Comparative effect of osmium tetroxide and ruthenium tetroxide on Penicillium sp. hyphae and Saccharomyces cerevisiae fungal cell wall ultrastructure.
Keywords:
fungal cell wall, fungal ultrastructure, osmium tetroxide, ruthenium tetroxide, penicillium sp, saccharomyces cerevisiae
Abstract
The fungal cell wall viewed through the electron microscope appears transparent when fixed by the conventional osmium tetroxide method. However, ruthenium tetroxide post-fixing has revealed new details in the ultrastructure of Penicillium sp. hyphae and Saccharomyces cerevisiae yeast. Most significant was the demonstration of two or three opaque diverse electron dense layers on the cell wall of each species. Two additional features were detected. Penicillium septa presented a three-layered appearance and budding S. cerevisiae yeast cell walls showed inner filiform cell wall protrusions into the cytoplasm. The combined use of osmium tetroxide and ruthenium tetroxide is recommended for post-fixing in electron microscopy studies of fungi.Downloads
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How to Cite
1.
Torres-Fernández O, Ordóñez N. Comparative effect of osmium tetroxide and ruthenium tetroxide on Penicillium sp. hyphae and Saccharomyces cerevisiae fungal cell wall ultrastructure. biomedica [Internet]. 2003 Jun. 1 [cited 2024 May 18];23(2):225-31. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/1215
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Published
2003-06-01
Issue
Section
Technical note
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