title: [Regulation of various hydrolase activities in the myxomycete Physarum polycephalum].
abstract: In a standard growing medium, the specific activities of acid-phosphatase, beta-galactosidase and beta-glucosidase of Physarum polycephalum increase during the growth of the culture. The decrease of the pH of the culture medium during the growth has no effect on the variations of these hydrolase activities. In a glucose-starved medium, the specific activity of beta-galactosidase increases up to 350% of its initial value in 24 h, whereas the specific activities of acid phosphatase and beta-glucosidase stay near their minimal level.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism*; D003470:Culture Media; D005690:Galactose / Q000378:metabolism; D005696:Galactosidases / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D005959:Glucosidases / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D010804:Physarum / Q000201:enzymology* / Q000254:growth & development; D001616:beta-Galactosidase / Q000378:metabolism*; D001617:beta-Glucosidase / Q000378:metabolism*
chemical_list: D003470:Culture Media; D000135:Acid Phosphatase; D005696:Galactosidases; D005959:Glucosidases; D001617:beta-Glucosidase; D001616:beta-Galactosidase; D005947:Glucose; D005690:Galactose
vernacular_title: Régulation de l'activité de quelques hydrolases chez le myxomycète Physarum polycephalum.