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Stud Mycol 59(1): 107-128 2007
DOI: 10.3114/sim.2007.59.12
Copyright © 2007 CBS Fungal Biodiversity Centre
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Polyphasic taxonomy of Aspergillus section Usti

J. Houbraken1,*, M. Due2, J. Varga1,3, M. Meijer1, J.C. Frisvad2 and R.A. Samson1

1 CBS Fungal Biodiversity Centre, PO Box 85167, NL-3508 AD Utrecht, the Netherlands
2 BioCentrum-DTU, Søltofts Plads, Building 221, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
3 Department of Microbiology, Faculty of Science and Informatics, University of Szeged, H-6701 Szeged, P.O. Box 533, Hungary

* Correspondence: J. Houbraken, j.houbraken{at}cbs.knaw.nl

Aspergillus ustus is a very common species in foods, soil and indoor environments. Based on chemical, molecular and morphological data, A. insuetus is separated from A. ustus and revived. A. insuetus differs from A. ustus in producing drimans and ophiobolin G and H and not producing ustic acid and austocystins. The molecular, physiological and morphological data also indicated that another species, A. keveii sp. nov. is closely related but distinct from A. insuetus. Aspergillus section Usti sensu stricto includes 8 species: A. ustus, A. puniceus, A. granulosus, A. pseudodeflectus, A. calidoustus, A. insuetus and A. keveii together with Emericella heterothallica.

Taxonomic novelties: Aspergillus insuetus revived, Aspergillus keveii sp. nov.

Keywords actin / Aspergillus / β-tubulin / calmodulin / extrolite profiles / ITS / phylogenetics / polyphasic taxonomy.




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