Time course of virus-like particles (VLPs) double-stranded rna accumulation in toxigenic and non-toxigenic strains of Aspergillus flavus
Two strains of Aspergillus flavus, non-toxigenic NRRL 6550 and toxigenic NRRL 5940, were studied over a period of 44 days, in order to detect the presence of virus-like particles (VLPs) by means of electron microscopy (EM) and nucleic acids electrophoresis. Only the toxigenic strain contained VLPs, presenting three-segmented dsRNA. An increase in VLPs number was observed during the exponential phase of fungal growth, up to day 12 of culture; after this, higher levels of aflatoxin production in toxigenic NRRL 5940 mycelia occurred in parallel with decreased VLPs replication.
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Main Authors: | Silva,Valéria N., Durigon,Edison Luiz, Pires,Maria de Fátima Costa, Lourenço,Alexandre, Faria,Maria Jacinta de, Corrêa,Benedito |
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Format: | Digital revista |
Language: | English |
Published: |
Sociedade Brasileira de Microbiologia
2001
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000100013 |
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