C. J. K. Wang

A case of phaeohyphomycosis caused by a new species of Phialophora.

A subcutaneous fungus infection that developed in a kidney transplant patient on immunosuppressive maintenance therapy was found to be caused by a new species of Phialophora. This species, P. paras...

New species of ectendomycorrhizal and pseudomycorrhizal fungi: Phialophora finlandia, Chloridium paucisporum, and Phialocephala fortinii

ABSTRACTThree sporulating cultures of Mycelium radicis atrovirens sensu lato are proposed as new species of Hyphomycetes: Phialophora finlandia, Chloridium paucisporum, and Phialocephala fortinii. ...

Assessment of Phialophora species based on ribosomal DNA internal transcribed spacers and morphology

AbstractFifty-one isolates of Phialophora americana, P. parasitica, P. richardsiae, and P. verrucosa (deuteromycetes) were initially characterized by restriction enzyme mapping of the ribosomal DNA...

Molecular characterization of dematiaceous root endophytes

Sterile dematiaceous fungi are commonly isolated from plant roots. They are often assigned to Mycelium radicis atrovirens , a name originally proposed for black, sterile, fast-growing, pseudomycorrhizal fungi. Dematiaceous fungi isolated from roots may be mutualists, commensalists, or pathogens and, in the absence of sporulation, identification is not possible. Forty-six isolates of dematiaceous fungi from the roots of different hosts and locations were characterized using restriction site mapping of polymerase chain reaction amplified nuclear ribosomal DNA internal transcribed spacers. The restriction site maps were compared to identified dematiaceous mycorrhizal and pseudomycorrhizal fungi. Computer generated trees (UPGMA and parsimony analysis) characterized two unknown isolates as Phialophora finlandia , an ectendomycorrhizal fungus. The majority of the isolates were characterized as Phialocephala fortinii -like. Phialocephala fortinii has been reported as both pathogenic and non-pathogenic in a number of hosts. There was variation within the P. fortinii -like group suggesting intraspecific variation or a species complex.

Messenger RNA intron in the nuclear 18s ribosomal RNA gene of deuteromycetes.

Introns within messenger RNA genes have characteristic border sequences and a conserved region near the 3′ end of the intron. All are involved in splicing to produce the mature mRNA. Introns in ribosomal RNA genes have less well-defined borders and contain no internal conservation. We report here mRNA-type introns located near the 3′ end of the 18s rRNA genes of the deuteromycetes Phialophora americana and Cenococcum geophilum. Inserted sequences of various sizes have also been located at the same point in several other deuteromycete species.

NEW AND RARE LIGNICOLOUS HYPHOMYCETES

The following in the Hyphomycetes are proposed: as new species Phaeostalagmus altissimus, P. arbusculus, Spadicoides catenulata, and S. constricta; a new genus Articulophora with type species A. varrispora, and a new combination Spadicoides aspera. Guedea novae-zelandiae and Rhinocladium dingleyae are new records for North America. Key Word: Hyphomycetes.

STENOCEPHALOPSIS, NOT STENOCEPHALUM AS THE GENUS FOR RHINOTRICHUM SUBALUTACEUM

In a previous paper we proposed the name Stenocephalum to accommodate Rhinotrichum subalutaceum Peck (Chamuris and Wang, 1990). Unfortunately the genus name was unavailable, having been used for a genus of flowering plants (Asteraceae). We still believe that R. subalutaceum is not congeneric with Basifimbria succinea (Massee & E.S. Salmon) Seifert & W.B. Kendr. A new generic name is therefore needed.

A new species of Sporidesmiella from New York

Sporidesmiella setosa, a dematiaceous hypho? mycete, is described from bark of Betula alleghaniensis in New York. Comparison is made to S. parva and S. vignalensis, the only other two species of Sporidesmiella known to have setae.

TWO NEW SYNNEMATOUS GENERA: CHALARODENDRON AND PARADIDYMOBOTRYUM

Synnemata nonramosa, atro brunnea vel basim nigra, apicem versus pallidiora, usque ad 800 nm alta, 22-42 pm crassa; conidiophora atque Chalara secundum totam longitudinem synnematis horizontaliter formata, non ramosa, septata, pallide brunnea, laevia, cum phialidibus terminalibus; phialides lageniformes, ad basim (7.5-) 15-20 nm; conidia endogena in collo, rectangularia, hyalina, laevia, 3.5-6.25 /im, in catenis brevibus formata. Holotypus: Wang 11401, in ligno duro putrescenti ignoto, Star Lake, St. Lawrence County, New York, U.S.A., 7 Sept. 1974.