Diaporthales » Coryneaceae » Coryneum

Coryneum pruni

Coryneum pruni Wijayaw., Camporesi, McKenzie & K.D. Hyde, in Wijayawardene et al., Fungal Diversity: 10.1007/s13225-016-0360-2, [96] (2016)

Index Fungorum number: IF 551770; Facesofungi number: FoF 01465

Etymology: Named after the host genus.

Holotype: MFLU 15-3448

Endophytic or saprobic on twigs and branches of Prunus sp. Sexual morph: Undetermined. Asexual morph: Conidiomata 180–240 μm diam., 115–185 μm high, acervulus, sporodochial-like at maturity, solitary, scattered, sub-epidermal, erumpent at maturity, dark brown to black. Conidiomata wall composed of thin-walled, dark brown cells of textura angularis. Conidiophores 18.5–23 × 3.5–5 μm, long, cylindrical, hyaline, septate, branched at the base, smooth. Conidiogenous cells holoblastic, annellidic, simple, integrated, determinate, hyaline, extended at the apices. Conidia 14–23× 5.5–9 μm (x̄ =23.79 × 7.84 μm, n = 20), narrow to broadly fusiform, straight or curved, 4–5-transversely distoseptate, truncate at the base, rounded at the apex, with apical and 2–3 median cells, brown to pale brown, 2–3 basal cells, hyaline, guttulate, smooth-walled.

Material examined: Material examined: Italy, Arezzo Province, Madonna di Montalto - Stia, on branch of Prunus sp. (Rosaceae), 24 December 2013, E. Camporesi, NNW IT 1593 (MFLU 15-3448, holotype); (HKAS92553, isotype).

GenBank:

Notes: Coryneum nigrellum Lacroix was reported from Prunus persica in France, but, Sutton (1975) mentioned that the type material was not available in Paris herbarium for examination and therefore did not include C. nigrellum as an accepted species. Hence, we introduce our collection as a new species, which is distinct in morphology from known species (Wijayawardene et al. 2016).

 

Figure x. Coryneum pruni (holotype). a, b Conidiomata on stems of Prunus sp. c Vertical section of matured conidioma. d, e Different stages of conidiogenesis. f–i Conidia attached to conidiophores. j–o Conidia. Scale bars: c=70 μm, d–h=20 μm, j–o=15 μm.

 

 

References:

 

Sutton BC 1975 – Coelomycetes V. Coryneum. Mycol Pap 138, 1–224.

Wijayawardene NN, Hyde KD, Wanasinghe DN, Papizadeh M et al. 2016 Taxonomy and phylogeny of dematiaceous coelomycetes. Fungal diversity 77, 1316.

 

Last Update: 09 April 2021

 

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