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1. Hashimoto  A, Hirayama  K, Takahashi  H, Matsumura  M, Okada  G, Chen  CY, Huang  JW, Kakishima  M, Ono  T, Tanaka  K,     ( 2018 )

Resolving the Lophiostoma bipolare complex: Generic delimitations within Lophiostomataceae.

Studies in mycology 90 (N/A)
PMID : 29632417  :   DOI  :   10.1016/j.simyco.2018.03.001     PMC  :   PMC5889712    
Abstract >>
Lophiostoma bipolare was taxonomically revised based on the morphological observations and phylogenetic analyses of molecular data from nuclear rDNA SSU-ITS-LSU, TUB, tef1, and rpb2 genes. Twenty-nine strains were morphologically similar to Lo. bipolare. A total of 174 sequences were generated from the Lo. bipolare complex. Phylogenetic analyses based on TUB sequence revealed 11 distinct species within the Lo. bipolare complex. Morphological features of the ascospores and the anatomical structure of the ascomata from both field collections as well as axenic culture, which have been reported previously as variable features at intraspecific levels, were compared to evaluate the taxonomic reliability of these features. To clarify the generic position of the 11 species, phylogenetic analyses were done on SSU-ITS-LSU-tef1-rpb2 gene sequences. The Lo. bipolare complex shared phylogenetic relationships with Pseudolophiostoma and Vaginatispora, and formed an additional five distinct clades from other members of Lophiostomataceae. According to its phylogenetic position, Lo. bipolare sensu stricto was distantly related to Lophiostoma s. str., and formed an independent clade within Lophiostomataceae. Lophiostoma bipolare s. str. could be distinguished from the other lophiostomataceous genera by the clypeus around the ostiolar neck and by the thin and uniformly thick peridium. A novel genus described as Lentistoma was established to accommodate this species, and the epitypification of Lentistoma bipolare (basionym: Massarina bipolaris) was proposed. Other lineages of the Lo. bipolare complex could not be separated on the basis of the ascospore size and sheath variations, but were distinguished based on ascomatal features, such as the existence of the clypeus, brown hyphae surrounding the peridium, and the contexture of the peridium, which were stable indicators of generic boundaries in Lophiostomataceae. Four additional new genera with five new species were recognised based on these morphological differences: Crassiclypeus (C. aquaticus), Flabellascoma (F. cycadicola and F. minimum), Leptoparies (Lep. palmarum), and Pseudopaucispora (Pseudop. brunneospora). Three new species were added to Pseudolophiostoma (Pseudol. cornisporum, Pseudol. obtusisporum, and Pseudol. tropicum) and two new species were added to Vaginatispora (V. amygdali and V. scabrispora). The re-evaluation of the validity of several previously recognised genera resulted in the introduction of two new genera with new combinations for Lophiostoma pseudoarmatisporum as Parapaucispora pseudoarmatispora and Vaginatispora fuckelii as Neovaginatispora fuckelii.
KeywordMeSH Terms
1 new typification
21 new taxa
Crassiclypeus A. Hashim., K. Hiray. & Kaz. Tanaka
Crassiclypeus aquaticus A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma cycadicola A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka
Freshwater fungi
Lentistoma A. Hashim., K. Hiray. & Kaz. Tanaka
Lentistoma bipolare (K.D. Hyde) A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies palmarum A. Hashim., K. Hiray. & Kaz. Tanaka
Massarina bipolaris K.D. Hyde
Neovaginatispora A. Hashim., K. Hiray. & Kaz. Tanaka
Neovaginatispora fuckelii (Sacc.) A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora pseudoarmatispora (Hay. Takah. et al.) A. Hashim., K. Hiray. & Kaz. Tanaka
Pleosporales
Pseudolophiostoma cornisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma obtusisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma tropicum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka
Species complex
Systematics
Taxonomy
Vaginatispora amygdali A. Hashim., K. Hiray. & Kaz. Tanaka
Vaginatispora scabrispora A. Hashim., K. Hiray. & Kaz. Tanaka
1 new typification
21 new taxa
Crassiclypeus A. Hashim., K. Hiray. & Kaz. Tanaka
Crassiclypeus aquaticus A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma cycadicola A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka
Freshwater fungi
Lentistoma A. Hashim., K. Hiray. & Kaz. Tanaka
Lentistoma bipolare (K.D. Hyde) A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies palmarum A. Hashim., K. Hiray. & Kaz. Tanaka
Massarina bipolaris K.D. Hyde
Neovaginatispora A. Hashim., K. Hiray. & Kaz. Tanaka
Neovaginatispora fuckelii (Sacc.) A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora pseudoarmatispora (Hay. Takah. et al.) A. Hashim., K. Hiray. & Kaz. Tanaka
Pleosporales
Pseudolophiostoma cornisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma obtusisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma tropicum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka
Species complex
Systematics
Taxonomy
Vaginatispora amygdali A. Hashim., K. Hiray. & Kaz. Tanaka
Vaginatispora scabrispora A. Hashim., K. Hiray. & Kaz. Tanaka
1 new typification
21 new taxa
Crassiclypeus A. Hashim., K. Hiray. & Kaz. Tanaka
Crassiclypeus aquaticus A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma cycadicola A. Hashim., K. Hiray. & Kaz. Tanaka
Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka
Freshwater fungi
Lentistoma A. Hashim., K. Hiray. & Kaz. Tanaka
Lentistoma bipolare (K.D. Hyde) A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies A. Hashim., K. Hiray. & Kaz. Tanaka
Leptoparies palmarum A. Hashim., K. Hiray. & Kaz. Tanaka
Massarina bipolaris K.D. Hyde
Neovaginatispora A. Hashim., K. Hiray. & Kaz. Tanaka
Neovaginatispora fuckelii (Sacc.) A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Parapaucispora pseudoarmatispora (Hay. Takah. et al.) A. Hashim., K. Hiray. & Kaz. Tanaka
Pleosporales
Pseudolophiostoma cornisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma obtusisporum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudolophiostoma tropicum A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka
Species complex
Systematics
Taxonomy
Vaginatispora amygdali A. Hashim., K. Hiray. & Kaz. Tanaka
Vaginatispora scabrispora A. Hashim., K. Hiray. & Kaz. Tanaka

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