[Role of an exoprotease biosynthesis-stimulating microbial factor in Aspergillus kanagawaensis in the process of its growth and development].

Morphofunctional changes were studied in the culture of Aspergillus kanagawaensis producing exoproteases; the changes accompanied an increase in the rate of biosynthesis of these enzymes in the presence of a stimulating factor produced by Aspergillus wentii. The germination of conidia and the formation of the secondary mycelium in A. kankagawaensis were delayed by 6--12 hours under the action of the stimulating factor. The monoculture of the fungus producing exoproteases is characterized by the formation of the colonial type of mycelium; however, the diffuse type of mycelium is observed in the presence of the stimulating factor, i. e. the maximal rate of the enzyme production correlates with the high degree of differentiation of the mycelium structural units.