CLADOSPORIUM-CARRIONII AND HORMOCONIS-RESINAE (CLADOSPORIUM-RESINAE) - CELL-WALL AND MELANIN STUDIES

Two phaeoid strains of the fungus Cladosporium carrionii (SR3 from a x erophyte species and PP8201 from a patient), and one strain of Hormoco nis resinae (Cladosporium resinae), isolated from oil-impregnated soil , were analyzed for their cell wall composition by colorimetric method s, X-ray diffraction, infrared spectroscopy, and solid-state C-13-nucl ear magnetic resonance. Results suggested that the cell walls were com posed mainly of hexoses (34%-47%) as beta-1,3-glucan (some galactose a nd mannose were also present) and melanin, chitin being absent. Electr on microscopic observations suggested that melanin was found not only in the cell wall but also in intracellular bodies resembling melanosom es.