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Int J Syst Evol Microbiol 57 (2007), 1925-1932; DOI  10.1099/ijs.0.65021-0
© 2007 International Union of Microbiological Societies

Aspergillus brasiliensis sp. nov., a biseriate black Aspergillus species with world-wide distribution

János Varga1,5, Sándor Kocsubé1, Beáta Tóth2, Jens C. Frisvad3, Giancarlo Perrone4, Antonia Susca4, Martin Meijer5 and Robert A. Samson5

1 Department of Microbiology, Faculty of Sciences, University of Szeged, PO Box 533, H-6701 Szeged, Hungary
2 Cereal Research Non-Profit Company, PO Box 391, H-6701 Szeged, Hungary
3 Center for Microbial Biotechnology, BioCentrum-DTU, Building 221, Technical University of Denmark, DK-2800 Kgs Lyngby, Denmark
4 Institute of Sciences of Food Production, CNR, Via Amendola 122/O, 70126 Bari, Italy
5 CBS Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands

Correspondence
János Varga
jvarga{at}cbs.knaw.nl

A novel species, Aspergillus brasiliensis sp. nov., is described within Aspergillus section Nigri. This species can be distinguished from other black aspergilli based on intergenic transcribed region, beta-tubulin and calmodulin gene sequences, by amplified fragment length polymorphism analysis and by extrolite profiles. A. brasiliensis isolates produced naphtho-{gamma}-pyrones, tensidol A and B and pyrophen in common with Aspergillus niger and Aspergillus tubingensis, but also several unique compounds, justifying their treatment as representing a separate species. None of the isolates were found to produce ochratoxin A, kotanins, funalenone or pyranonigrins. The novel species was most closely related to A. niger, and was isolated from soil from Brazil, Australia, USA and The Netherlands, and from grape berries from Portugal. The type strain of Aspergillus brasiliensis sp. nov. is CBS 101740T (=IMI 381727T=IBT 21946T).

Abbreviations: AFLP, amplified fragment length polymorphism; ITS, intergenic transcribed spacer; SEM, scanning electron microscopy

The GenBank/EMBL/DDBJ accession numbers for the beta-tubulin, ITS and calmodulin gene sequences determined in this study are shown in Table 1.

The Mycobank accession number for Aspergillus brasiliensis sp. nov. is MB510581 (http://www.mycobank.org).

Neighbour-joining trees based on ITS and calmodulin gene sequence data of Aspergillus section Nigri, a dendrogram based on cluster analysis of AFLP data and tables listing the Aspergillus section Nigri strains used in AFLP analysis and the extrolites produced by the Aspergillus brasiliensis isolates are available with the online version of this paper.




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