title: Cladosporium carrionii and Hormoconis resinae (C. resinae): cell wall and melanin studies.
abstract: Two phaeoid strains of the fungus Cladosporium carrionii (SR3 from a xerophyte species and PP8201 from a patient), and one strain of Hormoconis resinae (Cladosporium resinae), isolated from oil-impregnated soil, were analyzed for their cell wall composition by colorimetric methods, X-ray diffraction, infrared spectroscopy, and solid-state 13C-nuclear magnetic resonance. Results suggested that the cell walls were composed mainly of hexoses (34%-47%) as beta-1,3-glucan (some galactose and mannose were also present) and melanin, chitin being absent. Electron microscopic observations suggested that melanin was found not only in the cell wall but also in intracellular bodies resembling melanosomes.
authors.affiliation: Centro de Microbiología y Biología Celular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela.
authors.forename: G
authors.initials: G
authors.lastname: San-Blas
authors.forename: O
authors.initials: O
authors.lastname: Guanipa
authors.forename: B
authors.initials: B
authors.lastname: Moreno
authors.forename: S
authors.initials: S
authors.lastname: Pekerar
authors.forename: F
authors.initials: F
authors.lastname: San-Blas
mesh_terms: D002473:Cell Wall / Q000378:metabolism; D002963:Cladosporium / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008543:Melanins / Q000032:analysis*; D008854:Microscopy, Electron; D014961:X-Ray Diffraction
chemical_list: D008543:Melanins