Fungalpedia – Note 885, Aquapteridospora
Aquapteridospora. J. Yang, K.D. Hyde & Maharachch.
Citation when using this data: Dong W et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Incertae sedis, Incertae sedis, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Aquapteridospora is characterized by polyblastic conidiogenous cells, fusiform, 3-septate, thin-walled conidia with pale to dark brown central cells and paler end cells, often with a conspicuous sheath (Yang et al. 2015). In our multigene analysis, Pleurophragmium bambusinum clusters within Aquapteridospora with high bootstrap support. However, P. bambusinum has ellipsoidal, thick-walled, evenly coloured conidia without a sheath (Dai et al. 2017), which indicate that it does not belong in Aquapteridospora.
Pleurophragmium is an old genus that comprises over 40 epithets in Index Fungorum (2021). The sequence data of the type species P. bicolor is lacking, and Pleurophragmium was shown to be polyphyletic in Dai et al. (2017). Pleurophragmium is characterized by unbranched conidiophores, polyblastic, sympodial conidiogenous cells, and ellipsoidal to fusiform, or clavate, brown, 0–7-septate conidia with pointed bases (Ellis 1971, Ma et al. 2014). Morphologically, Aquapteridospora and Pleurophragmium are not congeneric. Although P. bambusinum clusters within Aquapteridospora, we do not synonymize P. bambusinum under Aquapteridospora due to its unusual morphological characteristics with other Aquapteridospora species. In addition, all Aquapteridospora species were found from freshwater (Yang et al. 2015, Luo et al. 2019), while P. bambusinum was collected from dead culms of bamboo (Dai et al. 2017). The new collections and sequences of P. bambusinum and type species P. bicolor are needed to reappraise their placements. We introduce a new species in Aquapteridospora, which is morphologically similar to the type species A. lignicola.
Type species: Aquapteridospora lignicola J. Yang, K.D. Hyde & Maharachch.
Other accepted species: Species Fungorum – search Aquapteridospora.
Figure 1 – Aquapteridospora aquatica (MFLU 17-1730, holotype). a, b Colonies on submerged wood. c–e Conidiophores with conidia. f Conidiogenous cell bearing young conidium.
g Conidiogenous cell. h Conidia. i, j Colony on PDA (left-front, right-reverse). Scale bars: c = 30 μm, d, e, h = 20 μm, f, g = 10 μm.
References
Ellis MB 1971 – Dematiaceous hyphomycetes. Commonwealth Mycological Institute, Kew, Surrey, England
Index Fungorum. 2021 – http://www.indexfungorum.org/names/Names.asp. (Retrieved on January 10, 2021)
Entry by
Wei Dong, Faculty of Agriculture and Food, Kunming University of Science & Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence for Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
Published online 15 February 2021