Contributes to surface hydrophobicity, which is important for processes such as association of hyphae in reproductive structures, dispersal of aerial spores and adhesion of pathogens to host structures. Produced abundantly, except in the ds-RNA virus-infected strains, where the expression is much reduced. Cell wall of aerial hyphae and sporulation structures. Abundantly secreted. Highly expressed on day 2 and 3 after inoculation, a time when the fungus is in a rapid phase of growth. After a stationary phase on day 4, the expression decreases. Belongs to the cerato-ulmin hydrophobin family.