Abstract

Different strains of two basidiomycetes, Stereum hirsutum and Phanerochaete velutina, were treated with dead and living populations of the free-living nematode Panagrellus redivivus. Responses to treatment differed within and between the two fungal species: growth of S. hirsutum was reduced, whereas that of P. velutina was stimulated. P. velutina displayed increased protease and reduced esterase and acid phosphatase activities, whereas S. hirsutum displayed increased protease and acid phosphatase activity. In S. hirsutum, laccase, tyrosinase and cellulase production increased in response to living nematodes, and amylase increased in response to dead nematodes. Spot tests indicated spatial localization of laccase and acid phosphatase in different hyphal regions of both species.

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