Extracellular Laccases in Ascomycetes atroviride and Trichoderma harzianum

Laccase activity in Trichoderma harzianum and in our own isolate Trichoderma atroviride was correlated with the production of the green pigment in conidial spores. The laccases of the two fungal species exhibit comparable kinetic parameters, pH optima and thermal sensitivity but differed in physiologi- cal properties, such as their catalytic activity during growth.