Fungalpedia – Note 804, Neotrotteria
Neotrotteria Sacc.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Nitschkiaceae, Coronophorales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on decorticated wood. Sexual morph: Subiculum extensive, forming large and dense patches, composed of densely clustered, abundant, brown to black, septate, branched, spinulose hyphae with dichotomously branched, tapering ends. Ascomata superficial, collabent, cupulate, turbinate, tuberculate, scattered, black, carbonaceous, lacking ostioles, surrounded by rigid, straight, tapering setae. Peridium centrum with an obconical Quellkörper, comprising three layers, outer layer composed of carbonaceous, black tissues; middle layer composed of membranaceous, olivaceous to brown cells of textura angularis, Munk pores present; inner layer composed of membranaceous, hyaline cells of textura prismatica. Asci multi-spored, unitunicate, cylindrical to clavate, evanescent. Ascospores irregularly arranged, hyaline, allantoid to oval, slightly curved, smooth-walled, aseptate, mostly with guttules. Asexual morph: Undetermined.
Notes – The monotypic Neotrotteria was introduced by Saccardo (1918) and typified by N. pulchella in having carbonaceous ascomata with an obconical Quellkörper and clavate asci with numerous spores. These characters were considered similar to Acanthonitschkea (Nitschkiaceae), thus, N. pulchella was transferred as A. pulchella (Nannfeldt 1975, Nannfeldt & Santesson 1975). Subsequently, Mugambi & Huhndorf (2010) analyzed LSU sequence data and found that this species is basal to other Scortechiniaceae species. In this study, Neotrotteria is morphologically similar to genera in Scortechiniaceae that have cupulate ascomata with Quellkörper, however, phylogenetically, this genus nests in Ceratostomataceae based on LSU sequence (83%ML, not show) and multi-gene analyses (68%ML). Therefore, Neotrotteria has an existence between Ceratostomataceae and Scortechiniaceae. However, we place Neotrotteria in Ceratostomataceae based on our phylogenetic result.
Type species: Neotrotteria pulchella Sacc., Bulletino dell’orto Botanico della R. Universitá di Napoli 6: 45 (1921) [1918].
Other accepted species: Species Fungorum – search Neotrotteria.
Figure 1 – Neotrotteria pulchella: (IMI-354793). a Ascomata on decorticated wood. b–c Ascomata. d–e Ascomata cross section. f Quellkörper. g Peridium (arrow indicates Munk pores between cells). h Seta. i Hypha with dichotomously branched end. j–k Asci. l Ascospores. Scale bars: b = 2 mm, c = 500 µm, d–e = 200 µm, f = 100 µm, g–i = 50 µm, j–k = 20 µm, l = 10 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