title: Ultrastructural characteristics and variability of vegetative reproduction in Fellomyces penicillatus.
abstract: The yeast strains VKM Y-2977 and VKM Y-2978, derived from the isolate Pa-202, were examined for their physiological properties and mycocin sensitivities and studied by light, phase-contrast, fluorescence, transmission and scanning electron microscopy. The cells of the first strain produced long stalk-like conidiophores, whereas the cells of the second one had the appearance of a typical budding yeast under the light microscope. Transmission and scanning electron microscopy showed the formation of stalk-like conidiophores and long necks in VKM Y-2977, similar in appearance to Fellomyces fuzhouensis. The actin cytoskeleton, microtubules and nuclei were similar as well, but due to presence of a capsule, they were not clearly visible. The second isolate, VKM Y-2978, had very short stalk-like conidiophores, and the neck, microtubules and actin cables were shorter as well. The actin patches, actin cables, and microtubules were similar in VKM Y-2977 and VKM Y-2978 and not clearly visible. The physiological characteristics and mycocin sensitivity patterns, together with the microscopic structures and ultrastructures, led us to conclude that both strains belong to Fellomyces penicillatus, even though they differ in the lengths of their stalk-like conidiophores and necks.
authors.affiliation: Department of Biology, Masaryk University, Brno, Czech Republic. mkopecka@med.muni.cz
authors.forename: Marie
authors.initials: M
authors.lastname: Kopecká
authors.forename: Wladyslav
authors.initials: W
authors.lastname: Golubev
authors.forename: Vladimíra
authors.initials: V
authors.lastname: Ramíková
authors.forename: Dobromila
authors.initials: D
authors.lastname: Klemová
authors.forename: Ladislav
authors.initials: L
authors.lastname: Ilkovics
mesh_terms: D000199:Actins / Q000648:ultrastructure; D000935:Antifungal Agents / Q000494:pharmacology; D001487:Basidiomycota / Q000145:classification / Q000187:drug effects / Q000254:growth & development* / Q000648:ultrastructure*; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D008853:Microscopy; D008870:Microtubules / Q000648:ultrastructure; D013172:Spores, Fungal / Q000187:drug effects / Q000254:growth & development / Q000648:ultrastructure
chemical_list: D000199:Actins; D000935:Antifungal Agents