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Registro Completo |
Biblioteca(s): |
Embrapa Meio-Norte. |
Data corrente: |
29/06/2007 |
Data da última atualização: |
03/01/2024 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
BARRETO, A. L. H.; ELOY, Y. R. G.; MATOS, T. E. de; MARTINS-MIRANDA, A. S.; FREIRE, F. C. O.; FREIRE FILHO, F. R.; VASCONCELOS, I. M.; OLIVEIRA, J. T. A. |
Título: |
Host defense responses restricts the growth of the fungus Colletotrichum lindemuthianum in cowpea, TE 97 411-1E resistant genotype. |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. |
Descrição Física: |
1 CD-ROM. |
Série: |
(Embrapa Meio-Norte. Documentos, 121). |
Idioma: |
Inglês |
Conteúdo: |
Cowpea is the main subsistence crop in the semiarid North-east of Brazil. However, very few is known concerning to its defense mechanisms against fungi. The objective of this present work was to evaluate the infection strategies of the hemibiotrophic fungi Colletotrichum lindemuthianum and the associated cytological defense responses of two cowpea genotypes, TE 97-411-1E (resistant) and BR 3 Tracuateua (susceptible). The infection process of the fungi in both genotypes occurred preferentially through the leaf epidermal cells by penetration tubes emerged from appressoria. The resistant cowpea genotype, TE 97-411-1E, showed enhanced penetration resistance to C. lindemuthianum associated with higher epidermal H2O2 accumulation, papilla formation, and increase in phenylalanine ammonialyase activity, possibly related to accumulation of phenolic compounds and host cell wall lignification. Macroscopic examination of the primary leaves revealed the presence of shrunken necrotic lesions characteristic of anthracnose in infected BR 3 Tracuateua, whereas in TE 97-411-1E cell death was also observed but only in a reduced percentage of the infection sites. In summary the results obtained in the present study suggested that TE 97-411-1E genotype is more resistant to C. lindemuthianum compared to BR 3 Tracuateua, as it developed more effective defense responses against the establishment of the pathogen. |
Palavras-Chave: |
Colletotricum lindemuthianum; Feijão-caupi; Infection process; Processo de infecção. |
Thesagro: |
Colletotrichum Lindemuthianum; Vigna Unguiculata. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/94327/1/FS12.pdf
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Marc: |
LEADER 02497nam a2200289 a 4500 001 1068871 005 2024-01-03 008 2006 bl uuuu u00u1 u #d 100 1 $aBARRETO, A. L. H. 245 $aHost defense responses restricts the growth of the fungus Colletotrichum lindemuthianum in cowpea, TE 97 411-1E resistant genotype.$h[electronic resource] 260 $aIn: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte$c2006 300 $c1 CD-ROM. 490 $a(Embrapa Meio-Norte. Documentos, 121). 520 $aCowpea is the main subsistence crop in the semiarid North-east of Brazil. However, very few is known concerning to its defense mechanisms against fungi. The objective of this present work was to evaluate the infection strategies of the hemibiotrophic fungi Colletotrichum lindemuthianum and the associated cytological defense responses of two cowpea genotypes, TE 97-411-1E (resistant) and BR 3 Tracuateua (susceptible). The infection process of the fungi in both genotypes occurred preferentially through the leaf epidermal cells by penetration tubes emerged from appressoria. The resistant cowpea genotype, TE 97-411-1E, showed enhanced penetration resistance to C. lindemuthianum associated with higher epidermal H2O2 accumulation, papilla formation, and increase in phenylalanine ammonialyase activity, possibly related to accumulation of phenolic compounds and host cell wall lignification. Macroscopic examination of the primary leaves revealed the presence of shrunken necrotic lesions characteristic of anthracnose in infected BR 3 Tracuateua, whereas in TE 97-411-1E cell death was also observed but only in a reduced percentage of the infection sites. In summary the results obtained in the present study suggested that TE 97-411-1E genotype is more resistant to C. lindemuthianum compared to BR 3 Tracuateua, as it developed more effective defense responses against the establishment of the pathogen. 650 $aColletotrichum Lindemuthianum 650 $aVigna Unguiculata 653 $aColletotricum lindemuthianum 653 $aFeijão-caupi 653 $aInfection process 653 $aProcesso de infecção 700 1 $aELOY, Y. R. G. 700 1 $aMATOS, T. E. de 700 1 $aMARTINS-MIRANDA, A. S. 700 1 $aFREIRE, F. C. O. 700 1 $aFREIRE FILHO, F. R. 700 1 $aVASCONCELOS, I. M. 700 1 $aOLIVEIRA, J. T. A.
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Embrapa Meio-Norte (CPAMN) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
07/03/2009 |
Data da última atualização: |
22/11/2022 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
AZEVEDO, R.; ALVES, R. M.; CUNHA, R. L.; LIMA, L. B.; SANTOS, E. B. |
Afiliação: |
RONI DE AZEVEDO, CPATU; RAFAEL MOYSES ALVES, CPATU; ROBERTO LISBOA CUNHA, CPATU; Leomar Barros Lima, Emater-PA; Elcione Barbosa Santos, Emater-PA. |
Título: |
Avaliação de genótipos de girassol no sudeste do Estado do Pará. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE AGROENERGIA, 2008, Botucatu. Agroenergia e desenvolvimento sustentável: anais. Botucatu: Faculdade de Ciências Agronômicas, UNESP, 2008. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Pará; Sudeste Paraense. |
Thesagro: |
Genética Vegetal; Genótipo; Girassol; Pratica Cultural. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102526/1/6024.pdf
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Marc: |
LEADER 00778nam a2200241 a 4500 001 1409030 005 2022-11-22 008 2008 bl uuuu u00u1 u #d 100 1 $aAZEVEDO, R. 245 $aAvaliação de genótipos de girassol no sudeste do Estado do Pará.$h[electronic resource] 260 $aIn: SIMPÓSIO BRASILEIRO DE AGROENERGIA, 2008, Botucatu. Agroenergia e desenvolvimento sustentável: anais. Botucatu: Faculdade de Ciências Agronômicas, UNESP$c2008 650 $aAmazonia 650 $aGenética Vegetal 650 $aGenótipo 650 $aGirassol 650 $aPratica Cultural 653 $aBrasil 653 $aPará 653 $aSudeste Paraense 700 1 $aALVES, R. M. 700 1 $aCUNHA, R. L. 700 1 $aLIMA, L. B. 700 1 $aSANTOS, E. B.
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