium in the presence of ammonium chloride or nitrate. Only the first enzyme could be detected. It had pH optimum at 7.0 activity and there is much more activity in plants cultivated on ammonium chloride than in plants grown on nitrate.