Effect of Extracellular Metabolites fromGliocladium virenson Germination of Sporangia and Mycelial Growth ofPythium ultimum

Abstract

Culture supernatants from G.v. grown in 5% bran extract or in minimal medium supplemented with autoclaved hyphae of P.u. inhibited sporangial germination and mycelial growth of P.u. They contained gliotoxin and laminarinase, amylase, carboxymethylcellulase, chitinase and protease activities. They remained inhibitory after the above enzyme activities were inactivated by heating or removed by size-fractionation. Grown in the supplemented minimal medium, which did not contain these enzyme activities, they strongly inhibited sporangial germination and mycelial growth (...)