Fungalpedia – Note 1922, Oxydothidaceae
Oxydothidaceae. S. Konta & K.D. Hyde.
Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic, endophytic or parasitic on monocotyledons. Sexual morph: Ascomata solitary or irregularly scattered, ellipsoidal or subglobose, immersed or semi-immersed, slightly raised from host surface with light or darkened discs, with most taxa lying horizontal to the host surface. Peridium thick-walled, brown to dark brown, and/or peridium cells merging with the host tissue. Paraphyses hypha-like, filamentous, irregular, septate, persisting between asci, but often fragmenting in dried material. Asci 8-spored, unitunicate, cylindrical, pedicellate, with a J+ (rarely J-), subapical ring. Ascospores fasciculate, hyaline, sometimes appearing yellow in mass, fusiform or filiform, 1-septate, tapering from the center to spine-like, pointed or rounded ends. Appressoria produced by germinating ascospores in some species, solitary, hyaline or greenish, or pale brown to brown, irregular in shape, thick-walled. Asexual morph: Hyphomycetous. Selenosporella sp. Conidiophores mononematous, (1–)2–3-septate, unbranched or 1-branced, brown olivaceous, thick-walled at below, thin-walled and colourless above, unicellular, colourless, distinct obviously differentiated apex or base (adapted from Samuels & Rossman 1987, Konta et al. 2016).
Notes – Oxydothidaceae (Konta et al. 2016) was established to accommodate the monotypic genus Oxydothis, and it is phylogenetically related to Vialaeaceae and Iodosphaeriaceae in Xylariales. Hyde et al. (2017a) provided a molecular clock estimates to evaluate the ranking of taxa of Sordariomycetes, and indicated that the status of Oxydothidaceae is supported with a divergence of 114 MYA (stem age), which is in the recommended divergence range for families (50–130 MYA).
Type genus: Oxydothis Penz. & Sacc.
Other accepted species: Species Fungorum – search Oxydothidaceae.
References
Entry by
Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China
Published online 28 February 2020