Systematic reappraisal of species in Phoma section Paraphoma, Pyrenochaeta and Pleurophoma

J. de Gruyter, J.H.C. Woudenberg, M.M. Aveskamp, G.J.M. Verkley, J.Z. Groenewald, P.W. Crous

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

    Abstract

    Sequence data from the 18S nrDNA (SSU) and 28S nrDNA (LSU) regions of isolates of Phoma section. Paraphoma were compared with those of representative isolates of the morphologically similar an am orph genera Pleurophoma and Pyrenochaeta and of the type species of Phoma sections Phonza, Pilosa and Plenodomus. Phoma section. Paraphoma was found to be highly polyphyletic within the Pleosporales and only distantly related to Phoma section Phoma. The genus Paraphonza, which is based on Paraphoma radicina, is reintroduced in the Phaeosphaeriaceae with two additional taxa. The new genera Setophoma and Neosetophoma, type species Setophoma terrestris comb. nov. and Neosetophoma samarorum comb. nov., are introduced and represent species that are closely related to Paraphoma but differ based on morphological characters and molecular phylogeny. Phoma coonsii is transferred to genus Chaetosphaeronema that also belongs to the Phaeosphaeriaceae. Pyrenochaetopsis gen. nov. is introduced to accommodate the type species Pyrenochaetopsis leptospora comb. nov., as well as several other species formerly accommodated in Phoma and Pyrenochaeta. Pyrenochaetopsis is closely related to Pyrenochaela and classified in the Cucurbitariaceae. Pleurophoma cava is transferred to genus Pyrenochaeta. The new genera elucidate the confusing taxonomy of species in genera. Phoma, Pyrenochaeta and Pleurophoma and recognize monophyletic genera with distinct teleomorph affinities.
    Original languageEnglish
    Pages (from-to)1066-1081
    JournalMycologia
    Volume102
    Issue number5
    DOIs
    Publication statusPublished - 2010

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