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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
20/06/2011 |
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Data da última atualização: |
12/12/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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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. |
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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. |
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Título: |
Leaf blast (Magnaporthe oryzae) suppression and growth promotion by rhizobacteria on aerobic rice in Brazil. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Biological Control, San Diego, v. 58, n. 2, p. 160-166, Aug. 2011. |
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Idioma: |
Inglês |
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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 |
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Thesagro: |
Arroz; Brusone; Doença de planta; Oryza sativa. |
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Thesaurus Nal: |
Magnaporthe oryzae. |
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Categoria do assunto: |
H Saúde e Patologia |
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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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Registro Completo
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
30/07/2015 |
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Data da última atualização: |
28/03/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ANDRADE, S. R. M. de; SANTOS, J. M. dos; TABOSA, D. M. da S.; BENEDETTI, E.; ALBRECHT, J. C.; CHAGAS, J. H.; SÓ e SILVA, M. |
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Afiliação: |
SOLANGE ROCHA MONTEIRO DE ANDRADE, CPAC; JANYNE MOURA DOS SANTOS, CPAC; DÉBORAH MARIA DA SILVA TABOSA, CPAC; EDUARDO BENEDETTI, CPAC; JULIO CESAR ALBRECHT, CPAC; JORGE HENRIQUE CHAGAS, CNPT; MARCIO SO E SILVA, CNPT. |
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Título: |
Estudos de cultivares de trigo submetidas ao estresse hídrico em casa de vegetação. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 8.; SEMINÁRIO TÉCNICO DO TRIGO, 9., 2014, Canela; REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 9.; SEMINÁRIO TÉCNICO DO TRIGO, 10., 2015, Passo Fundo. Anais... Passo Fundo: Biotrigo Genética: Embrapa Trigo, 2015. |
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Descrição Física: |
2015 - Ecologia, Fisiologia e Práticas Culturais - Trabalho 169. 1 CD-ROM. |
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Idioma: |
Português |
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Thesaurus NAL: |
wheat. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127187/1/2015ecologiatrabalho169.pdf
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Marc: |
LEADER 00919nam a2200193 a 4500
001 2020881
005 2016-03-28
008 2015 bl uuuu u00u1 u #d
100 1 $aANDRADE, S. R. M. de
245 $aEstudos de cultivares de trigo submetidas ao estresse hídrico em casa de vegetação.$h[electronic resource]
260 $aIn: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 8.; SEMINÁRIO TÉCNICO DO TRIGO, 9., 2014, Canela; REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 9.; SEMINÁRIO TÉCNICO DO TRIGO, 10., 2015, Passo Fundo. Anais... Passo Fundo: Biotrigo Genética: Embrapa Trigo$c2015
300 $c2015 - Ecologia, Fisiologia e Práticas Culturais - Trabalho 169. 1 CD-ROM.
650 $awheat
700 1 $aSANTOS, J. M. dos
700 1 $aTABOSA, D. M. da S.
700 1 $aBENEDETTI, E.
700 1 $aALBRECHT, J. C.
700 1 $aCHAGAS, J. H.
700 1 $aSÓ e SILVA, M.
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Embrapa Trigo (CNPT) |
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