title: [Genetic improvement in Vicia and favism. II. Glycosidase activity].
abstract: Glycosidase activities with starch and PNP-glycosides as substrates can be detected in the cotyledons, leaves, pods and teguments of Vicia faba beans. The mainly hydrolize alpha- and beta-glucosides, alpha- and beta-galactosides as well as starch. The amylase activity arises at very early stages of seed maturation and then rapidly decreases, whereas glycosidases increase up to the 30% of the beans dry weight before decreasing. The beta-glucosidase might play a role in regulating the metabolism of possibly haemolitic glycosides (i.e. vicine, convicine and L-DOPA glucoside) thus explaining the presence of this enzyme.
mesh_terms: D007887:Fabaceae / Q000201:enzymology / Q000235:genetics*; D005236:Favism / Q000209:etiology*; D006026:Glycoside Hydrolases / Q000378:metabolism*; D010946:Plants, Medicinal; D012639:Seeds / Q000254:growth & development
chemical_list: D006026:Glycoside Hydrolases
vernacular_title: Migliogramento genetico Vicia faba e favismo - II. Attività gliccosidasiche.