@ARTICLE{TreeBASE2Ref19412, author = {Nattawut - Boonyuen and Charuwan Chuaseeharonnachai and Satinee Suetrong and Veera - Sri-indrasutdhi and Ka-Lai Pang and S. Sivichai and E. B. Gareth Jones}, title = {A novel lineage of aquatic ascomycetes inferred from multiple-gene phylogenies of the genera Ascotaiwania, Ascothailandia, and Savoryella}, year = {2011}, keywords = {ascomycota incertae sedis, hypocreomycetidae, fungal systematics, unitunicate ascomycetes.}, doi = {}, url = {http://}, pmid = {}, journal = {Mycologia}, volume = {}, number = {}, pages = {33}, abstract = {The taxonomic placement of freshwater and marine Savoryella species has been widely debated, and the genus has been tentatively assigned to various orders in the Sordariomycetes. The genus is characterized as possessing paraphyses that deliquesce early, elongate, clavate to cylindrical asci with a poorly developed apical ring and versicoloured, 3-septate ascospores. We performed two combined phylogenetic analyses of different genes: (1) partial small subunit rRNA (SSU), large subunit rRNA (LSU), DNA-dependent RNA polymerase II largest subunit (RPB2) dataset and (2) SSU rDNA, LSU rDNA, DNA-dependent RNA polymerase II largest subunit (RPB1 and RPB2), translation elongation factor 1-alpha (TEF-l), the 5.8S ribosomal DNA (5.8S rDNA) dataset. Our results indicate that Savoryella species formed a monophyletic group within the Sordariomycetes but they showed no affinity to the Hypocreales, Halosphaeriales (Microascales), Sordariales and Xylariales, despite earlier assignments to these orders. Furthermore, Savoryella, Ascotaiwania, Ascothailandia (and its anamorph Canalisporium) formed a new lineage that have invaded both marine and freshwater habitats, indicating that these genera share a common ancestor and are closely related. Because the genus shows no clear relationship with any named order or family, it is currently designated the ACS clade and referred to the subclass Hypocreomycetidae incertae sedis within the Sordariomycetes. The genera Savoryella and Ascothailandia are monophyletic, while the position of Ascotaiwania species is unresolved. All three genera are phylogenetically related, and form a distinct clade similar to the unclassified group of marine ascomycetes comprising the genera Swampomyces, Torpedospora and Juncigera (TBM clade: Torpedospora/Bertia/Melanospora) in the Hypocreomycetidae incertae sedis.} }

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