Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/107247
Title: Fungal diversity and metabolomic profiles in GM and isogenic non-GM maize cultivars from Brazil
Authors: Gasperini, Alessandra Marcon
Garcia-Cela, Esther
Sulyok, M.
Medina, Angel
Magan, Naresh
Keywords: Fungi
Toxigenic fungi
Metabolites
Genetically modified foods
Issue Date: 2021
Publisher: Springer
Citation: Gasperini, A. M., Garcia-Cela, E., Sulyok, M., Medina, A., & Magan, N. (2021). Fungal diversity and metabolomic profiles in GM and isogenic non-GM maize cultivars from Brazil. Mycotoxin research, 37, 39-48.
Abstract: There is little knowledge of the microbial diversity, mycotoxins and associated secondary metabolites in GM maize and isogenic non-GM cultivars (cvs). This study has quantified the microbial populations and dominant fungal genera in 6 cvs of each type representative of herbicide, pesticide or stacked resistance to both. The predominant mycotoxins and targeted metabolomics profiles were also compared between the two sets of cvs. This showed that the overall fungal populations were 8.8 CFUs g−1 maize. The dominant genera, isolated from maize samples, whether surface-sterilised or not, in all maize cvs were Fusarium, followed by Penicillium, Aspergillus and occasionally Cladosporium and Alternaria. The analysis of the targeted metabolomics showed that approx. 29 different metabolites were detected. These were dominated by fumonisins and minor Penicillium spp. metabolites (questiomycin A and rugulovasine A). Interestingly, the range and number of mycotoxins present in the GM cvs were significantly lower than in the non-GM maize samples. This suggests that while the fungal diversity of the two types of maize appeared to be very similar, the major contaminant mycotoxins and range of toxic secondary metabolites were much lower in the GM cvs.
URI: https://www.um.edu.mt/library/oar/handle/123456789/107247
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