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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
22/03/2008 |
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Data da última atualização: |
09/11/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARRETO, A. L. H.; VASCONCELOS, I. M.; GRANGEIRO, T. B.; MELO, V. M. M.; MATOS, T. E.; ELOY, Y. R. G.; FERNANDES, C. F.; TORRES, D. C.; FREIRE FILHO, F. R.; FREIRE, F. C. O.; OLIVEIRA, J. T. A. |
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Afiliação: |
ANA LUCIA HORTA BARRETO, CPAMN; ILKA M. VASCONCELOS; FRANCISCO RODRIGUES FREIRE FILHO, CPAMN. |
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Título: |
Infection process and host defense responses in compatible and incompatible interactions between Cowpea (Vigna unguiculata) and Colletotrichum gloeosporioides. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
International Journal of Plant Sciences, Chicago, v. 168, n. 2, p. 193-203, 2007. |
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ISSN: |
1058-5893 |
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Idioma: |
Inglês |
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Conteúdo: |
The infection process of Colletotrichum gloeosporioides was examined by light microscopy on two cowpea genotypes, BR 3 Tracuateua and TE 97-411. In the susceptible genotype BR 3 Tracuateua, the pathogen acted as an intracellular hemibiotroph. Invasion of cowpea primary leaves occurred preferentially through the leaf epidermal cells by penetration tubes that emerged from appressoria. The penetration tube swelled within 48 h to form a spherical infection vesicle inside the epidermal cell in a biotrophic interaction. Subsequently, it became multilobed and multiseptated. By 4 d after inoculation, one or more large primary hyphae emerged from the lateral lobes and grew intracellularly and further colonized several adjacent epidermal host cells, characterizing the necrotrophic phase of infection. Primary leaves of the resistant cowpea genotype, TE 97-411, showed enhanced penetration resistance to C. gloeosporioides associated with higher epidermal H2O2 accumulation beneath appressoria and primary germ tubes, papilla formation, and increased phenylalanine ammonia-lyase 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 the genotype TE 97-411, cell death was also observed but only in a reduced percentage of the infection sites. In summary, the results obtained in this study suggested that TE 97-411 is the resistant genotype to C. gloeosporioides compared with BR 3 Tracuateua because it developed more effective defense responses against the establishment of the pathogen. MenosThe infection process of Colletotrichum gloeosporioides was examined by light microscopy on two cowpea genotypes, BR 3 Tracuateua and TE 97-411. In the susceptible genotype BR 3 Tracuateua, the pathogen acted as an intracellular hemibiotroph. Invasion of cowpea primary leaves occurred preferentially through the leaf epidermal cells by penetration tubes that emerged from appressoria. The penetration tube swelled within 48 h to form a spherical infection vesicle inside the epidermal cell in a biotrophic interaction. Subsequently, it became multilobed and multiseptated. By 4 d after inoculation, one or more large primary hyphae emerged from the lateral lobes and grew intracellularly and further colonized several adjacent epidermal host cells, characterizing the necrotrophic phase of infection. Primary leaves of the resistant cowpea genotype, TE 97-411, showed enhanced penetration resistance to C. gloeosporioides associated with higher epidermal H2O2 accumulation beneath appressoria and primary germ tubes, papilla formation, and increased phenylalanine ammonia-lyase 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 the genotype TE 97-411, cell death was also observed but only in a reduced percentage of the infection sites. In summary, the results obtained in this stu... Mostrar Tudo |
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Palavras-Chave: |
Cowpea; Defense responses; Infection process. |
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Thesagro: |
Colletotrichum Gloeosporioides. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02659naa a2200301 a 4500
001 1069732
005 2023-11-09
008 2007 bl uuuu u00u1 u #d
022 $a1058-5893
100 1 $aBARRETO, A. L. H.
245 $aInfection process and host defense responses in compatible and incompatible interactions between Cowpea (Vigna unguiculata) and Colletotrichum gloeosporioides.
260 $c2007
520 $aThe infection process of Colletotrichum gloeosporioides was examined by light microscopy on two cowpea genotypes, BR 3 Tracuateua and TE 97-411. In the susceptible genotype BR 3 Tracuateua, the pathogen acted as an intracellular hemibiotroph. Invasion of cowpea primary leaves occurred preferentially through the leaf epidermal cells by penetration tubes that emerged from appressoria. The penetration tube swelled within 48 h to form a spherical infection vesicle inside the epidermal cell in a biotrophic interaction. Subsequently, it became multilobed and multiseptated. By 4 d after inoculation, one or more large primary hyphae emerged from the lateral lobes and grew intracellularly and further colonized several adjacent epidermal host cells, characterizing the necrotrophic phase of infection. Primary leaves of the resistant cowpea genotype, TE 97-411, showed enhanced penetration resistance to C. gloeosporioides associated with higher epidermal H2O2 accumulation beneath appressoria and primary germ tubes, papilla formation, and increased phenylalanine ammonia-lyase 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 the genotype TE 97-411, cell death was also observed but only in a reduced percentage of the infection sites. In summary, the results obtained in this study suggested that TE 97-411 is the resistant genotype to C. gloeosporioides compared with BR 3 Tracuateua because it developed more effective defense responses against the establishment of the pathogen.
650 $aColletotrichum Gloeosporioides
653 $aCowpea
653 $aDefense responses
653 $aInfection process
700 1 $aVASCONCELOS, I. M.
700 1 $aGRANGEIRO, T. B.
700 1 $aMELO, V. M. M.
700 1 $aMATOS, T. E.
700 1 $aELOY, Y. R. G.
700 1 $aFERNANDES, C. F.
700 1 $aTORRES, D. C.
700 1 $aFREIRE FILHO, F. R.
700 1 $aFREIRE, F. C. O.
700 1 $aOLIVEIRA, J. T. A.
773 $tInternational Journal of Plant Sciences, Chicago$gv. 168, n. 2, p. 193-203, 2007.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/11/2016 |
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Data da última atualização: |
05/12/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ABREU, U. G. P. de; DIAS, F. R. T.; BARIONI, L. G.; FASIABEN, M. do C. R.; LAMPERT, V. do N.; COSTA, F. P.; MOREIRA, J. M. M. A. P.; GOMES, E. G. |
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Afiliação: |
URBANO GOMES PINTO DE ABREU, CPAP; FERNANDO RODRIGUES TEIXEIRA DIAS, CPAP; LUIS GUSTAVO BARIONI, CNPTIA; MARIA DO CARMO RAMOS FASIABEN, CNPTIA; VINICIUS DO NASCIMENTO LAMPERT, CPPSUL; FERNANDO PAIM COSTA, CNPGC; JOSE MAURO M AVILA PAZ MOREIRA, CNPF; ELIANE GONCALVES GOMES, SGI. |
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Título: |
Greenhouse gas emissions intensity assessment in beef cattle production systems: a data envelopment analysis (DEA) approach with variable returns to scale. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. |
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Páginas: |
p. 195-199. |
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Idioma: |
Inglês |
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Notas: |
(Embrapa Gado de Corte. Documentos, 216). Coordenador Roberto Giolo de Almeida. II SIGEE. Disponível em: . Acesso em: 30 nov. 2016. |
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Conteúdo: |
This paper aims at evaluating the efficiency of beef cattle productive systems in the Cerrado, Pampa and Pantanal biomes, regarding their emissions intensity (CO2 equivalent per kilogram of carcass weight produced). |
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Thesagro: |
Efeito estufa; Gado de corte; Gas. |
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Thesaurus NAL: |
Beef cattle; Greenhouse gas emissions. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150884/1/abreu-greenhouse.pdf
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Marc: |
LEADER 01383nam a2200277 a 4500
001 2057454
005 2016-12-05
008 2016 bl uuuu u00u1 u #d
100 1 $aABREU, U. G. P. de
245 $aGreenhouse gas emissions intensity assessment in beef cattle production systems$ba data envelopment analysis (DEA) approach with variable returns to scale.$h[electronic resource]
260 $aIn: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa$c2016
300 $ap. 195-199.
500 $a(Embrapa Gado de Corte. Documentos, 216). Coordenador Roberto Giolo de Almeida. II SIGEE. Disponível em: <http://ainfo.cnptia.embrapa.br/digital/bitstream/item/150884/1/abreu-greenhouse.pdf>. Acesso em: 30 nov. 2016.
520 $aThis paper aims at evaluating the efficiency of beef cattle productive systems in the Cerrado, Pampa and Pantanal biomes, regarding their emissions intensity (CO2 equivalent per kilogram of carcass weight produced).
650 $aBeef cattle
650 $aGreenhouse gas emissions
650 $aEfeito estufa
650 $aGado de corte
650 $aGas
700 1 $aDIAS, F. R. T.
700 1 $aBARIONI, L. G.
700 1 $aFASIABEN, M. do C. R.
700 1 $aLAMPERT, V. do N.
700 1 $aCOSTA, F. P.
700 1 $aMOREIRA, J. M. M. A. P.
700 1 $aGOMES, E. G.
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Embrapa Pantanal (CPAP) |
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