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The Peridial Development and Dehiscence Mechanism of Cryptendoxyla hypophloia, a Cleistothecial Ascomycete Isolated from the Bodies of Arthropods
Download2004
Currah, R.S., Greif, M.D., Tsuneda, A.
Cryptendoxyla hypophloia is a rarely reported cleistothecial ascomycete that has a cephalothecoid peridium comprising six to eight plates that split apart at maturity to expose the ascospores. Three new isolates from the bodies of live-trapped insects represent circumstantial evidence supporting...
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2009
Gibas, C.F.C., McGhee, D., Wang, W., Currah, R.S., Tsuneda, A
Phialocephala urceolata sp. nov. was isolated from a black film that had developed on a watersoluble proprietary heparin solution (pH 2.5). Morphological and enzymatic characters, along with phylogenetic analyses of rDNA sequence data, indicated that the conidial fungus is closely related to...
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Patterns in the occurrence of saprophytic fungi carried by arthropods caught in traps baited with rotted wood and dung
Download2007
Fungi from approximately 1700 individual arthropods that had been captured in traps set in aspen-dominated woodland in western Canada and baited with coyote dung, moose dung, white-rotted wood, brown-rotted wood and fiberglass were isolated in pure culture and identified. These data were analysed...
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2009
Tsuneda, A., Davey, M.L., Currah, R.S.
Atradidymella muscivora (Pleosporales) is a bryophyte pathogen that infects the mosses Aulacomnium palustre , Hylocomium splendens , and Polytrichum juniperinum . Light and scanning electron microscopy and extracellular enzyme production were used to characterize the interactions between this...
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2006
Skinner, S., Currah, R.S., Tsuneda, A.
Light and electron microscopy showed that the reticuloperidium of thick-walled hyphae, characteristic of the mature ascoma of Auxarthron conjugatum, originated from branches that grew from the broad, gyre-like hyphal loops making up the ascomatal initials. Within the developing peridium, short,...
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Morphology and Phylogenetic Placement of Endoconidioma, a New Endoconidial Genus from Trembling Aspen
Download2004
Tsuneda, A., Hambleton, S., Currah, R.S.
Endoconidioma populi gen. et sp. nov. is described from black subicula on twigs of trembling aspen, Populus tremuloides, in Alberta, Canada. Pycnidium- like conidiomata are produced on twigs and in culture, but, unlike pycnidia, conidiomata of E. populi have a closed peridium and a locule filled...
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Microascus brevicaulis sp. nov., the Teleomorph of Scopulariopsis brevicaulis, Supports Placement of Scopulariopsis with the Microascaceae
Download1998
Abbott, Sean P., Sigler, Lynne, Currah, R.S.
Five isolates of Scopulariopsis brevicaulis have been found to form perithecia in addition to typical conidia. The teleomorph is described as Microascus brevicaulis sp. nov., characterized by small (70-130 pLm diam), black, ostiolate ascocarps that are papillate or very short-necked, and with a...
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Evidence that the gemmae of Papulaspora sepedonioides are neotenous perithecia in the Melanosporales
Download2008
Tsuneda, A., Davey, M.L., Currah, R.S.
Papulaspora sepedonioides produces large multicellular gemmae with several, thick-walled central cells enclosed within a sheath of smaller thinwalled cells. Phylogenetic analysis of the large subunit rDNA indicates P. sepedonioides has affinities to the Melanosporales (Hypocreomycetidae). The...
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Endomembrane system of aspen roots plays a key role in defense against a common fungal endophyte Cryptosporiopsis radicicola
Download2009
Tsuneda, I., Wang, W., Currah, R.S., Tsuneda, A.
The host-endophyte interaction between roots of aspen (Populus tremuloides) andCryptosporiopsis radicicola was examined primarily by transmission electron microscopy. Hyphae growing on the exterior of the inoculated roots had a thick, electron-dense, adhesive sheath. At hyphal contact and...
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2004
Tsuneda, A., Currah, R.S., Tsuneda, I.
Details of the development of endoconidia were basically the same in Endoconidioma populi and Phaeotheca fissurella. In both species, endoconidiogenesis involved (i) subdivision of conidiogenous mother cells by septation to form two to several daughter cells; (ii) accumulation of an electrondense...