Data/hora: 01/06/2024 05:51:25

Provedor de dados: | 58
País: | Brazil
Título: | Effect of fungicide on Fusarium verticillioidesmycelial morphology and fumonisin B1 production
Autores: | Miguel,Tatiana de Á.; Bordini,Jaqueline G.; Saito,Gervásio H.; Andrade,Célia G.T. de J.; Ono,Mario A.; Hirooka,Elisa Y.; Vizoni,Édio; Ono,Elisabete Y.S.
Data: | 2015-03-01
Ano: | 2015
Palavras-chave: | Toxigenic fungi; Mycotoxin; Scanning electron microscopy; Electron micrographs; Extracellular material.
Resumo: | The effect of fludioxonil + metalaxyl-M on the mycelial morphology, sporulation and fumonisin B1 production by Fusarium verticillioides 103 F was evaluated. Scanning electron microscopy analysis showed that the fungicide caused inhibition of hyphal growth and defects on hyphae morphology such as cell wall disruption, withered hyphae, and excessive septation. In addition, extracellular material around the hyphae was rarely observed in the presence of fludioxonil + metalaxyl-M. While promoting the reduction of mycelial growth, the fungicide increased sporulation of F. verticillioides compared to the control, and the highest production occurred on the 14th day in the treatments and on the 10th day in the control cultures. Fumonisin B1production in the culture media containing the fungicide (treatment) was detected from the 7th day incubation, whereas in cultures without fungicide (control) it was detected on the 10th day. The highest fumonisin B1 production occurred on the 14th day, both for the control and for the treatment. Fludioxonil + metalaxyl - M can interfere in F. verticillioides mycelial morphology and sporulation and increase fumonisin B1 levels. These data indicate the importance of understanding the effects of fungicide to minimize the occurrence of toxigenic fungi and fumonisins.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100293
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-838246120120383
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.46 n.1 2015
Fonte: | info:eu-repo/semantics/openAccess