Muyocopronales » Muyocopronaceae » Setoapiospora

Setoapiospora thailandica

Setoapiospora thailandica Mapook & K.D. Hyde, in Hyde et al., Fungal Diversity 100: 135 (2020)

Index Fungorum number: IF556906         Facesoffungi number: FoF06794


Sexual morph: Ascomata 270–290 µm high × 390–415 µm diam. ( = 280.5 × 400 µm, n = 5), superficial to semi-immersed, solitary or scattered, carbonaceous, solitary or scattered, appearing as dark brown to black spots, with a poorly developed basal layer and an irregular margin. Ostiole central, with external dark brown setae. Peridium 25–50(–60) µm wide, comprising dark brown cells of textura epidermoidea. Hamathecium comprising 1–2 µm wide, cylindrical to filiform, septate, pseudoparaphyses. Asci 85–160 × 13–24 µm ( = 123 × 17 µm, n = 20), 8-spored, bitunicate, cylindrical, pedicellate, straight or slightly curved, with an ocular chamber. Ascospores 20–27 × 10–13 µm ( = 25 × 11 µm, n = 25), 1-seriate, ellipsoid to broadly fusiform, hyaline, 1-septate, constricted at the septum, with a small lower cell and a large upper cell, widest at the centre and tapering towards ends, granular. Asexual morph: Undetermined.



Culture characteristics: Ascospores germinating on MEA within 24 h at room temperature and germ tubes produced from the apex. Colonies on MEA irregular, initially mycelium white, slightly flattened, filamentous, cultures grayish to light brown in old, flattened on surface, pale brown to brown in reverse from the centre of the colony, creamy white at margin


Host and habitat: on dead branches of wood (Hyde et al. 2020)


Known distribution: Thailand


Material examined: THAILAND, Chiang Rai Province, Huai Kang Pla waterfall, on dead branches of wood, 19 June 2015, A. Mapook, HKP1 (MFLU 20-0049, holotype), ex-type culture MFLUCC 17-1426.


GenBank numbers: ITS: MN638862, LSU: MN638847, SSU: MN638851, TEF1-α: MN648731.


Notes: In a BLASTn search of NCBI GenBank, the closest matches of the ITS sequence of Setoapiospora thailandica (MFLUCC 17-1426, ex-holotype) with 81.36% similarity, was to Mycoleptodiscus terrestris (strain IMI 159038, MK487755). The closest matches with the LSU sequence with 93.74% similarity, was to Mycoleptodiscus terrestris (strain CBS 231.53, MK487730), while the closest matches with the SSU sequences with 98.52% similarity, was to Neocochlearomyces chromolaenae (strain BCC 68250, NG_065766).




Figure X.  Setoapiospora thailandica (MFLU 20-0049, holotype). a, b Appearance of ascomata on substrate. c Squash mounts showing ascomata. d Section through of ascoma. e Setae. f Peridium. g Pseudoparaphyses. h, i asci. j–m Ascospores. Scale bars: a = 500 µm, b = 200 µm, d = 100 µm, c, h, i = 50 µm, e, f, j–m = 10 µm, g = 5 µm




Hyde KD, Dong Y, Phookamsak R, Jeewon R, Bhat DJ, Jones EB, Liu NG, Abeywickrama PD, Mapook A, Wei D, Perera RH (2020) Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa.


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"The future of specialist fungi in a changing climate: baseline data for generalist and specialist fungi associated with ants Rhododendron species and Dracaena species"

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