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Aflatoxins produced by Aspergillus nomius ASR3, a pathogen isolated from the leaf-cutter ant Atta sexdens rubropilosa

Author:
Silva-Junior, Eduardo Afonso da, Paludo, Camila Raquel, Valadares, Lohan, Lopes, Norberto Peporine, Nascimento, Fábio Santos do, Pupo, Mônica Tallarico
Source:
Revista Brasileira de Farmacognosia 2017 v.27 no.4 pp. 529-532
ISSN:
0102-695X
Subject:
Aspergillus nomius, Atta sexdens rubropilosa, aflatoxins, axenic culture, chemical analysis, economic impact, fungi, leaf-cutting ants, pathogenicity, pathogens, queen insects, tandem mass spectrometry, toxicity
Abstract:
Aspergillus spp. cause economic impacts due to aflatoxins production. Although the toxicity of aflatoxins is already known, little information about their ecological roles is available. Here we investigated the compounds produced by Aspergillus nomius ASR3 directly from a dead leaf-cutter queen ant Atta sexdens rubropilosa and the fungal axenic culture. Chemical analyses were carried out by high-resolution mass spectrometry and tandem mass spectrometry techniques. Aflatoxins B1 and G1 were detected in both the axenic culture and in the dead leaf-cutter queen ant. The presence of these mycotoxins in the dead leaf-cutter queen ant suggests that these compounds can be related to the insect pathogenicity of A. nomius against A. sexdens rubropilosa.
Agid:
5701908