Muyocopronales » Muyocopronaceae » Muyocopron

Muyocopron lithocarpi

Muyocopron lithocarpi Mapook, Boonmee & K.D. Hyde,

in Mapook et al., Phytotaxa 265(3): 235 (2016)

Index Fungorum number: -         Facesoffungi number: -

 

Sexual morph: Ascostromata dry, black, circular, raised to umbonate on the host surface, without a subiculum, easily removed from the host, clustered, gregarious, or in groups of 2–3 locules, ostiolate. Ascomata 55–110 μm high, 175–380 μm diam., clustered, gregarious or in groups, superficial, black, with a central irregular ostiole. Peridium 10–27 μm wide, slightly thick-walled of unequal thickness, poorly developed at the base, slightly thick at the sides towards the apex, comprising two types of cell layers; outer layer composed of black carbonaceous, brittle cells, inner layer composed of hyaline to brown, pseudoparenchymatous cells of textura angularis to textura prismatica. Hamathecium comprising numerous, 2–3 μm wide, filiform, septate, anastomosed pseudoparaphyses. Asci (41–)47–

78(–85) × (18–)21–28(–29) μm (x̅ = 59.6 × 24.5 lm, n = 45), 8-spored, bitunicate, ovoid to obclavate, or ampulliform, short pedicellate, apically rounded, apex thick with small ocular chamber. Ascospores (12–)14–19(–20) × (7–)8–10(–12) μm (x̅ = 17.2 × 9.8 μm, n = 60), overlapping 1–3-seriate, hyaline, subglobose to obovoid, with obtuse ends, 1-celled, rough-walled with small granules, and 1–3 large guttules. Asexual morph: Undetermined.

 

 

Known hosts: Lithocarpus lucidus, Peltophorum sp. Cercis chinensis

 

Known distribution: Thailand; Guizhou, China

 

Material examined: CHINA, Yunnan Province, Xishuangbanna, Jinghong, Nabanhe, on dead stems of herbaceous plant, 21 November 2015, R. Phookamsak, XB016 (KUN-HKAS 102243).

 

GenBank Accession No: LSU: MK447738, SSU: MK447740.

 

Notes: In molecular phylogenetic analysis our isolate clusters with Muyocopron lithocarpi Mapook et al. The morphology of our isolate is similar to M. lithocarpi described by Mapook et al. (2016), although our isolate has larger asci than in the original description (41–85 × 18–29 μm versus 45–65 × 15–28 μm) (Mapook et al. 2016). The species was collected from herbaceous plant in Yunnan, China for the first time.

Figure X. Muyocopron lithocarpi (KUN-HKAS 102243). a Ascomata on host substrate. b Squash mounts showing upper wall of ascoma. c Section through the ascostroma. d Peridium. e Pseudoparaphyses. f– j Development of asci. k–p Ascospores. Scale bars c = 200 μm, f–j = 30 μm, b, d = 20 μm, e, k–p = 10 μm.

Reference:

 Phookamsak R, Hyde KD, Jeewon R, Bhat DJ, et al. (2019) Fungal diversity notes 929–1035: taxonomic and phylogenetic contributions on genera and species of fungi. Fungal Diversity (2019) 95:1–273

 

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