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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
13/12/2017 |
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Data da última atualização: |
01/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GUIMARÃES, R. A.; LOBO, V. L. da S.; CORTES, M. V. de C. B.; FILIPPI, M. C. C. de; PRABHU, A. S. |
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Afiliação: |
RAFAELA ARAUJO GUIMARAES, UFG; VALACIA LEMES DA SILVA LOBO, CNPAF; MARCIO VINICIUS DE C BARROS CORTES, CNPAF; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; ANNE SITARAMA PRABHU, CNPAF. |
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Título: |
Characterization of Sarocladium oryzae and its reduction potential of rice leaf blast. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Tropical, v. 47, n. 1, p. 41-52, jan./mar. 2017. |
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ISSN: |
1983-4063 |
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DOI: |
10.1590/1983-40632016v4742738 |
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Idioma: |
Inglês |
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Conteúdo: |
The integrated management of rice leaf blast (Magnaporthe oryzae) is carried out mainly with the adoption of chemical control. However, the search for alternative practices has grown in recent years. Thus, the variability of 28 Sarocladium oryzae isolates was evaluated for the cerulenin production, as well as its potential for reducing the severity of rice leaf blast, quantifying the activity of enzymes linked to the plant defense mechanisms. More than 55 % of the S. oryzae isolates were antagonistic to the pathogens M. oryzae, Cochliobolus miyabeanus, Thanatephorus cucumeris and Monographella albescens, and 60 % of the isolates produced cerulenin at detectable levels. Both BRM 6461 (296.0 ug mL-1) and BRM 6493 (undetectable cerulenin) inhibited the formation of M. oryzae appressoria in 89.5 % and 85 %, respectively. The BRM 6461 isolate, applied as conidial suspension and filtered, reduced the severity of rice leaf blast in 68.8 % and 75.5 %, respectively. The enzymatic activity in the presence of M. oryzae was higher for lipoxygenase at 5 h (filtered) and at 24 h and 72 h (conidial suspension) after the pathogen inoculation. For phenylalanine ammonia lyase, the highest expression was at 5 h (filtered) and 72 h (conidial suspension). The enzymes chitinase, B-1,3-glucanase and peroxidase and the salicylic acid phytohormone presented no differences, in relation to the controls (water and M. oryzae). The filtered from the BRM 6461 isolate, basically constituted by cerulenin, reduced the severity of rice leaf blast and possibly activated the defense mechanisms of the rice plants against M. oryzae. MenosThe integrated management of rice leaf blast (Magnaporthe oryzae) is carried out mainly with the adoption of chemical control. However, the search for alternative practices has grown in recent years. Thus, the variability of 28 Sarocladium oryzae isolates was evaluated for the cerulenin production, as well as its potential for reducing the severity of rice leaf blast, quantifying the activity of enzymes linked to the plant defense mechanisms. More than 55 % of the S. oryzae isolates were antagonistic to the pathogens M. oryzae, Cochliobolus miyabeanus, Thanatephorus cucumeris and Monographella albescens, and 60 % of the isolates produced cerulenin at detectable levels. Both BRM 6461 (296.0 ug mL-1) and BRM 6493 (undetectable cerulenin) inhibited the formation of M. oryzae appressoria in 89.5 % and 85 %, respectively. The BRM 6461 isolate, applied as conidial suspension and filtered, reduced the severity of rice leaf blast in 68.8 % and 75.5 %, respectively. The enzymatic activity in the presence of M. oryzae was higher for lipoxygenase at 5 h (filtered) and at 24 h and 72 h (conidial suspension) after the pathogen inoculation. For phenylalanine ammonia lyase, the highest expression was at 5 h (filtered) and 72 h (conidial suspension). The enzymes chitinase, B-1,3-glucanase and peroxidase and the salicylic acid phytohormone presented no differences, in relation to the controls (water and M. oryzae). The filtered from the BRM 6461 isolate, basically constituted by cerulenin, r... Mostrar Tudo |
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Palavras-Chave: |
Biocontrole; Cerulenina. |
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Thesagro: |
Arroz; Atividade Enzimática; 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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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/168962/1/CNPAF-2017-patv47.pdf
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Marc: |
LEADER 02483naa a2200289 a 4500
001 2082492
005 2023-03-01
008 2017 bl uuuu u00u1 u #d
022 $a1983-4063
024 7 $a10.1590/1983-40632016v4742738$2DOI
100 1 $aGUIMARÃES, R. A.
245 $aCharacterization of Sarocladium oryzae and its reduction potential of rice leaf blast.$h[electronic resource]
260 $c2017
520 $aThe integrated management of rice leaf blast (Magnaporthe oryzae) is carried out mainly with the adoption of chemical control. However, the search for alternative practices has grown in recent years. Thus, the variability of 28 Sarocladium oryzae isolates was evaluated for the cerulenin production, as well as its potential for reducing the severity of rice leaf blast, quantifying the activity of enzymes linked to the plant defense mechanisms. More than 55 % of the S. oryzae isolates were antagonistic to the pathogens M. oryzae, Cochliobolus miyabeanus, Thanatephorus cucumeris and Monographella albescens, and 60 % of the isolates produced cerulenin at detectable levels. Both BRM 6461 (296.0 ug mL-1) and BRM 6493 (undetectable cerulenin) inhibited the formation of M. oryzae appressoria in 89.5 % and 85 %, respectively. The BRM 6461 isolate, applied as conidial suspension and filtered, reduced the severity of rice leaf blast in 68.8 % and 75.5 %, respectively. The enzymatic activity in the presence of M. oryzae was higher for lipoxygenase at 5 h (filtered) and at 24 h and 72 h (conidial suspension) after the pathogen inoculation. For phenylalanine ammonia lyase, the highest expression was at 5 h (filtered) and 72 h (conidial suspension). The enzymes chitinase, B-1,3-glucanase and peroxidase and the salicylic acid phytohormone presented no differences, in relation to the controls (water and M. oryzae). The filtered from the BRM 6461 isolate, basically constituted by cerulenin, reduced the severity of rice leaf blast and possibly activated the defense mechanisms of the rice plants against M. oryzae.
650 $aMagnaporthe oryzae
650 $aArroz
650 $aAtividade Enzimática
650 $aBrusone
650 $aDoença de planta
650 $aOryza sativa
653 $aBiocontrole
653 $aCerulenina
700 1 $aLOBO, V. L. da S.
700 1 $aCORTES, M. V. de C. B.
700 1 $aFILIPPI, M. C. C. de
700 1 $aPRABHU, A. S.
773 $tPesquisa Agropecuária Tropical$gv. 47, n. 1, p. 41-52, jan./mar. 2017.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
07/06/2005 |
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Data da última atualização: |
16/10/2017 |
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Autoria: |
SAITO, M. L.; POTT, A.; FERRAZ, J. M. G.; NASCIMENTO, R. dos S. |
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Afiliação: |
Embrapa Meio Ambiente; Embrapa Pantanal. |
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Título: |
Avaliação da atividade inseticida em espécies de plantas do Pantanal Matogrossense. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Jaguariúna: Embrapa Meio Ambiente, 2004. |
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Páginas: |
17p. il. |
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Série: |
(Embrapa Meio Ambiente. Boletim de Pesquisa e Desenvolvimento, 24). |
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Idioma: |
Português |
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Conteúdo: |
As substâncias produzidas por plantas através de metabolismo secundário, podem apresentar atividades biológicas diversas e algumas podem ser de interesse para aplicações em controle de insetos. Neste trabalho foram avaliadas 14 espécies de plantas do Pantanal Mato-grossense, quanto a atividade inseticida, utilizando como organismos-testes, Spodoptera frugiperda e Anticarsia gemmatalis. Os melhores resultados foram obtidos com Sebastiania hispida, Annona dioica, A. cornifolia, Fagara hassleriana e Unonopsis lindimanii. |
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Thesagro: |
Inseticida de Origem Vegetal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPMA/5373/1/boletim_24.pdf
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Marc: |
LEADER 01131nam a2200181 a 4500
001 1014227
005 2017-10-16
008 2004 bl uuuu u0uu1 u #d
100 1 $aSAITO, M. L.
245 $aAvaliação da atividade inseticida em espécies de plantas do Pantanal Matogrossense.$h[electronic resource]
260 $aJaguariúna: Embrapa Meio Ambiente$c2004
300 $a17p. il.
490 $a(Embrapa Meio Ambiente. Boletim de Pesquisa e Desenvolvimento, 24).
520 $aAs substâncias produzidas por plantas através de metabolismo secundário, podem apresentar atividades biológicas diversas e algumas podem ser de interesse para aplicações em controle de insetos. Neste trabalho foram avaliadas 14 espécies de plantas do Pantanal Mato-grossense, quanto a atividade inseticida, utilizando como organismos-testes, Spodoptera frugiperda e Anticarsia gemmatalis. Os melhores resultados foram obtidos com Sebastiania hispida, Annona dioica, A. cornifolia, Fagara hassleriana e Unonopsis lindimanii.
650 $aInseticida de Origem Vegetal
700 1 $aPOTT, A.
700 1 $aFERRAZ, J. M. G.
700 1 $aNASCIMENTO, R. dos S.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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