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Genome sequence of an aflatoxigenic pathogen of Argentinian peanut, Aspergillus arachidicola

Authors :
Olivier Puel
Brian M. Mack
Geromy G. Moore
Shannon B. Beltz
Moore, Geromy G
Southern Regional Research Center
USDA-ARS : Agricultural Research Service
Biosynthèse & Toxicité des Mycotoxines (ToxAlim-BioToMyc)
ToxAlim (ToxAlim)
Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Vétérinaire de Toulouse (ENVT)
Institut National Polytechnique (Toulouse) (Toulouse INP)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP)
Université Fédérale Toulouse Midi-Pyrénées-Ecole d'Ingénieurs de Purpan (INPT - EI Purpan)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées
Source :
BMC Genomics, BMC Genomics 1 (19), 12 p.. (2018), BMC Genomics, BioMed Central, 2018, 19 (1), 12 p. ⟨10.1186/s12864-018-4576-2⟩, BMC Genomics, Vol 19, Iss 1, Pp 1-12 (2018)
Publication Year :
2018
Publisher :
Springer Science and Business Media LLC, 2018.

Abstract

Background Aspergillus arachidicola is an aflatoxigenic fungal species, first isolated from the leaves of a wild peanut species native to Argentina. It has since been reported in maize, Brazil nut and human sputum samples. This aflatoxigenic species is capable of secreting both B and G aflatoxins, similar to A. parasiticus and A. nomius. It has other characteristics that may result in its misidentification as one of several other section Flavi species. This study offers a preliminary analysis of the A. arachidicola genome. Results In this study we sequenced the genome of the A. arachidicola type strain (CBS 117610) and found its genome size to be 38.9 Mb, and its number of predicted genes to be 12,091, which are values comparable to those in other sequenced Aspergilli. A comparison of 57 known Aspergillus secondary metabolite gene clusters, among closely-related aflatoxigenic species, revealed nearly half were predicted to exist in the type strain of A. arachidicola. Of its predicted genes, 691 were identified as unique to the species and 60% were assigned Gene Ontology terms using BLAST2GO. Phylogenomic inference shows CBS 117610 sharing a most recent common ancestor with A. parasiticus. Finally, BLAST query of A. flavus mating-type idiomorph sequences to this strain revealed the presence of a single mating-type (MAT1–1) idiomorph. Conclusions Based on A. arachidicola morphological, genetic and chemotype similarities with A. flavus and A. parasiticus, sequencing the genome of A. arachidicola will contribute to our understanding of the evolutionary relatedness among aflatoxigenic fungi. Electronic supplementary material The online version of this article (10.1186/s12864-018-4576-2) contains supplementary material, which is available to authorized users.

Details

ISSN :
14712164
Volume :
19
Database :
OpenAIRE
Journal :
BMC Genomics
Accession number :
edsair.doi.dedup.....c349339512eb60ea9fea3b95b9683191