The comparative morphology of the fungal mat and ball of Trichophyton rubrum.

Abstract

A CDC strain ofTrichophyton rubrum was grown on solid medium and in shake cultures. The resulting forms (mat-like and spheroidal, respectively) were prepared for sectioning and study by the freeze-drying technic. The results indicate certain similarities and differences in growth and pigmentation patterns, depending upon the method of culture. Pigmentation is not random but occurs in specific areas of the fungal clone. The relationship between each form and their pigmentation patterns is briefly described and discussed.