Fungos, micotoxinas e fitoalexina em variedades de amendoim do plantio ao armazenamento.

Zorzete, Patricia

doi:10.11606/T.42.2010.tde-07012011-142503

Home

Facilities

Doctoral Thesis

DOI

https://doi.org/10.11606/T.42.2010.tde-07012011-142503

Document

Doctoral Thesis

Author

Zorzete, Patricia (Catálogo USP)

Full name

Patricia Zorzete

Institute/School/College

Instituto de Ciências Biomédicas

Knowledge Area

Microbiology

Date of Defense

2010-12-07

Published

São Paulo, 2010

Supervisor

Correa, Benedito (Catálogo USP)

Committee

Correa, Benedito (President)
Almeida, Adriana Palma de
Barros, Mário Henrique de
Fernandes, Andrezza Maria
Fraga, Marcelo Elias

Title in Portuguese

Fungos, micotoxinas e fitoalexina em variedades de amendoim do plantio ao armazenamento.

Keywords in Portuguese

Ácido Ciclopiazônico
Aflatoxinas
Amendoim
Armazenagem
Fatores Abióticos
Fitoalexina
Fungos
Micobiota
Micotoxinas

Abstract in Portuguese

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.

Title in English

Fungi, mycotoxins phytoalexin in peanut varieties, during plant growth from the field to storage.

Keywords in English

Abiotics Factors
Aflatoxins
Cicloplazonic ACID
Fitoalexins
Fungi
Mycoflora
Mycotoxins
Peanut
Storage

Abstract in English

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.

WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.

PatriciaZorzete_Doutorado.pdf (2.76 Mbytes)

PatriciaZorzete_Doutorado_P.pdf (1.02 Mbytes)

Publishing Date

2011-08-08

Derived works

WARNING: Learn what derived works are clicking here.