Pleosporales » Thyridariaceae

Liua

Liua Phookamsak & K.D. Hyde, in Phookamsak et al., Fungal Diversity: 10.1007/s13225-019-00421-w, [71] (2019).

 Index Fungorum number: IF 556175; Facesoffungi number: FoF 05709, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.

Saprobic on Lonicera maackii. Sexual morph: Unknown. Asexual morph: Coelomycetous. Conidiomata pycnidial, scattered, solitary, immersed, slightly raised, visible as small black dot on host surface, uniloculate, globose to subglobose, glabrous, dark brown to black, ostioles central, apapillate, with pore-like opening. Conidiomata walls thin-walled, of equal thickness, composed of 3–5 cell layers, of flattened, brown to dark brown, pseudoparenchymatous cells, arranged in a textura angularis to textura prismatica. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic, phialidic, discrete, determinate, ampulliform to cylindrical, unbranched, aseptate, occasionally 1–2-septate, hyaline, smooth, arising from the inner cavity of the conidioma wall. Conidia phragmosporous to muriform, dark brown, oblong to ellipsoidal, or obovoid, (2–)3-transversely septate, with (0–)3 longitudinal septa, slightly constricted at the septa, smooth-walled (adapted from Phookamsak et al. 2019).

Type species: Liua muriformis Phookamsak, H.B. Jiang & K.D. Hyde

Notes: Liua is characterised by pycnidial conidiomata, conidiomatal walls comprising pseudoparenchymatous cells, arranged in a textura angularis to textura prismatica. holoblastic, phialidic conidiogenous cells and phragmosporous to muriform conidia. In the phylogenetic analyses of Phookamsak et al. (2019), L. muriformis clustered with two Thyridariella species in Thyridariaceae. Liua is morphologically and phylogenetically a distinct genus in Thyridariaceae. Molecular markers available for Liua are ITS, LSU, SSU, RPB2 and TEF-1.

 

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