[Degradation of poplar wood by Fomes sclerodermeus: production of ligninolytic enzymes in sawdust of poplar and cedar].
Fomes sclerodermeus is a white-rot fungus. Its production of laccase, manganese peroxidase and lignin peroxidase on sawdust-based media was evaluated. No lignin peroxidase activity was measured in any media tested. The higher production of laccase and manganese peroxidase were found on media containing poplar sawdust. F. sclerodermeus was grown on wood blocks of poplar during six months. Dry weight losses of the blocks reached a mean value of 51%. The quantification of cellulose and lignin in the 6-months incubated blocks showed losses of up to 58 and 56% for cellulose and lignin, respectively. The decay examined under microscope revealed mycelium colonizing the lumen of vessel elements, cell wall thinning and entire degradation of the radial parenchyma.
Papinutti
Víctor Leandro
VL
Departamento de Biodiversidad y Biología Experimental Facultad de Ciencias Exactas y Naturales Pabellón II, Ciudad Universitaria, 1428 Buenos Aires, Argentina. leandru@bg.fcen.uba.ar
Diorio
Luis Alberto
LA
Forchiassin
Flavia
F
D001673:Biodegradation, Environmental; D050260:Carbohydrate Metabolism; D002482:Cellulose / Q000378:metabolism; D042845:Laccase; D008031:Lignin / Q000378:metabolism; D010088:Oxidoreductases / Q000378:metabolism*; D010544:Peroxidases / Q000032:analysis / Q000378:metabolism*; D020072:Polyporales / Q000201:enzymology*; D032107:Populus; D014934:Wood
D002482:Cellulose; D008031:Lignin; D010088:Oxidoreductases; D042845:Laccase; D010544:Peroxidases; C042858:lignin peroxidase; C051129:manganese peroxidase