Bradymyces gen. nov. (Chaetothyriales, Trichomeriaceae), a new ascomycete genus accommodating poorly differentiated melanized fungi
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Ascomycota classification cytology genetics isolation & purification MeSH
- DNA, Fungal chemistry genetics MeSH
- Phylogeny MeSH
- DNA, Intergenic chemistry genetics MeSH
- Environmental Microbiology MeSH
- Microscopy MeSH
- Molecular Sequence Data MeSH
- Oncorhynchus mykiss microbiology MeSH
- DNA, Ribosomal chemistry genetics MeSH
- RNA, Ribosomal, 18S genetics MeSH
- RNA, Ribosomal, 28S genetics MeSH
- Sequence Analysis, DNA MeSH
- Cluster Analysis MeSH
- Temperature MeSH
- Tubulin genetics MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- DNA, Fungal MeSH
- DNA, Intergenic MeSH
- DNA, Ribosomal MeSH
- RNA, Ribosomal, 18S MeSH
- RNA, Ribosomal, 28S MeSH
- Tubulin MeSH
Three slow growing, melanized and morphologically poorly differentiated fungal strains were isolated from a hyperaemic focus near the enlarged spleen of a farmed rainbow trout (Oncorhynchus mykiss) and from a rock collected at 3,200 m a. s. l. (Alps, Italy). Two phylogenetic analyses of the combined nuc18S and nuc28S rDNA and ITS rDNA and β-tubulin sequences showed that these isolates belong to the Trichomeriaceae, a family of the ascomycete order Chaetothyriales containing black yeasts that cause infections in humans and animals. The strains form a well-supported monophyletic clade. The new genus Bradymyces, with two new species, Bradymyces oncorhynchi and Bradymyces alpinus, is proposed based on phylogenetic, ecophysiological and morphological data. It is characterized by the presence of moniliform hyphae, blastic proliferation, endoconidia, multicellular and muriform bodies, and bodies with dark fragmented incrustations on the surface. Bradymyces most closely resembles members of Knufia. The ex-type isolate of B. oncorhynchi CCF 4369(T) ( = CBS 133066(T) = CCFEE 6134(T)) represents the first case of a Trichomeriaceae member isolated from cold-blooded water vertebrates. B. alpinus [ex-type strain CCFEE 5493(T) ( = CBS 138368(T) = CCF 4803(T))] is represented by two isolates from a single locality in the Alps and in contrast to B. oncorhynchi shows overall slower growth parameters and does not grow at 25 °C.
References provided by Crossref.org
A visceral mycosis in farmed rainbow trout (Oncorhynchus mykiss) caused by Neopyrenochaeta submersa
GENBANK
HG426060, HG426061, HG426062, HG426063, HG426064, HG793052, HG974249, LN589970
