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  • Title: They seldom occur alone.
    Author: Crous PW, Groenewald JZ.
    Journal: Fungal Biol; 2016 Nov; 120(11):1392-1415. PubMed ID: 27742096.
    Abstract:
    Species of Coleophoma have been reported as plant pathogenic, saprobic or endophytic on a wide host range. The genus is characterised by having pycnidial conidiomata, phialidic conidiogenous cells intermingled among paraphyses, and cylindrical conidia. Coleophoma has had a confusing taxonomic history with numerous synonyms, and its phylogeny has remained unresolved. The aim of the present study was to use a polyphasic approach incorporating morphology, ecology, and molecular data of the partial large subunit of nrDNA (LSU), the internal transcribed spacer region with intervening 5.8S nrDNA (ITS), partial β-tubulin (tub2), and translation elongation factor 1-alpha (tef1) gene sequences to resolve its taxonomy and phylogeny. Based on these results the genus was found to be polyphyletic, with taxa tentatively identified as Coleophoma clustering in Dothideomycetes and Leotiomycetes. Species corresponding to the concept of Coleophoma s.str. (Dermateaceae, Helotiales, Leotiomycetes) were found to form a distinct clade, with five new species. Furthermore, Coleophoma was found to be linked to the newly established sexual genus, Parafabraea, which is reduced to synonymy. Isolates occurring on Ilex aquifolium in the Netherlands also clustered in Dermateaceae, representing a novel genus, Davidhawksworthia. In the Dothideomycetes, several taxa clustered in Dothiora (Dothideaceae, Dothideales), which is shown to have Dothichiza and Hormonema-like asexual morphs, with four new species. Furthermore, Pseudocamaropycnis is introduced as a new genus (Mytilinidiaceae, Mytilinidiales), along with Briansuttonomyces (Didymellaceae, Pleosporales) and Dimorphosporicola (Pleosporaceae, Pleosporales).
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