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Toxins 2017, 9(11), 353; doi:10.3390/toxins9110353

Aspergillus korhogoensis, a Novel Aflatoxin Producing Species from the Côte d’Ivoire

1
Toxalim (Research Centre in Food Toxicology), Université de Toulouse, INRA, ENVT, INP-Purpan, UPS, 31027 Toulouse, France
2
Laboratoire de Biotechnologie et Microbiologie des Aliments, UFR des Sciences et Technologie des Aliments, Université Nangui Abrogoua, 02 BP 801 Abidjan, Côte d’Ivoire
3
Laboratoire des Procédés Industriels de Synthèse, de l’Environnement et des Energies Nouvelles, Département Génie Chimique et Agro-alimentaire, Institut National Polytechnique Félix Houphouët-Boigny, BP 1313 Yamoussoukro, Côte d’Ivoire
4
Southern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, New Orleans, LA 70179, USA
5
Department of Microbiology, Babcock University, 121003 Ilishan Remo, Nigeria
6
Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD)—Département PERSYST—UMR QualiSud, 34398 Montpellier, France
*
Author to whom correspondence should be addressed.
Academic Editor: Ana Calvo
Received: 26 September 2017 / Revised: 13 October 2017 / Accepted: 26 October 2017 / Published: 31 October 2017
(This article belongs to the Collection Aflatoxins)
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Abstract

Several strains of a new aflatoxigenic species of Aspergillus, A. korhogoensis, were isolated in the course of a screening study involving species from section Flavi found contaminating peanuts (Arachis hypogaea) and peanut paste in the Côte d’Ivoire. Based on examination of four isolates, this new species is described using a polyphasic approach. A concatenated alignment comprised of nine genes (ITS, benA, cmdA, mcm7, amdS, rpb1, preB, ppgA, and preA) was subjected to phylogenetic analysis, and resulted in all four strains being inferred as a distinct clade. Characterization of mating type for each strain revealed A. korhogoensis as a heterothallic species, since three isolates exhibited a singular MAT1-1 locus and one isolate exhibited a singular MAT1-2 locus. Morphological and physiological characterizations were also performed based on their growth on various types of media. Their respective extrolite profiles were characterized using LC/HRMS, and showed that this new species is capable of producing B- and G-aflatoxins, aspergillic acid, cyclopiazonic acid, aflavarins, and asparasones, as well as other metabolites. Altogether, our results confirm the monophyly of A. korhogoensis, and strengthen its position in the A. flavus clade, as the sister taxon of A. parvisclerotigenus. View Full-Text
Keywords: Aspergillus section Flavi; aflatoxins; cyclopiazonic acid; polyphasic approach; versicolorins Aspergillus section Flavi; aflatoxins; cyclopiazonic acid; polyphasic approach; versicolorins
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MDPI and ACS Style

Carvajal-Campos, A.; Manizan, A.L.; Tadrist, S.; Akaki, D.K.; Koffi-Nevry, R.; Moore, G.G.; Fapohunda, S.O.; Bailly, S.; Montet, D.; Oswald, I.P.; Lorber, S.; Brabet, C.; Puel, O. Aspergillus korhogoensis, a Novel Aflatoxin Producing Species from the Côte d’Ivoire. Toxins 2017, 9, 353.

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