Carbohydrate and lipid components of hyphae and conidia of human pathogenFonsecaea pedrosoi |
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| Authors: | Rosangela Ma A de Soares Jayme Angluster Wanderley de Souza Celuta S Alviano |
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| Institution: | (1) Instituto de Microbiologia, Instituto de Biofisica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 21.941-590 Rio de Janeiro - R.J, Brazil;(2) Departmento de Microbiologia Geral — Instituto de Microbiologia, CCS — Bloco I, Cidade Universitária — Ilha do Fundão, 21.941-590 Rio de Janeiro — R.J, Brazil |
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| Abstract: | The carbohydrate and lipid components of mycelium and conidia ofFonsecaea pedrosoi (Brumpt) were analysed by paper, thin-layer and gas-chromatography, mass spectrometry and ultraviolet spectroscopy. Glucose, mannose, galactofuranose, rhamnose and glucosamine were polysaccharide components identified inF. pedrosoi. Significant changes in the carbohydrate pattern occurred during the conversion of mycelium into conidia. Rhamnose was predominant in conidia whereas galactose was prominent in mycelium. Palmitic, stearic, oleic, linoleic, and arachidonic acids were the fatty acids identified in the total lipid fraction. Palmitic and oleic acids were major fatty acids. Marked alterations in the fatty acid constituents were observed between the cell types ofF. pedrosoi. Arachidonic acid was detected only in conidia and linoleic acid was preferentially identified in mycelium. Differences in the sterol composition was also associated with morphogenesis inF. pedrosoi. Two main sterols, ergosterol and another less polar sterol, not fully characterized, were found in mycelium whereas in conidia only the latter sterol was present. |
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| Keywords: | Fonsecaea pedrosoi Morphogenesis Carbohydrates Lipids |
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