Diversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environments

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dc.contributor.author Wang, X.W.
dc.contributor.author Houbraken, J.
dc.contributor.author Groenewald, J.Z.
dc.contributor.author Meijer, M.
dc.contributor.author Andersen, B.
dc.contributor.author Nielsen, K.F.
dc.contributor.author Crous, Pedro W.
dc.contributor.author Samson, R.A.
dc.date.accessioned 2017-01-25T10:12:10Z
dc.date.available 2017-01-25T10:12:10Z
dc.date.issued 2016-12-08
dc.description.abstract During a study of indoor fungi, 145 isolates belonging to Chaetomiaceae were cultured from air, swab and dust samples from 19 countries. Based on the phylogenetic analyses of DNA-directed RNA polymerase II second largest subunit (rpb2), β-tubulin (tub2), ITS and 28S large subunit (LSU) nrDNA sequences, together with morphological comparisons with related genera and species, 30 indoor taxa are recognised, of which 22 represent known species, seven are described as new, and one remains to be identified to species level. In our collection, 69 % of the indoor isolates with six species cluster with members of the Chaetomium globosum species complex, representing Chaetomium sensu stricto. The other indoor species fall into nine lineages that are separated from each other with several known chaetomiaceous genera occurring among them. No generic names are available for five of those lineages, and the following new genera are introduced here: Amesia with three indoor species, Arcopilus with one indoor species, Collariella with four indoor species, Dichotomopilus with seven indoor species and Ovatospora with two indoor species. The generic concept of Botryotrichum is expanded to include Emilmuelleria and the chaetomium-like species B. muromum (= Ch. murorum) in which two indoor species are included. The generic concept of Subramaniula is expanded to include several chaetomium-like taxa as well as one indoor species. Humicola is recognised as a distinct genus including two indoor taxa. According to this study, Ch. globosum is the most abundant Chaetomiaceae indoor species (74/145), followed by Ch. cochliodes (17/ 145), Ch. elatum (6/145) and B. piluliferum (5/145). The morphological diversity of indoor Chaetomiaceae as well as the morphological characteristics of the new genera are described and illustrated. This taxonomic study redefines the generic concept of Chaetomium and provides new insight into the phylogenetic relationships among different genera within Chaetomiaceae. en_ZA
dc.description.department Forestry and Agricultural Biotechnology Institute (FABI) en_ZA
dc.description.department Microbiology and Plant Pathology en_ZA
dc.description.librarian am2017 en_ZA
dc.description.sponsorship This work was mainly supported by the Alfred Sloan Foundation Programme on the Microbiology of the Built Environment (Grant No. G-2014-14529), partly supported by the National Natural Science Foundation of China (Project No. 30570007), the Ministry of Science and Technology of P.R. China (No. 2006FY120100) and the VILLUM foundation. en_ZA
dc.description.uri http://www.studiesinmycology.org en_ZA
dc.identifier.citation Wang, XW, Houbraken, J, Groenewald, JZ, Meijer, M, Andersen, B, Nielsen, KF, Crous, PW & Samson, RA 2016, 'Diversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environments', Studies in Mycology, vol. 84, pp. 145-224. en_ZA
dc.identifier.issn 0166-0616 (print)
dc.identifier.issn 1872-9797 (online)
dc.identifier.other http://dx.doi.org/10.1016/j.simyco.2016.11.005
dc.identifier.uri http://hdl.handle.net/2263/58642
dc.language.iso en en_ZA
dc.publisher Fungal Biodiversity Centre (CBS) en_ZA
dc.rights © 2017, CBS-KNAW Fungal Biodiversity Centre. Production and hosting by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license. en_ZA
dc.subject Chaetomiaceae en_ZA
dc.subject Indoor species en_ZA
dc.subject Morphological diversity en_ZA
dc.subject Phylogeny en_ZA
dc.title Diversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environments en_ZA
dc.type Article en_ZA


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