A comparative genomics study of 23 Aspergillus species from section Flavi

Inge Kjærbølling, Tammi Camilla Vesth, Jens Christian Frisvad, Jane L. Nybo, Sebastian Theobald, Sara Kildgaard, Thomas Isbrandt Petersen, Alan Kuo, Atsushi Sato, Ellen Kirstine Lyhne, Martin Engelhard Kogle, Ad Wiebenga, Roland S. Kun, Ronnie J.M. Lubbers, Miia R. Mäkelä, Kerrie Barry, Mansi Chovatia, Alicia Clum, Chris Daum, Sajeet HaridasGuifen He, Kurt LaButti, Anna Lipzen, Stephen Mondo, Jasmyn Pangilinan, Robert Riley, Asaf Salamov, Blake A. Simmons, Jon K. Magnuson, Bernard Henrissat, Uffe Hasbro Mortensen, Thomas Ostenfeld Larsen, Ronald P. de Vries, Igor V. Grigoriev, Masayuki Machida, Scott E. Baker, Mikael R. Andersen*

*Corresponding author for this work

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Section Flavi encompasses both harmful and beneficial Aspergillus species, such as Aspergillus oryzae, used in food fermentation and enzyme production, and Aspergillus flavus, food spoiler and mycotoxin producer. Here, we sequence 19 genomes spanning section Flavi and compare 31 fungal genomes including 23 Flavi species. We reassess their phylogenetic relationships and show that the closest relative of A. oryzae is not A. flavus, but A. minisclerotigenes or A. aflatoxiformans and identify high genome diversity, especially in sub-telomeric regions. We predict abundant CAZymes (598 per species) and prolific secondary metabolite gene clusters (73 per species) in section Flavi. However, the observed phenotypes (growth characteristics, polysaccharide degradation) do not necessarily correlate with inferences made from the predicted CAZyme content. Our work, including genomic analyses, phenotypic assays, and identification of secondary metabolites, highlights the genetic and metabolic diversity within section Flavi.
Original languageEnglish
Article number1106
JournalNature Communications
Issue number1
Number of pages12
Publication statusPublished - 2020


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