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

dc.contributor.authorWang, X.W.
dc.contributor.authorHoubraken, J.
dc.contributor.authorGroenewald, Johannes Zacharias
dc.contributor.authorMeijer, M.
dc.contributor.authorAndersen, B.
dc.contributor.authorNielsen, K.F.
dc.contributor.authorCrous, Pedro W.
dc.contributor.authorSamson, R.A.
dc.date.accessioned2017-01-25T10:12:10Z
dc.date.available2017-01-25T10:12:10Z
dc.date.issued2016-12-08
dc.description.abstractDuring 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.departmentForestry and Agricultural Biotechnology Institute (FABI)en_ZA
dc.description.departmentMicrobiology and Plant Pathologyen_ZA
dc.description.librarianam2017en_ZA
dc.description.sponsorshipThis 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.urihttp://www.studiesinmycology.orgen_ZA
dc.identifier.citationWang, 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.issn0166-0616 (print)
dc.identifier.issn1872-9797 (online)
dc.identifier.otherhttp://dx.doi.org/10.1016/j.simyco.2016.11.005
dc.identifier.urihttp://hdl.handle.net/2263/58642
dc.language.isoenen_ZA
dc.publisherFungal 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.subjectChaetomiaceaeen_ZA
dc.subjectIndoor speciesen_ZA
dc.subjectMorphological diversityen_ZA
dc.subjectPhylogenyen_ZA
dc.titleDiversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environmentsen_ZA
dc.typeArticleen_ZA

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