Edenia
Edenia M.C. González, A.L. Anaya, Glenn, Saucedo & Hanlin, in González et al., Mycotaxon 101: 254 (2007).
Index Fungorum number: IF 510872; Facesoffungi number: FoF 00543, 2 morphological species (Species Fungorum 2022), 2 species with molecular data.
Saprobic on decaying twigs, pathogenic to human and plants. Sexual morph: Ascomata perithecial, scattered, immersed, coriaceous, globose to subglobose, unilocular, papillate, with centrally ostiolar necks, periphysate. Peridium comprises two layers, outer layer composed of textura porrecta and inner layers composed of pale brown textura angularis. Hamathecium narrow towards apical end, filamentous, septate, unbranched, pseudoparaphyses, embedded in a gelatinous matrix. Asci 8-spored, bitunicate, fissitunicate, clavate, apically obtuse with a distinct ocular chamber, short pedicellate. Ascospores overlapping 1–2- seriate, initially hyaline, becoming brown to reddish brown with hyaline to pale brown end cells, with mammiform apices, broadly fusiform to ellipsoidal, uniseptate, slightly constricted when young, large guttules in each cell, verruculose. Asexual morph: Pycnidia on culture plates, globose, centrally verruculose, ostiolate necks, with long brown spinous setae, setae covered below with brown mycelium, outer textura subglobosa and inner textura intricata. Conidia hyaline, fusiform, obtuse ends, smooth-walled (adapted from Hongsanan et al. 2020a). Asexual morph (adapted from González et al. 2007): Colonies on PDA, fast growing, at first whitish, later becoming pinkish white, reverse reddish-brown to brown, velvety to floccose. Mycelium sterile, asexual and sexual spores and sporiferous structures unknown. Hyphae hyaline, thin-walled, smooth, septate, frequently developing 90o angle branching, intertwining and forming rope-like strands and coils.
Type species: Edenia gomezpompae M.C. González, Anaya, Glenn, Saucedo & Hanlin
Notes: Edenia gomezpompae was initially isolated as an endophytic hyphomycete from leaves of Callicarpa acuminata in Mexico. Edenia was described as hyaline, thin-walled hyphae intertwining and forming rope-like strands and coils. González et al. (2007) provided a sequence of ITS region and placed Edenia in Pleosporaceae with no phylogenetic analysis support. Crous et al. (2009a) re-circumscribed Edenia by observing a specimen from symptomatic leaves of Senna alata in Philippines and selected this collection as an epitype of E. gomezpompae. Crous et al. (2009a) also observed a synasexual morph of E. gomezpompae in culture and described it as ‘pyronellea-like’. Edenia was previously known only by the hyphal morphology and lacked a definite morphological structure. Recently, Hongsanan et al. (2020a) reported the sexual morph of E. gomezpompae from India. The taxonomic placement of Edenia was confirmed in Phaeosphaeriaceae based on both morphology and phylogenetic analyses (Crous et al. 2009a, Hongsanan et al. 2020a). Molecular markers available for Edenia are ITS, LSU, SSU, BTUB, RPB2 and TEF-1.
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