Data/hora: 15/06/2024 11:56:42

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Unidades Centrais.
Data corrente: | 18/12/2015
Data da última atualização: | 04/10/2021
Autoria: | REIS, K. B.; CORTÊS, M. V. de C. B.; MARTINS, F. S.; FILIPPI, M. C. C. de; PAULA, J. R. de; CONCEIÇÃO, E. C. da.
Afiliação: | KARINNA BANNACH REIS, UFG; MARCIO VINICIUS DE C BARROS CORTES, CNPAF; FREDERICO SEVERINO MARTINS, USP, Ribeirão Preto-SP; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; JOSE REALINO DE PAULA, UFG; EDEMILSON CARDOSO DA CONCEIÇÃO, UFG.
Título: | Characterization of rue extract and its potential for controlling rice blast.
Ano de publicação: | 2015
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 50, n. 12, p. 1121-1130, dez. 2015.
DOI: | 10.1590/S0100-204X2015001200001
Idioma: | Inglês
Conteúdo: | The objective of this work was to purify and standardize the extract of rue (Ruta graveolens) and evaluate its effect on Magnaporthe oryzae as an alternative to the integrated management of rice blast. The drug was characterized, the liquid extract was obtained, and the methodology for quantifying the standard markers furanocoumarins psoralen and bergapten was validated. Rue extract and the markers, solely or in combination, were assayed in vitro, as well as in greenhouse conditions, for their ability to suppress leaf blast, by the evaluation of mycelial growth, conidial germination, and appressorium formation. Rue extract inhibited M. oryzae mycelial growth (100%), conidial germination (LD50=0.237 mg), and the appressorium formation (LD50=0.121 mg); besides, the extract reduced leaf blast by 80.84%. Fluorescence microscopy showed that rue extract did not damage M. oryzae cell wall and plasma membrane, indicating another mode of action. Rue extract has a great potential for controlling rice leaf blast.
Palavras-Chave: | Bergapteno; Controle; Psoraleno.
Thesagro: | Arroz; Arruda; Brusone; Ruta Graveolens.
Thesaurus Nal: | Magnaporthe oryzae.

Categoria do assunto:

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H Saúde e Patologia

URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/135872/1/CNPAF-pabv12.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)

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CNPAF - (33875-1) - UPC - AP - PP - 2015 -  - 2015 - DIS
AI-SEDE - (58550-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS