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Stud Mycol 59(1): 31-37 2007
DOI: 10.3114/sim.2007.59.04
Copyright © 2007 CBS Fungal Biodiversity Centre
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Secondary metabolite profiling, growth profiles and other tools for species recognition and important Aspergillus mycotoxins

J.C. Frisvad1,*, T.O. Larsen1, R. de Vries2, M. Meijer2,3, J. Houbraken3, F.J. Cabañes4, K. Ehrlich5 and R.A. Samson3

1 Center for Microbial Biotechnology, BioCentrum-DTU, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
2 Microbiology, Utrecht University, Utrecht, The Netherlands
3 CBS Fungal Biodiversity Centre, Utrecht, The Netherlands
4 Veterinary Mycology Group. Departament de Sanitat i d"Anatomia Animals, Universitat Autònoma de Barcelona, Bellaterra, Spain
5 Southern Regional Research Center/ARS/USDA, New Orleans, LA 70124, U.S.A.

* Correspondence: Jens C. Frisvad, jcf{at}biocentrum.dtu.dk

Species in the genus Aspergillus have been classified primarily based on morphological features. Sequencing of house-hold genes has also been used in Aspergillus taxonomy and phylogeny, while extrolites and physiological features have been used less frequently. Three independent ways of classifying and identifying aspergilli appear to be applicable: Morphology combined with physiology and nutritional features, secondary metabolite profiling and DNA sequencing. These three ways of identifying Aspergillus species often point to the same species. This consensus approach can be used initially, but if consensus is achieved it is recommended to combine at least two of these independent ways of characterising aspergilli in a polyphasic taxonomy. The chemical combination of secondary metabolites and DNA sequence features has not been explored in taxonomy yet, however. Examples of these different taxonomic approaches will be given for Aspergillus section Nigri.

Keywords aflatoxins / carbohydrates / chemotaxonomy / extrolites / ochratoxins / phenotype




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