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Poliphasic study for the identification of Fusarium spp deoxynivalenol producing strains

Grant number: 11/19470-1
Support Opportunities:Scholarships in Brazil - Doctorate
Start date: March 01, 2012
End date: May 31, 2015
Field of knowledge:Agronomical Sciences - Food Science and Technology - Food Science
Principal Investigator:Benedito Corrêa
Grantee:Sabina Moser Tralamazza
Host Institution: Instituto de Ciências Biomédicas (ICB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The main Fusarium deoxynivalenol producing species are F. graminearum, F. culmorum and F. avenanceum. These fungi cause great yield lost due to plant and grain rot and the production of toxic secondary metabolites called mycotoxins. To create new efficient ways of combat is essential profound knowledge of the epidemiological agent and its interaction host-plant. The Fusarium genus have high diversity and controversial taxonomy, which may lead to superficial or inconclusive identifications. Thus, the aim of this project is employing a polyphasic approach, including phenotypic (morphological and VCG- vegetative compatibility group) and genotypic characteristics (partial sequence of gene ef-1 ±) in the identification of Fusarium section Discolor ( F. graminearum and F. culmorum ) and section Roseum ( F. avenaceum) included in the teleomorf genus Gibberella, isolated from two wheat producers regions ( RS and SP). Also we aim to correlate TRI gene expression, involved in the trichothecenes production biosynthetic pathway with deoxynivalenol production of the isolated strains. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
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Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
TRALAMAZZA, Sabina Moser. Fungal diversity, polyphasic analysis of the genus Fusarium and determination of deoxynivalenol and zearalenone in wheat grains from different regions of Brazil.. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Ciências Biomédicas (ICB/SDI) São Paulo.