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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
20/06/2011 |
Data da última atualização: |
12/12/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FILIPPI, M. C. C.; SILVA, G. B. da; SILVA-LOBO, V. L.; CORTES, M. V. C. B.; MORAES, A. J. G.; PRABHU, A. S. |
Afiliação: |
MARTA CRISTINA CORSI DE FILIPPI, CNPAF; GISELE BARATA DA SILVA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; VALACIA LEMES DA SILVA LOBO, CNPAF; MARCIO VINICIUS DE C BARROS CORTES, CNPAF; ALESSANDRA JACKELINE G. MORAES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; ANNE SITARAMA PRABHU. |
Título: |
Leaf blast (Magnaporthe oryzae) suppression and growth promotion by rhizobacteria on aerobic rice in Brazil. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Biological Control, San Diego, v. 58, n. 2, p. 160-166, Aug. 2011. |
Idioma: |
Inglês |
Conteúdo: |
Rice blast caused by Magnaporthe oryzae has the potential to cause 100% grain yield loss. The objective of this investigation was to identify rhizobacteria showing potential for plant growth stimulation and resistance induction under greenhouse conditions. Bacterial isolates were collected from the rhizosphere of rice plants from soils of Amazon, PA. Soil application with rhizobacteria was done by drenching with bacterial cell suspension before inoculating with virulent isolate of M. oryzae. Mass screening of 148 isolates for growth promotion showed that 12.7% stimulated plant height, whereas 52.0% increased root length, total biomass and root biomass. Based on these growth promotion results, 18 isolates were further tested for in vitro inhibition of the pathogen and reduction of leaf blast severity (LBS) in greenhouse test. All isolates inhibited pathogen growth and reduced disease severity from 16% to 95%. The two isolates showing the greatest suppression of leaf blast (Rizo-46 and Rizo-55) were further tested in a subsequent greenhouse trial using three replications and three application methods (drenching the soil, 15 and 2 days before inoculation with rice pathogen, and spraying 2 days before inoculating with virulent isolate). The soil drenching with isolate Rizo-55, 15 days prior to challenging with virulent isolate of M. oryzae reduced LBS by 90%, whereas Rizo-46 applied 2 days before reduced LBS by 95%. The capacity to suppress leaf blast by isolates Rizo-46 and Rizo-55 varied according to the mode of application. Also, the enzymatic tests were conducted to quantitate the presence of proteins related to pathogenesis (PRPs) during induction process of resistance by rhizobacteria. The enzyme activity of peroxidase, b-1,3-glucanase and chitinase greatly increased, and the results are in accord with greenhouse tests in relation to leaf blast disease suppression. MenosRice blast caused by Magnaporthe oryzae has the potential to cause 100% grain yield loss. The objective of this investigation was to identify rhizobacteria showing potential for plant growth stimulation and resistance induction under greenhouse conditions. Bacterial isolates were collected from the rhizosphere of rice plants from soils of Amazon, PA. Soil application with rhizobacteria was done by drenching with bacterial cell suspension before inoculating with virulent isolate of M. oryzae. Mass screening of 148 isolates for growth promotion showed that 12.7% stimulated plant height, whereas 52.0% increased root length, total biomass and root biomass. Based on these growth promotion results, 18 isolates were further tested for in vitro inhibition of the pathogen and reduction of leaf blast severity (LBS) in greenhouse test. All isolates inhibited pathogen growth and reduced disease severity from 16% to 95%. The two isolates showing the greatest suppression of leaf blast (Rizo-46 and Rizo-55) were further tested in a subsequent greenhouse trial using three replications and three application methods (drenching the soil, 15 and 2 days before inoculation with rice pathogen, and spraying 2 days before inoculating with virulent isolate). The soil drenching with isolate Rizo-55, 15 days prior to challenging with virulent isolate of M. oryzae reduced LBS by 90%, whereas Rizo-46 applied 2 days before reduced LBS by 95%. The capacity to suppress leaf blast by isolates Rizo-46 and Riz... Mostrar Tudo |
Thesagro: |
Arroz; Brusone; Doença de planta; Oryza sativa. |
Thesaurus Nal: |
Magnaporthe oryzae. |
Categoria do assunto: |
H Saúde e Patologia |
Marc: |
LEADER 02610naa a2200241 a 4500 001 1894505 005 2014-12-12 008 2011 bl uuuu u00u1 u #d 100 1 $aFILIPPI, M. C. C. 245 $aLeaf blast (Magnaporthe oryzae) suppression and growth promotion by rhizobacteria on aerobic rice in Brazil. 260 $c2011 520 $aRice blast caused by Magnaporthe oryzae has the potential to cause 100% grain yield loss. The objective of this investigation was to identify rhizobacteria showing potential for plant growth stimulation and resistance induction under greenhouse conditions. Bacterial isolates were collected from the rhizosphere of rice plants from soils of Amazon, PA. Soil application with rhizobacteria was done by drenching with bacterial cell suspension before inoculating with virulent isolate of M. oryzae. Mass screening of 148 isolates for growth promotion showed that 12.7% stimulated plant height, whereas 52.0% increased root length, total biomass and root biomass. Based on these growth promotion results, 18 isolates were further tested for in vitro inhibition of the pathogen and reduction of leaf blast severity (LBS) in greenhouse test. All isolates inhibited pathogen growth and reduced disease severity from 16% to 95%. The two isolates showing the greatest suppression of leaf blast (Rizo-46 and Rizo-55) were further tested in a subsequent greenhouse trial using three replications and three application methods (drenching the soil, 15 and 2 days before inoculation with rice pathogen, and spraying 2 days before inoculating with virulent isolate). The soil drenching with isolate Rizo-55, 15 days prior to challenging with virulent isolate of M. oryzae reduced LBS by 90%, whereas Rizo-46 applied 2 days before reduced LBS by 95%. The capacity to suppress leaf blast by isolates Rizo-46 and Rizo-55 varied according to the mode of application. Also, the enzymatic tests were conducted to quantitate the presence of proteins related to pathogenesis (PRPs) during induction process of resistance by rhizobacteria. The enzyme activity of peroxidase, b-1,3-glucanase and chitinase greatly increased, and the results are in accord with greenhouse tests in relation to leaf blast disease suppression. 650 $aMagnaporthe oryzae 650 $aArroz 650 $aBrusone 650 $aDoença de planta 650 $aOryza sativa 700 1 $aSILVA, G. B. da 700 1 $aSILVA-LOBO, V. L. 700 1 $aCORTES, M. V. C. B. 700 1 $aMORAES, A. J. G. 700 1 $aPRABHU, A. S. 773 $tBiological Control, San Diego$gv. 58, n. 2, p. 160-166, Aug. 2011.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
09/02/2012 |
Data da última atualização: |
12/07/2019 |
Tipo da produção científica: |
Folder/Folheto/Cartilha |
Autoria: |
OLIVEIRA, R. P. de; SOUZA, E. L. de S.; SCIVITTARO, W. B.; CASTRO, L. A. S. de; ROCHA, P. S. G. da. |
Afiliação: |
ROBERTO PEDROSO DE OLIVEIRA, CPACT; ELISABETH LISBOA DE SALDANHA SOUZA; WALKYRIA BUENO SCIVITTARO, CPACT; LUIS ANTONIO SUITA DE CASTRO, CPACT; PAULO SÉRGIO GOMES DA ROCHA. |
Título: |
Flame: pomelo de polpa bem vermelha e sem sementes. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
Pelotas: Embrapa Clima Temperado, 2011. |
Descrição Física: |
1 folder. |
Idioma: |
Português |
Notas: |
CNPQ, FEPAGRO. |
Palavras-Chave: |
Cultivar Flame. |
Thesagro: |
Fruta cítrica; Pomelo; Variedade. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/53714/1/FLAME-POMELO-DE-POLPA.pdf
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Marc: |
LEADER 00588nam a2200217 a 4500 001 1914881 005 2019-07-12 008 2011 bl uuuu u0uu1 u #d 100 1 $aOLIVEIRA, R. P. de 245 $aFlame$bpomelo de polpa bem vermelha e sem sementes. 260 $aPelotas: Embrapa Clima Temperado$c2011 300 $c1 folder. 500 $aCNPQ, FEPAGRO. 650 $aFruta cítrica 650 $aPomelo 650 $aVariedade 653 $aCultivar Flame 700 1 $aSOUZA, E. L. de S. 700 1 $aSCIVITTARO, W. B. 700 1 $aCASTRO, L. A. S. de 700 1 $aROCHA, P. S. G. da
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Embrapa Clima Temperado (CPACT) |
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