Fungalpedia – Note 815, Neochaetosphaerella

 

Neochaetosphaerella Lar.N. Vassiljeva, S.L. Stephenson & Chernyshev

Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 t

Classification: Nitschkiaceae, Coronophorales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Saprobic on wood. Sexual morph: Subiculum composed of brown, septate, branched, terminal acuminate hyphae. Ascomata perithecial, gregarious, superficial, sitting in a subiculum, oval to subglobose, black, tuberculate, with spiny, septate setae, ostiolate. Peridium composed of brown cells of textura angularis. Paraphyses filiform, evanescent. Asci 8-spored, unitunicate, clavate, apex rounded, apical ring inconspicuous, with a short pedicel or sessile, evanescent. Ascospores bi-seriate to overlapping, broadly allantoid, brown, 3-septate, smooth-walled, guttulate. Asexual morph: Undetermined (adapted from Vasilyeva et al. 2012).

Notes – The monotypic Neochaetosphaerella is similar to Chaetosphaerella and Crassochaeta in having tuberculate, setose ascomata and its subiculum is similar to Scortechinia (Scortechiniaceae) with acuminate hyphae. However, Neochaetosphaerella has septate, brown ascospores whereas Chaetosphaerella and Crassochaeta have versicoloured ascospores and Scortechinia has aseptate hyaline ascospores (Vasilyeva et al. 2012). Neochaetosphaerella was initially placed in Coronophorales (Vasilyeva et al. 2012), and then Nitschkiaceae (Maharachchikumbura et al. 2015, Wijayawardene et al. 2020). However, Neochaetosphaerella does not have the hyaline ascospores of Nitschkiaceae. We transfer Neochaetosphaerella to Chaetosphaerellaceae based on the similar tuberculate ascomata, clavate asci and 3-septate ascospores pending molecular data.

Type species: Neochaetosphaerella thaxteriospora Lar.N. Vassiljeva, S.L. Stephenson & Chernyshev, in Vasilyeva, Chernyshev & Stephenson, Fungal Diversity 52(1): 192 (2012).

Other accepted species: Species Fungorum – search Neochaetosphaerella.

 

image

 

Figure 1 – Biciliosporina karwarensis: a–b (IMI-IMI324681, holotype); c–e (redrawn from Subramanian & Sekar 1990). a Material. b Collapsed ascomata on the host. c Sectional view of ascoma. d Asci. e Ascospores; Syspastospora parasitica: f (redrawn from Cannon & Hawksworth 1982). f Ascospores; Scopinella barbata: g–h (redrawn from Hawksworth 1975). g Ascus. h Ascospores; Loranitschkia viticola: i (redrawn from Vasilyeva et al. 2010). i Asci and ascospores; Botryola tetrasperma: j (redrawn from Batista et al. 1964). j Asci and ascospores; Setiferotheca nipponica: k–m (redrawn from Matsushima 1995). k Peridium with setae. l Asci. m Ascospores; Janannfeldtia karwarensis: n (redrawn from Subramanian & Sekar 1990). n Asci and ascospores; Vittatispora coorgii: o–q (redrawn from Chaudhary et al. 2006). o Ascoma. p Ascus. q Ascospores; Rhagadostomella gregaria: r–s (redrawn from Etayo 2002). r Ascospores. s Asci; Neochaetosphaerella thaxteriospora: t (redrawn from Vasilyeva et al. 2012). t Ascus and ascospores; Tortulomyces thailandicus: u (redrawn from Vasilyeva et al. 2013). u Ascus and ascospores. Scale bars: b = 500 µm, c, k, o = 200 µm, i = 50 µm, d, j, n, s–u = 20 µm, e, g, l, r = 10 µm, h, m, p–q = 5 µm, f = 2 µm.

 

References

Batista AC, Bezerra JL, Castrillon AL, da Matta EAF. 1964 – Novos Ascomycetos foliícolas e caulinares. Publicações do Instituto de Micologia da Universidade do Recife 431, 1–22.

Cannon PF, Hawksworth DL. 1982 – A re-evaluation of Melanospora Corda and similar Pyrenomycetes, with a revision of the British species. Botanical Journal of the Linnean Society 84(2), 115–160.

Chaudhary P, Campbell J, Hawksworth DL, Sastry KN. 2006 – Vittatispora, a new melanosporaceous genus from Indian soil. Mycologia 98(3), 460–467.

Etayo J. 2002 – Aportación al conocimiento de los hongos liquenícolas de Colombia. Bibliotheca Lichenologica 84, 1–154.

Hawksworth DL. 1975 – Chaetoceratostoma Turc. & Maffei, a genus to be rejected. Transactions of the British Mycological Society 64(3), 447–453.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2015 – Towards a natural classification and backbone tree for Sordariomycetes. Fungal Diversity 72, 199–301.

Matsushima T. 1995 – Matsushima Mycological Memoires 8. Matsushima Mycological Memoirs 8, 1–44.

Subramanian CV, Sekar G. 1990 – Coronophorales from India-a monograph. Kavaka 18, 19–90.

Vasilyeva L, Chernyshev A, Stephenson SL. 2010 – Pyrenomycetes of the Russian Far East 4: family Nitschkiaceae (Coronophorales, Ascomycota). Mycologia 102(1), 233–247.

Vasilyeva LN, Chernyshev AV, Stephenson SL. 2012 – Neochaetosphaerella thaxteriospora gen. et sp. nov. and Tympanopsis texensis sp. nov. (Coronophorales, Ascomycota) from Texas, USA. Fungal Diversity 52(1), 191–196.

Vasilyeva LN, Chernyshev AV, Stevenson SL, Hyde KD. 2013 – Tortulomyces thailandicus gen. et sp. nov. and Nitschkia siamensis sp. nov.(Coronophorales, Ascomycota) from northern Thailand. mycoscience 54(2), 110–115.

Wijayawardene NN, Hyde KD, Al-Ani LKT, Tedersoo L et al. 2020 – Outline of Fungi and fungus-like taxa. Mycosphere 11(1), 1060–1456.

 

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

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