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Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
14/03/2008 |
Data da última atualização: |
03/04/2008 |
Tipo da produção científica: |
Documentos |
Autoria: |
CASTELO BRANCO, M. |
Afiliação: |
MARINA CASTELO BRANCO, 257541, EMBRAPA HORTALIÇAS. |
Título: |
Relatório final de projeto: pólen como marcador para identificação de fontes de alimentação de adultos de traça-do-tomateiro (Tuta absoluta) vaquinha (Diabrotica speciosa) |
Ano de publicação: |
2006 |
Fonte/Imprenta: |
Brasília, DF: Embrapa Hortaliças, 2006. |
Páginas: |
13 p. |
Série: |
(Embrapa Hortaliças. Documentos, 98). |
Idioma: |
Português |
Palavras-Chave: |
Traça-do-tomateiro. |
Thesagro: |
Agricultura; Alimentação; Diabrotica Speciosa; Inseto; Marcador Molecular; Pólen; Praga; Tuta Absoluta; Vaquinha. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00774nam a2200241 a 4500 001 1781387 005 2008-04-03 008 2006 bl uuuu u0uu1 u #d 100 1 $aCASTELO BRANCO, M. 245 $aRelatório final de projeto$bpólen como marcador para identificação de fontes de alimentação de adultos de traça-do-tomateiro (Tuta absoluta) vaquinha (Diabrotica speciosa) 260 $aBrasília, DF: Embrapa Hortaliças$c2006 300 $a13 p. 490 $a(Embrapa Hortaliças. Documentos, 98). 650 $aAgricultura 650 $aAlimentação 650 $aDiabrotica Speciosa 650 $aInseto 650 $aMarcador Molecular 650 $aPólen 650 $aPraga 650 $aTuta Absoluta 650 $aVaquinha 653 $aTraça-do-tomateiro
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Registro Completo
Biblioteca(s): |
Embrapa Meio-Norte. |
Data corrente: |
22/03/2008 |
Data da última atualização: |
09/11/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
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. |
Afiliação: |
ANA LUCIA HORTA BARRETO, CPAMN; ILKA M. VASCONCELOS; FRANCISCO RODRIGUES FREIRE FILHO, CPAMN. |
Título: |
Infection process and host defense responses in compatible and incompatible interactions between Cowpea (Vigna unguiculata) and Colletotrichum gloeosporioides. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
International Journal of Plant Sciences, Chicago, v. 168, n. 2, p. 193-203, 2007. |
ISSN: |
1058-5893 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Cowpea; Defense responses; Infection process. |
Thesagro: |
Colletotrichum Gloeosporioides. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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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