Astrocystis bambusicola R. H. Perera &amp; K. D. Hyde, Fungal Diversity
Creators: name: Wu, You-Peng
name: Pi, Yin-Hui
name: Long, Si-Han
name: Lin, Yan
name: Long, Qing-De
name: Kang, Ji-Chuan
name: Kang, Ying-Qian
name: Shen, Xiang-Chun
name: Wijayawardene, Nalin N.
name: Zhang, Xu
name: Li, Qi-Rui
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Xylariales
Xylariaceae
Astrocystis
Astrocystis bambusicola

description: <i>Astrocystis bambusicola</i> R.H. Perera &amp; K.D. Hyde, Fungal Diversity 87: 173 (2017) (Fig. 5) MycoBank: MB552219 Saprobic on the surface of dead bamboo stalk, visible as black raised spots on the host. <b>Sexual morph</b>: <i>Stromata</i> erumpent, scattered, superficial, subglobose to dome-shaped, blackened, carbonaceous, with papillate ostioles, containing 1–3 ascomata, 0.20–0.73 mm diam., 0.13–0.20 mm high. <i>Perithecia</i> comprising black, fragile, carbonaceous tissue. <i>Asci</i> 119–132 × 8–11.5 μm (mean 124 × 9.6 μm, n = 30), 8-spored, unitunicate, cylindrical, with a short pedicel, persistent, apically rounded, with J+, square-shaped apical apparatus, blue staining in Melzer’s reagent, 3–4.5 μm (mean 3.2 μm, n = 30) high, 2.0–3.5 μm (mean 2.8 μm, n = 30) wide. <i>Ascospores</i> 18.0–26 × 6.5–11 μm (mean 20.8 × 8.0 μm, n = 30), uniseriate, ellipsoid, aseptate, brown to dark brown, guttulate, smooth-walled, with a germ slit slightly less than full spore-length, lacking appendages and sheath. <b>Asexual morph</b>: undetermined. <b>Specimens examined:—</b> CHINA. Guizhou Province: Tongren City, Fanjingshan Nature Reserve (27.544623°N, 108.454326°E), elev. 912 m, on dead bamboo culms, 10 October 2020, Q.R. Li 2020FJS35 (GMB0036, KUN-HKAS 112691; living culture, GMBC0036). <b>Culture characteristics:—</b> Ascospores germinated on PDA within 24 hours at 25 °C, colonies, dense but thinning towards the edge, edge irregular, white from above, reverse similar in colour. No conidia were observed on PDA or OA media. <b>Habitat/Distribution:—</b> Known to inhabit dead bamboo, China, Thailand. <b>Notes:—</b> Morphologically, <i>A. bambusicola</i> differs from <i>A. mirabilis</i> and <i>A. bambusae</i> by its superficial stromata, larger ascospores and smaller asci. Phylogenetic analyses of a combined ITS, RPB2, β-tubulin and α-actin sequences dataset shows that our strain GMB0036 clades with the type strain of <i>A. bambusicola</i> (MFLUCC 17-0127) with high statistical support (99% ML, 0.99 BYPP; Fig. 1). The new collection morphologically resembles <i>A. bambusicola</i>. Thus, we identify it as <i>A. bambusicola</i> which has been reported in Thailand (Hyde <i>et al.</i> 2017) and Yunnan, China (Hyde <i>et al</i>. 2019).
description: Published as part of <i>Wu, You-Peng, Pi, Yin-Hui, Long, Si-Han, Lin, Yan, Long, Qing-De, Kang, Ji-Chuan, Kang, Ying-Qian, Shen, Xiang-Chun, Wijayawardene, Nalin N., Zhang, Xu &amp; Li, Qi-Rui, 2021, Morphological and phylogenetic study of five species of Astrocystis and Collodiscula on bamboo, pp. 265-284 in Phytotaxa 522 (4)</i> on pages 276-280, DOI: 10.11646/phytotaxa.522.4.1, http://zenodo.org/record/5565846
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