Fungalpedia – Note 856, Nitschkiopsis
Nitschkiopsis. Nannf.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1
Classification: Niessliaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Lichenicolous. Sexual morph: Ascomata perithecial, solitary or scattered, semi-immersed to superficial, globose to subglobose, or collapsing as cupuliform, brown to black, with metallic iridescence, membranaceous, surrounded by two types of setae, ostiolate, periphysate. Setae oblong to cylindrical, hyaline, with swollen apex; conical, spinous, brown to dark brown. Peridium composed of membranaceous, pale brown to reddish brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci 8-spored, unitunicate, cylindrical, pedicellate, apex blunt, apical ring indistinct, evanescent. Ascospores uni- or bi-seriate, hyaline, ellipsoidal to oval, 0–1-septate, smooth-walled, guttulate. Asexual morph: Undetermined (adapted from Nannfeldt & Santesson 1975).
Notes – The monotypic Nitschkiopsis was introduced by Nannfeldt & Santesson (1975) for N. stictarum. This lichenicolous genus was initially related to Lasiosphaeriaceae and Nitschkiaceae (Nannfeldt & Santesson 1975). However, Tretiach (2002) transferred it as Niesslia stictarum and introduced another similar lichenicolous species, Nie. robusta. In this study, we found that Nitschkiopsis has perithecial ascomata with hyaline setae similar to Nie. nolinae; and spinous setae similar to Nie. chaetomium, differing from it in the possessing of ellipsoidal ascospores. Since Niesslia is polyphyletic, we accept the Nitschkiopsis with two kinds of setae as an independent genus in Niessliaceae pending molecular data.
Type species: Nitschkiopsis stictarum Nannf. & R. Sant., Svensk bot. Tidskr. 69(3): 322 (1975).
Other accepted species: Species Fungorum – search Nitschkiopsis.
Figure 1 – Nitschkiopsis stictarum: a, c, e, g–i, k–m, o–p, u (UPS-UPS:BOT:L-112114, holotype); b, d, f, j, n, r–t, w–z (S-F10356, Isotype); v (UPS-UPS:BOT:F-521855); q (UPS-UPS:BOT:F-521848). a–b Material. c–d Ascomata on Sticta ambavillaria. e–f Ascomata. g–h Ascoma cross section. i Ostiole with periphyses. j–k Peridium. l Conical seta. m–n Cylindrical setae. o–t Asci. u–z Ascospores. Notes: n, w–z stained in Congo red reagent. Scale bars: c–d = 100 µm, g–h = 50 µm, i, m–n = 20 µm, j–l, o–t = 10 µm, u–z = 5 µm.
References
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