Fungal diversity and metabolomic profiles in GM and isogenic non-GM maize cultivars from Brazil
| Autor: | Angel Medina, Esther Garcia-Cela, Michael Sulyok, Alessandra Marcon Gasperini, Naresh Magan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Fusarium
Aflatoxin Mycotoxigenic fungi Maize cultivars Toxicology 01 natural sciences Microbiology Non-GM chemistry.chemical_compound 0404 agricultural biotechnology fluids and secretions Metabolomics Cultivar Mycotoxin Fungal diversity Aspergillus biology Toxic secondary metabolites 010401 analytical chemistry food and beverages 04 agricultural and veterinary sciences GM Alternaria biology.organism_classification equipment and supplies 040401 food science 0104 chemical sciences Horticulture Selective media chemistry non-GM Penicillium Original Article Biotechnology Cladosporium |
| Zdroj: | Mycotoxin Research |
| ISSN: | 1867-1632 0178-7888 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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