Chaetomium

Fungalpedia – Note 1165, Chaetomium

 

Chaetomium Kunze

Citation when using this data: Hyde KD et al. 2020 (in prep.) – Fungalpedia, Ascomycota.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1

Classification: Chaetomiaceae, Sordariales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi

Chaetomium is the largest genus in Chaetomiaceae. The genus was reviewed by Maharachchikumbura et al. (2016b) and Wang et al. (2016a, b, 2019b). The genera Bommerella, Chaetomidium and Chaetomiopsis were proposed as synonyms of Chaetomium (Moustafa & Abdul-Wahid 1990, Doveri 2008a, Wang et al. 2016a, b, 2019b). Chaetomium contains more than 150 species (Wijayawardene et al. 2017a); they grow on soil and decaying twigs (Wang et al. 2016a, b, Zhang et al. 2017b). Wang et al. (2016a, b, 2019b) described novel Chaetomiaceae taxa collected from indoor environments, which were described as new species. Many new species, collected from soil, were published by (Zhang et al. 2017b). The genus is characterised by globose, ellipsoid to ovate or obovate, ostiolate ascomata with or lacking ostioles, hypha-like, flexuous, undulate, coiled to simply or dichotomously branched ascomatal hairs, clavate or fusiform, evanescent asci, and limoniform to globose, bilaterally flattened ascospores. Asexual morphs, if produced, are acremonium-like (Wang et al. 2016a).

Type species: Chaetomium globosum Kunze.

Other accepted species: Species Fungorum – search Chaetomium.

 

 

Figure 1 – Chaetomium globosum (a, d, f-h redrawn from Wang 2016b and (https://www.canada.ca/content/dam/eccc/documents/pdf/pded/chaetomium-globosum/2018-02-20- C.%20Globosum-EN.pdf), b, c, e redrawn from Whiteside 1961). a Ascoma. b, c Sections of ascomata. d Asci. e Paraphyses. f Ascomal hair. g Ascospores. h Peridium. Scale bars: a = 100 µm, d, h = 10 µm, f, g = 5 µm, b = × 240, c = × 300, e = × 1000.

 

References

Doveri F. 2008a – “Aggiornamento sul genere Chaetomium con descrizione di alcune specie coprofile, nuove perl” Italia – “An Update on the Genus Chaetomium with Descriptions of Some Coprophilous Species, New to Italy.”. Pagine di Micologia 29, 1–60.

Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016b – Families of Sordariomycetes. Fungal Diversity 79, 1–317.

Moustafa AF, Abdul-Wahid OA. 1990 – Chaetomiopsis, a new perithecial ascomycete genus from Egyptian soils. Mycologia 82, 129–131.

Wang XW, Houbraken J, Groenewald JZ, Meijer M et al. 2016a – Diversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environments. Studies in Mycology 84, 145–224.

Wang XW, Lombard L, Groenewald JZ, Li J et al. 2016b – Phylogenetic reassessment of the Chaetomium globosum species complex. Persoonia-Molecular Phylogeny and Evolution of Fungi 36, 83–133.

Wang XW, Yang FY, Meijer M, Kraak B et al. 2019b – Redefining Humicola sensu stricto and related genera in the Chaetomiaceae. Studies in Mycology 93, 65–153.

Wijayawardene NN, Hyde KD, Rajeshkumar KC, Hawksworth DL et al. 2017a – Notes for genera: Ascomycota. Fungal Diversity 86, 1–594.

Zhang Y, Wu W, Cai L. 2017b – Polyphasic characterisation of Chaetomium species from soil and compost revealed high number of undescribed species, Fungal Biology 121, 21–43.

 

Entry by

Kevin David Hyde, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, P.R. China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Mushroom Research Foundation, 128 M.3 Ban Pa Deng T. Pa Pae, A. Mae Taeng, Chiang Mai 50150, Thailand, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand, Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, Yunnan, P.R. China, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, World Agroforestry Centre, East and Central Asia, Kunming 650201, Yunnan, P.R. China

 

Published online 28 February 2020

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