. Fungous les maladies des plantes : avec des chapitres sur la physiologie, les méthodes de culture et de technique . Les champignons dans l'agriculture. 456 FUNGOUS LES MALADIES DES PLANTES la disparition de l'amidon, cellulose, proteids et suggère que le champignon produit protéolytique, amylolytiques, cyteolytic et enzymes." Une étude directe de ce point a été tentée par des extraits de fruits frais, jeune, et les tests de ces organes. C'est peut-être pas un critère absolu pour la base d'un avis sur les enzymes produites dans la ma- celium, c'est inter- esting néanmoins que la laccase, tyrosinase, amylase, emulsin, pr

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. Fungous diseases of plants : with chapters on physiology, culture methods and technique . Fungi in agriculture. 456 FUNGOUS DISEASES OF PLANTS the disappearance of starch, proteids, and cellulose suggests that the fungus produces amylolytic, proteolytic, and cyteolytic enzymes." A direct study of this point was attempted by making extractions from fresh, young fruit bodies, and testing these. While this may not be an absolute criterion for the basis of an opinion as to the enzymes produced in the my- celium, it is nevertheless inter- esting that laccase, tyrosinase, amylase, emulsin, protease, lipase, rennetase, and coagu- lase were seemingly present, "whereas negative results were obtained in the tests for pec- tase, maltase, invertase, treha- lase, and cytase. However, a study of the destruction of wood by the fungus furnishes evidence that the. mycelium produces cy- tase and possibly hadromase." The sporophores arise singly or in clusters of a few brackets, usually during summer and early autumn. It requires but a brief period for these sporophores to attain their growth, brackets measuring 15—25 cm. in width having been observed to com- plete growth within two weeks. The mature sporophore is yel- lowish brown above, and the surface of the cap is thrown into characteristic brown scales. The plants are commonly 15-30 cm. broad, although one speci- men measuring 65 cm. and weighing approximately six and a half pounds has been found (Buller). The margins of the pileus are slightly revolute even on maturity, the lower surface of the pileus yellowish, with pores at first small, later expanding, and angular.. Fig. 225. Polyporus squamosus: Pro- gressive Destruction of Wood (After Buller). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Duggar, Benjamin M. (Benjamin Minge), 1872-19

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