Fungalpedia – Note 855, Niesslia
Niesslia. Auersw.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1 j–l
Classification: Niessliaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on wood, leaves or stems. Sexual morph: Ascomata perithecial, solitary or gregarious, superficial, sometimes sitting on a subiculum, globose to subglobose, or collapsing as cupuliform, brown or black, membranaceous, surrounded by brown to black setae, ostioles inconspicuous, periphysate. Peridium composed of membranaceous, yellow or brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, cylindrical to clavate, pedicellate, apex rounded or blunt, apical ring indistinct or absent, evanescent. Ascospores uni- or bi-seriate or overlapping, hyaline, ellipsoidal, cylindrical to fusiform, straight or curved, usually 1-septate, smooth-walled, guttulate. Asexual morph: Hyphomycetous. Conidiophores mononematous, macronematous, hyaline, unbranched. Conidia formed in chains or oval to ellipsoidal, 0–1-septate, hyaline, smooth-walled, guttulate (adapted from Gams et al. 2019).
Notes – Niesslia was introduced by Auerswald (1869) for N. chaetomium and it is characterized by spiny ascomata, ellipsoidal ascospores and acremonium-like asexual morph (Gams et al. 2019). Gams et al. (2019) clarified the affinities of Niesslia species by reviewing the authentic specimens. Several Niesslia species were sequenced (Crous et al. 2019a, Gams et al. 2019, Vu et al. 2019), but there is no molecular data available about the type N. chaetomium. In this study, species of Niesslia are scattered in Niessliaceae.
Type species: Niesslia chaetomium (Ces. & De Not.) Auersw., in Gonnermann & Rabenhorst, Myc. Europ., Abbild. Sämmtl. Pilze Eur. 5-6: 30 (1869).
Other accepted species: Species Fungorum – search Niesslia.
Figure 1 – Niesslia exosporioides: a–i (PRM-717659). a Material. b–c Ascomata on the host. d Peridium. e Septate seta. f–i Ascospores; Niesslia chaetomium: j–l (redrawn from Corda 1838). j Ascoma. k ascus. l Ascospores; Myrtacremonium eucalypti: m (redrawn from Crous et al. 2017). m Conidiophores and conidia; Paraniesslia tuberculata: n–o (redrawn from Tsui et al. 2001). n Ascus. o Ascospores. Scale bars: b–c = 500 µm, n = 50 µm, d, m = 20 µm, e, o = 10 µm, f–i = 5 µm.
References
Auerswald B. 1869 – Synopsis pyrenomycetum europaeorum. In: Gonnerman W, Rabenhorst GL (eds). Mycologia Europaea 5–6, 1–30.
Entry by
Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China
Published online 14 September 2021