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1998
LePage, B.A., Currah, R.S., Stockey, R.A.
Two ascomycetes from the middle Eocene (48.7 million yr b.p.) Princeton chert are described. Palaeoserenomyces allenbyensis gen. et sp. nov. consists of long, loculate stromata of distinctive columnar cells beneath the epidermis of the extinct fan palm, Uhlia allenbyensis. The sporogenous locules...
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2007
Greif, M.D., Tsuneda, A., Currah, R.S., Gibas, C.F.C.
Catinella olivacea is a discomycetous fungus often found fruiting within cavities in rotting logs. Because this habitat would lack the air currents upon which discomycete species normally rely for the dispersal of their forcibly ejected ascospores, we suspected an alternative disseminative...
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Ascomatal Morphogenesis in Myxotrichum arcticum Supports the Derivation of the Myxotrichaceae from a Discomycetous Ancestor
Download2004
Electron microscopy shows that ascomata of Myxotricum arcticum bear a striking resemblance to discocarps in morphogenesis and in previously overlooked aspects of gross morphology. Although mature ascomata of M. arcticum superficially resemble reticuloperidial cleistothecia common in the...
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Atradidymella muscivora gen. et sp. nov. (Pleosporales) and its anamorph Phoma muscivora sp. nov.: A new pleomorphic pathogen of boreal bryophytes
Download2009
During a survey of bryophilous fungi from boreal and montane habitats, 12 isolates of a hitherto unknown plant pathogenic member of the Pleosporales were recovered from Aulacomnium palustre , Hylocomium splendens , and Polytrichum juniperinum , and described as Atradidymella muscivora gen. et sp....
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Comparative Morphology and Phylogenetic Placement of Two Microsclerotial Black Fungi from Sphagnum
Download2003
Currah, R.S., Hambleton, S., Tsuneda, A.
Capnobotryella renispora and Scleroconidioma sphagnicola form black, irregularly shaped microsclerotia that are indistinguishable in gross morphology on leaves of Sphagnum fuscum. In culture, microsclerotia of these fungi were similar, in that mature component cells possessed thick, highly...
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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...
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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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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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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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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,...