Parafuscosporella lignicola L. Li &amp; R. J. Xu 2023, sp. nov.
Creators: name: Li, Lu
name: Xu, Rong-Ju
name: Luo, Zong-Long
name: Zhao, Qi
name: Cheewangkoon, Ratchadawan
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Fungi
Ascomycota
Sordariomycetes
Fuscosporellales
Parafuscosporella
Parafuscosporella lignicola

description: <i>Parafuscosporella lignicola</i> L. Li &amp; R.J. Xu, <i>sp. nov</i>. FIGURE 3 <i>Index Fungorum number</i>: IF559931, <i>Facesoffungi number</i>: FoF 12889 <i>Etymology</i>: Referring to the fungus dwelling on wood. <i>Holotype</i>: MFLU22-0101 <i>Saprobic</i> on decaying twigs from freshwater habitats. <b>Asexual morph:</b> <i>Colonies</i> on natural substratum sporodochial, scattered, black without covering. <i>Mycelium</i> mostly superficial, partially immersed, composed of branched, smooth-walled, septate, hyaline to light brown hyphae. <i>Conidiophores</i> micronematous, mononematous, compact, septate, mostly subglobose to ellipsoidal in moniliform. <i>Conidiogenous cells</i> 11–19 × 7–9 μm (<i>x</i> = 14× 8 μm, n =20), holoblastic, monoblastic, integrated or discrete, terminal, ellipsoidal or cylindrical, hyaline, smooth-walled, sometimes with continuous proliferations. <i>Conidia</i> 15–25 × 8–13 μm (<i>x</i> = 22 × 11 μm, n =40) acrogenous, solitary, ellipsoidal, obovoid or pyriform, with a septum near the base, olivaceous when young, dark brown to black when mature, pale brown at basal cell, truncate at base, smooth-walled. <b>Sexual morph:</b> Undetermined. <b>Culture characteristics:</b> Conidia germinating on PDA within 48h. Germ tubes produced from the basal cell. Colonies reaching 30 mm at room temperature in dark for one month, on PDA medium, flat, velutinous, light grey from the center then becoming brown towards surface, sparse mycelium on the surface, irregular margin. Sporulated conidia in cultures after 10 days. <i>Conidiophores</i> micronematous, branched, sometimes reduced to a single conidiogenous cell, hyaline to pale brown. <i>Conidiogenous cells</i> monoblastic, holoblastic, integrated, cylindrical, hyaline to pale brown, smooth-walled. <i>Conidia</i> 10–25 × 8–14 μm (<i>x</i> = 17 × 11 μm, n=20), acrogenous or pleurogenous, globose to subglobose, olivaceous when young, medium brown to dark brown when mature, sometime with continuous proliferations (FIGURE. 4). <b>Known distribution:</b> Thailand <b>Material examined</b>: Thailand, Nang Lae, Mueang Chiang Rai, Chiang Rai Province, (99°52′52.93″E, 20°3′2.52″N), saprobic on decaying wood submerged in a freshwater stream, 18 July 2020, R.J Xu, MD-5 (MFLU22- 0101 <b>holotype</b>), ex-living culture MFLUCC 23-0047. Thailand, Mushroom Research Center (M.R.C.), Chiang Mai Province, (98°46′44.28″E, 19°7′7.62N ″), unidentified decaying wood in freshwater habitat, 13 July 2020, R.J Xu, MD-5-3 (MFLU22-0102), living culture MFLUCC 23-0048. <b>Notes:</b> Morphologically, <i>Parafuscosporella lignicola</i> is similar to <i>P. aquatica</i>, <i>P. moniliformis</i>, <i>P. mucosa</i>, <i>P. nilotica, P. obovate</i> and <i>P. pyriformis</i> in having micronematous, mononematous conidiophores; monoblastic, integrated, globose, subglobose, ellipsoidal conidiogenous cells; subglobose, ellipsoidal or pyriform, dark brown to black conidia. However, <i>P. lignicola</i> has moniliform, ellipsoidal conidiophores, ellipsoidal or cylindrical conidiogenous cells and the smallest conidia in the genus (Boonyuen <i>et al</i>. 2016, Yang <i>et al</i>. 2016, 2017, Boonmee <i>et al</i>. 2021). Phylogenetic analysis also shows that <i>Parafuscosporella lignicola</i> has its own distinct lineage compared to other species of <i>Parafuscosporella</i> and form a sister group with <i>P. ellipsoconidiogena</i> (FIGURE 2). However, <i>P. ellipsoconidiogena</i> can be distinguished from <i>P. lignicola</i> by having doliiform, fusiform conidiophores, fusiform conidiogenous cells and larger conidia (27.5–33 × 15–20 μm <i>vs.</i> 15–25 × 8–13 μm) (Boonyuen <i>et al</i>. 2021).
description: Published as part of <i>Li, Lu, Xu, Rong-Ju, Luo, Zong-Long, Zhao, Qi &amp; Cheewangkoon, Ratchadawan, 2023, Parafuscosporella lignicola sp. nov. (Fuscosporellaceae), from a freshwater habitat in northern Thailand, pp. 141-152 in Phytotaxa 597 (2)</i> on pages 145-148, DOI: 10.11646/phytotaxa.597.2.4, http://zenodo.org/record/7929317
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