| two novel aflatoxin-producing aspergillus species from argentinean peanuts. | two novel species from aspergillus section flavi from different species of arachis (peanuts) in argentina are described as aspergillus arachidicola sp. nov. and aspergillus minisclerotigenes sp. nov. their novel taxonomic status was determined using a polyphasic taxonomic approach with phenotypic (morphology and extrolite profiles) and molecular (beta-tubulin and calmodulin gene sequences) characters. a. minisclerotigenes resembles aspergillus flavus and aspergillus parvisclerotigenus in produci ... | 2008 | 18319485 |
| molecular strategy for identification in aspergillus section flavi. | aspergillus flavus is one of the most common contaminants that produces aflatoxins in foodstuffs. it is also a human allergen and a pathogen of animals and plants. aspergillus flavus is included in the aspergillus section flavi that comprises 11 closely related species producing different profiles of secondary metabolites. a six-step strategy has been developed that allows identification of nine of the 11 species. first, three real-time pcr reactions allowed us to discriminate four groups within ... | 2010 | 20377644 |
| the biodiversity of aspergillus section flavi in brazil nuts: from rainforest to consumer. | a total of 288 brazil nut samples (173 kernel and 115 shell) from the amazon rainforest region and são paulo state, brazil were collected at different stages of brazil nut production. samples were analysed for: percentages of aflatoxigenic fungal species and potential for aflatoxin production and presence of aflatoxins. aspergillus nomius was the most common species found (1235 isolates) which amounted to 30% of the total species with potential to produce aflatoxins. this species is of concern s ... | 2013 | 23290234 |
| the first report of a. novoparasiticus, a. arachidicola and a. pseudocaelatus in brazilian corn kernels. | maize is one of the most important commercial crops cultivated throughout the world, mostly in tropical and subtropical countries. it is highly susceptible to mycotoxins, toxic secondary metabolites produced by fungi. in this study, we assessed freshly harvested corn produced in brazil for aflatoxin contamination and the presence of aspergillus. b type aflatoxins (afb1+afb2) were detected in 56% of 16 grain samples, while g type aflatoxins (afg1+afg2) were detected in 25%. of the total number of ... | 2017 | 27978505 |