Chaetosphaeriales » Chaetosphaeriaceae » Dinemasporium

Dinemasporium nelloi

Dinemasporium nelloi W.J. Li, Camporesi & K.D. Hyde, in Liu et al., Fungal Diversity: [18] (2015)

 

 

Saprobic on dead stems of Dactylis glomerata, forming conspicuous, rounded to irregular, black, conidiomata. Sexual morph: undetermined. Asexual morph: coelomycetous. Conidiomata 250–350 µm diam., 100–200 µm high, pycnidial, superficial, erumpent, cupulate when dry, solitary, scattered or gregarious, black, with stroma cells of textura angularis at the base and a lateral excipulum of textura porrecta or textura intricata of pale to dark brown cells. Setae divergent, stiff, brown, smooth-walled, septate, tapering towards an acute apex. Conidiophores cylindrical, septate, smooth, thick-walled, hyaline, arising from basal and periclinal wall cells. Conidiogenous cells 10–15 × 1.5–3.5 µm, phialidic, cylindrical, hyaline, smooth-walled, tapering toward the apex. Conidia 10–20 × 2.5–3.5 µm (= 15 × 3 µm; n=20), blastic-phialidic, unicellular, allantoid or lenticular, guttulate, hyaline, smooth-walled, with a single unbranched setula at each end; setula 5–15 × 0.5–1.5 µm.

 

Material examined: Italy, Province Forlì-Cesena, Castrocaro Terme, Converselle, on dead stems of Dactylis glomerata (Poaceae), 1 December 2012, Erio Camporesi, IT934 (MFLU 14–0811, holotype), ex-type living culture, MFLUCC 13–0482, (KUN, HKAS 83970, isotype).

 

Dinemasporium nelliana (MFLU 14–0811, holotype) a Specimen. b, c Appearance of black conidiomata on the host surface. d Vertical section of conidioma. e Section of peridium. f Conidiomatal seta. g–i Conidiogenous cells and developing conidia. j–n Conidia. Scale bars: b = 500 µm, c = 100 µm, d = 50 µm, e = 10 µm, f = 20 µm, g–n = 5 µm.

 

 

 

References:

 

Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.

 

 

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