Amarenographium ammophilae
Amarenographium ammophilae Wanas., Camporesi, Wijayaw. & K.D. Hyde, in Wijayawardene et al., Fungal Diversity: 10.1007/s13225-016-0360-2, [35] (2016)
Index Fungorum number: IF 551944; Facesofungi number: FoF 01895
Etymology: Named after the host genus.
Holotype: MFLU 16-0240
Saprobic on various substrates on Ammophila arenaria. Sexual morph: Undetermined. Asexual morph: Conidiomata 120–150 μm diam., 90–120 μm high, pycnidial, stromatic, solitary, immersed in the host, uni-loculate, globose to subglobose, dark brown to black, ostiolate, apapillate. Conidiomata wall composed of thin-walled, blackish to dark brown-walled cells of textura angularis. Conidiophores reduced to conidiogenous cells. Conidiogenous cells holoblastic, phialidic, ampulliform to cylindrical, unbranched, septate, hyaline, smooth. Conidia 30–50 × 12–18 μm (x̄ = 39.9 × 14.2 μm, n = 50), clavate, ellipsoid, ovoid or fusoid, apex rounded, base acute or truncate, muriform, constrictions at septa, yellowish brown to brown, with apical gelatinous sheath, and basal gelatinous sheath.
Culture characteristics: Colonies slow growing, reaching 30mm diam., after three weeks, circular, olivaceous-grey, spreading, flattened, felt-like, sparse, aerial, surface, smooth with crenate edge, filamentous; reverse irongrey. Sporulating after 4 weeks.
Material examined: Italy, Ravenna [RA] Province, Lido di Dante, dead stems of Ammophila arenaria (Poaceae), 8 December 2014, Erio Camporesi, IT 2293 (MFLU 16-0240, holotype); ex-type living cultures MFLUCC 16-0296.
GenBank:
Notes: Farr and Rossman (2016) reported Amarenographium metableticum from Ammophila arenaria (conidial dimensions: 22–30 × 9–13 μm fide Eriksson 1982). Our collection has larger conidia, thus we introduce a new species based on host association and morphology (Wijayawardene et al. 2016).
Figure x. Amarenographium ammophilae (holotype). a Conidiomata on host material. b Vertical section through a conidioma. c Conidioma wall. d–f Mature and immature conidia attached to conidiogenous cells. g Germinated conidium. h–n Mature and immature conidia. Scale bars: b=50 μm, c–f, h–n=10 μm, g=20 μm
References:
Eriksson O 1982 – Notes on ascomycetes and coelomycetes from NW Europe. Mycotaxon 15, 189–202.
Wijayawardene NN, Hyde KD, Wanasinghe DN, Papizadeh M et al. 2016 – Taxonomy and phylogeny of dematiaceous coelomycetes. Fungal diversity 77, 1–316.
Last Update: 07 April 2021