Soloacrosporiella
Soloacrosporiella Crous & M.J. Wingf., Persoonia 34: 183 (2015).
Index Fungorum number: IF 812420; Facesoffungi number: FoF 12484, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Mycelium consisting of hyaline, smooth, septate, branched hyphae. Setae erect, solitary, flexuous, distributed throughout the colony, foot cell swollen or T-cell lacking rhizoids, stipe brown, smooth, multiseptate, apex obtusely rounded. Sexual morph: Unknown. Asexual morph: Conidiophores erect, solitary, arising from superficial hyphae, subcylindrical, pale brown, smooth, straight to flexuous. Conidiogenous cells integrated, terminal or intercalary, holoblastic, polyblastic, proliferating sympodially, subcylindrical, pale brown, smooth; loci slightly thickened and darkened. Conidia in branched chains, pale brown, smooth, guttulate, fusoid-ellipsoid to subcylindrical. Ramoconidia fusoid ellipsoid, septate, base obtusely rounded, apex with 1–3 sympodial loci that are slightly thickened and darkened. Conidia in chains of up to 20, acropetal in development, fusoid-ellipsoid, uniseptate, frequently slightly constricted at septum, loci thickened and darkened (adapted from Crous et al. 2015).
Type species: Soloacrosporiella acaciae Crous & M.J. Wingf.
Notes: Soloacrosporiella is characterised by erect, solitary, subcylindrical, pale brown conidiophores arising from superficial hyphae, guttulate, fusoid-ellipsoid to subcylindrical conidia, and fusoid-ellipsoid, septate ramoconidia. Soloacrosporiella differs from Soloacrospora in having more intricate arrangement of conidia, formed in branched chains with ramoconidia and terminal conidia. Soloacrosporiella also has conidiogenous loci and slightly thickened and darkened conidial hila which are absent in Soloacrospora (Castañeda Ruiz et al. 1997). In the phylogenetic analysis of Crous et al. (2015) based on LSU sequence data, Soloacrosporiella was closely related to Neocladophialophora. Soloacrosporiella differs from Neocladophialophora in forming colonies with several brown setae, produces well-defined conidiophores and ramoconidia, which are lacking in Neocladophialophora. Holotype and ex-type cultures are available as CBS H-22223 and CPC 24871, respectively. LSU and ITS sequence data are available for Soloacrosporiella. Wijayawardene et al. (2017, 2020) listed Soloacrosporiella in Dothideomycetes genera incertae sedis.
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