aspergillus novoparasiticus: a new clinical species of the section flavi.during a survey on the incidence of aspergillus in clinical environments, we found some interesting isolates that were morphologically similar to aspergillus parasiticus, but differed in the color of the colonies and in the pattern of their conidial ornamentation. in the present study, those isolates were characterized using a polyphasic approach. a phylogenetic analysis was carried out, based on partial fragments of the acetamidase (amds) and o-methyltransferase (omts) genes and the internal tr ...201121745163
analysis of the contrast between natural occurrence of toxigenic aspergilli of the flavi section and aflatoxin b1 in cassava.aflatoxin b1 (afb1) is a carcinogenic mycotoxin produced by aspergilli of the section flavi that may contaminate food, in the field or during storage. cassava represents an important staple food in sub-saharan africa. the analysis of aflatoxigenic fungi in 36 cassava samples obtained from producers in benin indicated that 40% were contaminated by aspergilli of the section flavi. upon morphological and molecular characterization of the 20 isolates, 16 belonged to aspergillus flavus, 2 to aspergil ...201424290638
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 ...201727978505
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