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Thèse de Doctorat
DOI
https://doi.org/10.11606/T.42.2010.tde-07012011-142503
Document
Auteur
Nom complet
Patricia Zorzete
Unité de l'USP
Domain de Connaissance
Date de Soutenance
Editeur
São Paulo, 2010
Directeur
Jury
Correa, Benedito (Président)
Almeida, Adriana Palma de
Barros, Mário Henrique de
Fernandes, Andrezza Maria
Fraga, Marcelo Elias
Titre en portugais
Fungos, micotoxinas e fitoalexina em variedades de amendoim do plantio ao armazenamento.
Mots-clés en portugais
Ácido Ciclopiazônico
Aflatoxinas
Amendoim
Armazenagem
Fatores Abióticos
Fitoalexina
Fungos
Micobiota
Micotoxinas
Resumé en portugais
O trabalho avaliou micobiota, contaminação por aflatoxinas (AFB), ácido ciclopiazônico (ACP) e fitoalexina (trans-resveratrol) nas variedades de amendoim Runner IAC 886 e IAC-Caiapó, no campo e armazenamento. Nas amostras de campo, na IAC 886 predominou Fusarium spp. nos grãos e cascas, contaminação por AFB em 30% dos grãos, ACP em 70% e trans-resveratrol em 5%. Na IAC-Caiapó prevaleceu Fusarium spp., em todas as amostras, AFB em 25% dos grãos, ACP em 55% e trans-resveratrol em 15%. Nas folhas, trans-reveratrol estava presente em 70%, nas variedades. No armazenamento, observou-se maior freqüência de A. flavus, A. parasiticus. Na IAC 886 AFB foi detectada em 20% nos grãos e 23% nas cascas e ACP em 80% dos grãos. Na IAC-Caiapó, AFB foi encontrada em 13% tanto nas amostras de grãos, como nas cascas e ACP em 70% dos grãos. Os resultados do potencial toxigênico de A. flavus revelaram 81% produtores de aflatoxinas, 95% de ACP e 75% de ambas. Todos A. flavus produtores de esclerócios pertenciam ao grupo L.
Titre en anglais
Fungi, mycotoxins phytoalexin in peanut varieties, during plant growth from the field to storage.
Mots-clés en anglais
Abiotics Factors
Aflatoxins
Cicloplazonic ACID
Fitoalexins
Fungi
Mycoflora
Mycotoxins
Peanut
Storage
Resumé en anglais
This study had assessed mycobiota, contamination by aflatoxins (AFB), cyclopiazonic acid (CPA) and phytoalexin (trans-resveratrol) in the peanuts varieties Runner IAC 886 and IAC-Caiapó, in the field and storage. In the Field samples, in IAC 886 it was predominated Fusarium spp. in grains and shells, contamination by AFB in 30% of the grains, CPA in 70% and trans-resveratrol in 5%. In IAC-Caiapó, it was prevailed Fusarium spp. in all samples, AFB in 25% of the grains, CPA in 55% and trans-resveratrol in 15%. In the leaves, trans-resveratrol was present in 70% in the varieties. In the storage, it was observed a higher frequency of A. flavus, A. parasiticus. In IAC 886, it was detected AFB in 20% of the grains and 23% in the shells, and CPA in 80% of the grains. In IAC-Caiapó, it was found AFB in 13% both in grains as in the shells samples, and CPA in 70% of the grains. The toxigenic potential results of A. flavus revealed 81% aflatoxins producers, 95% CPA producers and 75% both producers. All strains of A. flavus sclerotia producers belonged to the L group.
 
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Date de Publication
2011-08-08
 
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