VARIATIONS IN ACTIVITIES OF GLYCOGEN PHOSPHORYLASE AND TREHALASE DURING THE PERIODIC FRUITING OF THE EDIBLE MUSHROOM AGARICUS BISPORUS (LANGE) IMBACH.

Summary Activities of trehalase and glycogen phosphorylase were determined for stage 1 (pin) sporophores of Agaricus bisporus harvested daily throughout several fruiting cycles (flushes). Both enzymes exhibited maximum activity coincident with peak flush, as defined by maximum yield of stage 2 to 4 sporophores and minimum activity during the interflush periods. Glycogen phosphorylase activity sometimes peaked on more than one occasion during a flush, whereas trehalase gave only a single peak of activity per flush. These results are discussed in relation to metabolic events associated with carbohydrate changes during the periodic fruiting cycle of this fungus.

[1]  J. Hammond,et al.  The Agaricus bisporus mannitol pathway during sporophore growth , 1985 .

[2]  J. Hammond,et al.  Mannitol Metabolism in Agaricus bisporus: Purification and Properties of Mannitol Dehydrogenase , 1985 .

[3]  D. Wood,et al.  Production and Regulation of Extracellular Endocellulase by Agaricus bisporus , 1983 .

[4]  J. Hammond.  VARIATIONS IN ENZYME ACTIVITY DURING PERIODIC FRUITING OF AGARICUS BISPORUS , 1981 .

[5]  T. Okita,et al.  Characterization of the spinach leaf phosphorylases. , 1980, Plant physiology.

[6]  J. Hammond,et al.  CARBOHYDRATE METBOLISM IN AGARICUS BISPORUS: CHAGES IN NON‐STRUCTURAL CARBROHYDRATES DURING PERIODIC FRUITING (FLUSHING) , 1979 .

[7]  D. Chanter.  Harvesting the Mushroom Crop: a Mathematical Model , 1979 .

[8]  K. Killick.  Trehalose 6-phosphate synthase from Dictyostelium discoideum: partial purification and characterization of the enzyme from young sorocarps. , 1979, Archives of biochemistry and biophysics.

[9]  J. Thornley,et al.  Mycelial Growth and the Initiation and Growth of Sporophores in the Mushroom Crop: a Mathematical Model , 1978 .

[10]  I. Wyatt.  Principles of insecticide action on mushroom cropping: incorporation into compost , 1977 .

[11]  M. M. Bradford.  A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. , 1976, Analytical biochemistry.

[12]  J. Hammond,et al.  Carbohydrate metabolism in Agaricus bisporus (Lange) Sing: changes in soluble carbohydrates during growth of mycelium and sporophore. , 1976, Journal of general microbiology.

[13]  J. Hammond,et al.  Changes in respiration and soluble carbohydrates during the post-harvest storage of mushrooms (Agaricus bisporus) , 1975 .

[14]  I. Fleming,et al.  The determination of glucose in the presence of maltose and isomaltose by a stable, specific enzymic reagent , 1963 .