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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Induction of resistance to rice leaf blast by avirulent isolates of Magnaporthe oryzae.
Autores:  FILIPPI, M. C.
SILVA, G. B. da
SILVA-LOBO, V. L. da
VIANA, H. F.
CORTES, M. V. de C. B.
PRABHU, A. S.
Data:  2014-12-18
Ano:  2014
Palavras-chave:  Arroz
Oryza sativa
Doença de planta
Brusone
Pyricularia oryzae
Resumo:  Rice blast (Magnaporthe oryzae) disease can cause losses of up to 100% in grain production. A sustainable management should consider alternative control measures. In the present work, biotic resistance induction to blast disease was studied by comparing disease severity and quantifying some pathogenesis-related proteins (PRPs). Rice plants of cultivars Metica-1 and Cica-8 were sprayed with biotic resistance inducers (incompatible isolates of M. oryzae) 48 h before inoculation with challenging isolates (compatible isolates of M. oryzae) under greenhouse conditions. For both cultivars, Metica-1 and Cica-8, the area under the disease progress curve was reduced by more than 80% when plants were induced with avirulent isolates of Magnaporthe oryzae. The biotic inducers also promoted an increase in the activity of peroxidase (POX), β-1.3-glucanase (GLU), chitinase (CHI), and phenylalanine ammonia-lyase (PAL). Systemic expression of resistance was also observed.
Tipo:  Artigo de periódico
Idioma:  Inglês
Identificador:  Revista de Ciências Agrárias, Belém, PA, v. 57, n. 4, p. 388-395, out./dez. 2014.

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1003111

http://dx.doi.org/10.4322/rca.1673
Direitos:  openAccess
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