Data/hora: 03/06/2024 12:03:57

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 18/12/2014
Data da última atualização: | 18/12/2014
Autoria: | FILIPPI, M. C.; SILVA, G. B. da; SILVA-LOBO, V. L. da; VIANA, H. F.; CORTES, M. V. de C. B.; PRABHU, A. S.
Afiliação: | MARTA CRISTINA CORSI DE FILIPPI, CNPAF; GISELE BARATA DA SILVA, UFRA; VALACIA LEMES DA SILVA LOBO, CNPAF; HERICA FERNANDES VIANA, bolsista CNPAF; MARCIO VINICIUS DE C BARROS CORTES, CNPAF; ANNE SITARAMA PRABHU, CNPAF.
Título: | Induction of resistance to rice leaf blast by avirulent isolates of Magnaporthe oryzae.
Ano de publicação: | 2014
Fonte/Imprenta: | Revista de Ciências Agrárias, Belém, PA, v. 57, n. 4, p. 388-395, out./dez. 2014.
DOI: | http://dx.doi.org/10.4322/rca.1673
Idioma: | Inglês
Conteúdo: | 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), &#946;-1.3-glucanase (GLU), chitinase (CHI), and phenylalanine ammonia-lyase (PAL). Systemic expression of resistance was also observed.
Thesagro: | Arroz; Brusone; Doença de planta; Oryza sativa; Pyricularia oryzae.
Categoria do assunto: | H Saúde e Patologia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/114064/1/mccf.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (33152-1) - UPC - AP - DD - 2014.080 -  - 2014.080 - DIS