Zeloasperisporium
Zeloasperisporium R.F. Castañeda, Mycotaxon 60: 284 (1996).
Index Fungorum number: IF 27808; Facesoffungi number: FoF 08835, 8 morphological species (Species Fungorum 2022), 8 species with molecular data.
Saprobic on host. Sexual morph: Ascomata thyriothecial, circular, solitary and scattered, superficial, brown to dark brown; outer wall composed of ellipsoid to angular cells, arranged in parallel radiating lines from the center to the outer rim. Pseudoparaphyses not observed. Asci 8-spored, bitunicate, fissitunicate, globose to ovoid or clavate, apedicellate, with apical ocular chamber. Ascospores 2–3-seriate, obovoid to clavate, 2-celled, widest in upper cell, hyaline, smooth-walled. Mycelium internal to superficial, septate, pale brown, smooth or finely verruculose, thin-walled. Asexual morph: Macroconidiophores arising as lateral hyphal branches, erect, straight, subcylindrical or conical, tapering towards the apex, medium-brown, minutely verruculose; conidial proliferation sympodial, with one to several subdenticulate to flat conidiogenous loci, mostly crowded at the apex, protuberant; conidial scars thickened-refractive. Macroconidia solitary, straight to curved, fusiform, tapered towards the apex, septate, pale to medium brown, verruculose; at times forming a globose, apical mucoid appendage; base truncate with a protruding scar, which is somewhat thickened and darkened-refractive. Micronematous synasexual morph: Conidiogenous cells short-cylindrical, brown, finely verruculose, as lateral pegs on hyphae, with minute apical scars. Microconidia obovoid, aseptate, brown, finely verruculose (adapted from Crous et al. 2015).
Type species: Zeloasperisporium hyphopodioides R.F. Castañeda
Notes: No familial rank was designated for Zeloasperisporium and it was placed in genus incertae sedis. Zeloasperisporium hyphopodioides was isolated from sterilized leaves of Bucida palustris in Cuba (Castañeda et al. 1996). The type culture of Zeloasperisporium hyphopodioides was deposited at CBS as “Fusicladium hyphopodioides”. Crous et al. (2007) re-examined this culture and described the fungus as having short appressorium, inflated hyphopodia with slightly warted to lobed apices and mentioned that these might be conidiogenous cells of a synasexual morph forming a second conidial type. Zeloasperisporium hyphopodioides (at that time known as “Fusicladium hyphopodioides”) also had hyaline, unthickened and smooth conidial tips, mucoid appendages discernible as a thickened frill (Castañeda et al. 1996). These morphological characters differ from similar genera such as Fusicladium, Asperisporium and Passalora. Crous et al. (2007) provided sequence data of Z. hyphopodioides and accepted Zeloasperisporium in Venturiaceae based on phylogenetic analysis of LSU sequence data. Cheewangkoon et al. (2009) introduced the second species Z. eucalyptorum from leaves of Eucalyptus tectifica in Australia. Crous et al. (2015) added Z. cliviae from leaves of Clivia sp. and introduced Zeloasperisporiaceae to accommodate Zeloasperisporium and another genus Neomicrothyrium based on LSU and ITS sequence data. Hongsanan et al. (2015) added two new species Zeloasperisporium ficusicola and Z. wrightiae and synonymized Neomicrothyrium under Zeloasperisporium based on morphology of the sexual and asexual morphs and phylogenetic analyses of LSU and SSU sequence data. Zeloasperisporium is morphologically and phylogenetically a strongly supported and type genus of Zeloasperisporiaceae. Molecular markers available for Zeloasperisporium are ITS, LSU and SSU.
Recent News
Recent paper to be publishedRecent Genus
NothocladosporiumPhillipsiella
Curreya
Recent Species
Nothocladosporium syzygiiPhillipsiella atra
Curreya conorum
