Piptoporus betulinus is a parasitic fungus on Betula spp.,and catalyzes wood fiber into carbohydrate using its secretory enzymes. However,wood-degrading enzymes by this brown-rot fungus and its genetic diversity have been poorly studied. Here we collected fruiting bodies of P.betulinus from four sites in Northeastern China,detected their cellulase and hemicellulase activities,and then analyzed genetic diversity using target region amplified polymorphism(TRAP)marker. The results showed that enzymatic activit...