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Study of rhizosphere bacterial communities of Triticum aestivum L. with antagonist potential against wheat blast caused by Magnaporthe grisea

Grant number: 14/07382-9
Support type:Scholarships in Brazil - Master
Effective date (Start): October 01, 2014
Effective date (End): February 29, 2016
Field of knowledge:Biological Sciences - Microbiology
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Itamar Soares de Melo
Grantee:Ana Gabriele Barbosa Casteliani
Home Institution: Embrapa Meio-Ambiente. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). Jaguariúna , SP, Brazil

Abstract

The culture of wheat (Triticum aestivum L.) is the second largest in the world and Brazil occupies the second place in production in South America. However, the productivity of this crop may be limited due to the occurrence of several diseases; and wheat blast, caused by the fungus Magnaporthe grisea, has concerned the national and international scientific communities, due to the severity of damage and the absence of effective control techniques. The microorganisms present in the rhizosphere establish symbiotic relationships with plants, and due to this feature, several populations have already been identified as biological control agents. Little is known about the antagonist potential of rhizosphere microorganisms of wheat against the plant pathogenic fungus Magnaporthe grisea causing blast disease of wheat in Brazil. Thus, with this study, we intend to characterize the main representatives of the bacterial communities in the rhizosphere of two varieties of wheat (Triticum aestivum L.) with different levels of susceptibility to wheat blast, in order to obtain species with potential for biocontrol. (AU)