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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
14/03/2011 |
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Data da última atualização: |
14/04/2011 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
RAMIRO, D. A.; ESCOUTE, J.; PETITOT, A.-S.; MALUF, M. P.; FERNANDEZ, D. |
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Afiliação: |
IRD; CIRAD; IRD; MIRIAN PEREZ MALUF, SAPC; IRD/CIRAD. |
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Título: |
Early haustoria development in coffee (Coffea arabica) - rust (hemileia vastatrix) interaction. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22. 2008, Campinas, São Paulo, Brazil. |
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Idioma: |
Inglês |
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Conteúdo: |
According to their lifestyle, plants parasitic fungi may be classified in necrotrophs which obtain nutrients from dead cells or biotrophs which obtain nutrients from living host tissue. A common feature of the biotrophs is the formation of specialized structures called haustoria, which are responsible for uptake of nutrients from the host cells they invaded. Avirulence (Avr) genes and their respective products that are recognized by the resistance proteins inside host cells may be specifically expressed in haustoria, leading to the rapid activation of defense responses against the fungus. The objective of this study was to assess the time-course of the orange rust fungus (Hemileia vastatrix) haustoria differentiation in coffee (Coffea arabica). Histological characterization of H. vastatrix (race II) development in Tupi (immune) and Catuai (sporulation level 4) was assessed by light microscopy examination of cross sections of infected leaf fragments stained with lactophenol blue. In both interactions, careful examination of infection sites made at 600x revealed that haustorial differentiation occurred as soon as the fungus enters stomata, much earlier than previously described in the literature. Haustorium mother cell (HMC) and haustoria (termed “pioneers haustoria”) were found in the guard and adjacent cells of the stomata, before the colonization of parenchyma had occurred. In all interactions, after pioneer haustoria differentiation, the fungus displayed the usual sequence of growth stages: anchor, new HMC and haustoria development in stomatal cells and in the parenchyma. Until 36 hours after inoculation, rust development in the two cultivars did not differ. Examination of host cell death, characteristic of the hypersensitive reaction in resistant varieties, and of defense genes regulation during rust infection are currently being examined to assess the coffee resistance responses linked to pioneers haustoria formation. MenosAccording to their lifestyle, plants parasitic fungi may be classified in necrotrophs which obtain nutrients from dead cells or biotrophs which obtain nutrients from living host tissue. A common feature of the biotrophs is the formation of specialized structures called haustoria, which are responsible for uptake of nutrients from the host cells they invaded. Avirulence (Avr) genes and their respective products that are recognized by the resistance proteins inside host cells may be specifically expressed in haustoria, leading to the rapid activation of defense responses against the fungus. The objective of this study was to assess the time-course of the orange rust fungus (Hemileia vastatrix) haustoria differentiation in coffee (Coffea arabica). Histological characterization of H. vastatrix (race II) development in Tupi (immune) and Catuai (sporulation level 4) was assessed by light microscopy examination of cross sections of infected leaf fragments stained with lactophenol blue. In both interactions, careful examination of infection sites made at 600x revealed that haustorial differentiation occurred as soon as the fungus enters stomata, much earlier than previously described in the literature. Haustorium mother cell (HMC) and haustoria (termed “pioneers haustoria”) were found in the guard and adjacent cells of the stomata, before the colonization of parenchyma had occurred. In all interactions, after pioneer haustoria differentiation, the fungus displayed the usual sequence... Mostrar Tudo |
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Palavras-Chave: |
Coffee; Parasitic fungi. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02546nam a2200181 a 4500
001 1880633
005 2011-04-14
008 2008 bl uuuu u00u1 u #d
100 1 $aRAMIRO, D. A.
245 $aEarly haustoria development in coffee (Coffea arabica) - rust (hemileia vastatrix) interaction.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22. 2008, Campinas, São Paulo, Brazil.$c2008
520 $aAccording to their lifestyle, plants parasitic fungi may be classified in necrotrophs which obtain nutrients from dead cells or biotrophs which obtain nutrients from living host tissue. A common feature of the biotrophs is the formation of specialized structures called haustoria, which are responsible for uptake of nutrients from the host cells they invaded. Avirulence (Avr) genes and their respective products that are recognized by the resistance proteins inside host cells may be specifically expressed in haustoria, leading to the rapid activation of defense responses against the fungus. The objective of this study was to assess the time-course of the orange rust fungus (Hemileia vastatrix) haustoria differentiation in coffee (Coffea arabica). Histological characterization of H. vastatrix (race II) development in Tupi (immune) and Catuai (sporulation level 4) was assessed by light microscopy examination of cross sections of infected leaf fragments stained with lactophenol blue. In both interactions, careful examination of infection sites made at 600x revealed that haustorial differentiation occurred as soon as the fungus enters stomata, much earlier than previously described in the literature. Haustorium mother cell (HMC) and haustoria (termed “pioneers haustoria”) were found in the guard and adjacent cells of the stomata, before the colonization of parenchyma had occurred. In all interactions, after pioneer haustoria differentiation, the fungus displayed the usual sequence of growth stages: anchor, new HMC and haustoria development in stomatal cells and in the parenchyma. Until 36 hours after inoculation, rust development in the two cultivars did not differ. Examination of host cell death, characteristic of the hypersensitive reaction in resistant varieties, and of defense genes regulation during rust infection are currently being examined to assess the coffee resistance responses linked to pioneers haustoria formation.
653 $aCoffee
653 $aParasitic fungi
700 1 $aESCOUTE, J.
700 1 $aPETITOT, A.-S.
700 1 $aMALUF, M. P.
700 1 $aFERNANDEZ, D.
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Registro original: |
Embrapa Café (CNPCa) |
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| Registros recuperados : 36 | |
| 6. |  | SANTOS, A. da S. dos; SANTOS, J. L. dos; FERNANDEZ, D.; CURADO, F. F. Participatory evaluation of varieties of maize landraces in the state of Paraiba, Brazil. In: ANNUAL MEETING OF THE SOCIETY FOR ECONOMIC BOTANY, 51., 2010, Xalapa. Agrobiodiversity: lessons form conservation and local development: proceedings. Xalapa, Veracruz: Society for Economic Botany, 2010. p. 93. 1 resumo.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 8. | | RAMIRO, D. A.; TOMA-BRAGHINI, M.; PETITOT, A. -S.; MALUF, M. P.; FERNANDEZ, D. Use of leaf-disk technique for gene expression analysis of the coffee responses to Hemileia vastatrix Infection. In:INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 21., 2006, Montpellier, France. Table of contents... Montpellier, France: Association for Science and Information on Coffee, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Café. |
|  |
| 9. | | ALBUQUERQUE, E. V. S.; LECOULS, A. C.; PETITOT, A. S.; GROSSI DE SÁ, M. F.; FERNANDEZ, D. Early resistance responses of coffee (coffea arabica) to root-knot nematode (Meloidogyne spp.) infection. In: INTERNATIONAL CONGRESS OF NEMATOLOGY, 5, 2008, Brisbane, Australia. Nematodes: 5ICN: down under. [S.l.]: Australasian Association of Nematologists, 2008. p. 128.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 12. | | BARROS, E. V. S. A.; LECOULS, A. C.; OLIVEIRA, P. E. F.; SILVA, F. R. da; CARNEIRO, R. M. D. G.; FERNANDEZ, D.; GROSSI de SÁ, M. F. Construção e análise de uma biblioteca subtrativa de cDNAs de plantas Coffea arabica inoculada e não inoculada com o nematóide da galha Meloidogyne paranaensis. In: CONGRESSO BRASILEIRO DE GENÉTICA, 51., 2005, Águas de Lindóia, SP. A era da genômica: da bioestatística à bioinformática: anais. Ribeirão Preto, SP: Sociedade Brasileira de Genética, 2005. p. 449.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 13. | | BARROS, E. V. S. A.; LECOULS, A. C.; OLIVEIRA, P. E. F.; SILVA, F. R.; CARNEIRO, R. M. D. G.; FERNANDEZ, D.; GROSSI-de-SÁ, M. F. Construção e análise de uma biblioteca subtrativa de cDNAs de plantas Coffea arabica inoculada e não inoculada com o nematóide da galha Meloidogyne paranaensis. In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 10., 2005, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2005. p. 59.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 14. | | VIDAL, L. de A.; ALMEIDA, J. D. de; PINTO, E. R. de C.; VEIGA, A. D.; FERNANDEZ, D.; GUERREIRO FILHO, O.; ALBUQUERQUE, E. V. S. de. Obtenção de RNA de bicho-mineiro (Leucoptera coffeella) para transcritômica e silenciamento gênico. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 10., 2019, Vitória, ES. Pesquisa, inovação e sustentabilidade dos cafés do Brasil. Brasília, DF: Embrapa Café, 2019.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 15. | | MATTOS, V. da S.; MULET, K.; CARES, J. E.; GOMES, C. B.; FERNANDEZ, D.; SA, M. F. G. de; CARNEIRO, R. M. D. G.; CASTAGNONE-SERENO, P. Development of Diagnostic SCAR Markers for Meloidogyne graminicola, M. Oryzae, and M. salasi associated with irrigated rice fields in Americas. Plant Disease, v. 103, p. 83-88, Jan. 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Clima Temperado; Embrapa Recursos Genéticos e Biotecnologia. |
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| 16. | | LIMA, J. D.; MAIGRET, B.; FERNANDEZ, D.; DECLOQUEMENT, J.; PINHO, D.; ALBUQUERQUE, E. V. S.; RODRIGUES, M. O.; MARTINS, N. F. Searching in silico novel targets for specific coffee rust disease control. Lecture Notes in Computer Science, 11347 LNBI, p. 109-115, 2020. Including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| 17. | | ALBUQUERQUE, E. V. S.; CUNHA, W. G.; BARBOSA, A. E. A. D.; COSTA, P. M.; TEIXEIRA, J. B.; VIANNA, G. R.; CABRAL, G. B.; FERNANDEZ, D. Transgenic coffee fruits from Coffea arabica genetically modified by bombardment. In Vitro Cellular & Developmental Biology: plant, v.45, n.5, p. 532-539, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 18. | | MATTOS, V. S.; MULLET, K.; JUVENIL ENRIQUE, C.; GOMES, C. B.; FERNANDEZ, D.; DE SÁ, M. F. G.; CARNEIRO, R. M. D. G.; CASTAGNONE-SERENO, P. Variabilidade intraespecífica de isolados de meloidogyne spp. do arroz e marcadores scar para identificação de m. graminicola, M. oryzae E M. salasi. In: CONGRESSO BRASILEIRO DE NEMATOLOGIA, 35, 2018, Bento Gonçalves, RS.; Nematologia: problemas emergentes e estratégias de manejo. Anais, palestras e resumos... Pelotas: Embrapa Clima Temperado: Sociedade Brasileira de Nematologia: Bento Gonçalves, 2018. p. 145-146| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 19. | | MATTOS, V. S.; MULLET, K.; JUVENIL ENRIQUE, C.; GOMES, C. B.; FERNANDEZ, D.; DE SÁ, M. F. G.; CARNEIRO, R. M. D. G.; CASTAGNONE-SERENO, P. Variabilidade intraespecífica de isolados de meloidogyne spp. do arroz e marcadores scar para identificação de m. graminicola, M. oryzae E M. salasi. In: CONGRESSO BRASILEIRO DE NEMATOLOGIA, 35, 2018, Bento Gonçalves, RS.; Nematologia: problemas emergentes e estratégias de manejo. Anais, palestras e resumos... Pelotas: Embrapa Clima Temperado: Sociedade Brasileira de Nematologia: Bento Gonçalves, 2018. 239 p. p. 145-146| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 20. | | VIDAL, L. de A.; GRYNBERG, P.; PETITOT, A.-S.; MOTA, A. P. Z.; TOGAWA, R. C.; FERNANDEZ, D.; FREIRE, E. V. S. A. Validação de sequências candidatas de silenciamento gênico de Meloidogyne Incógnita. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 10., 2019, Vitória, ES. Pesquisa, inovação e sustentabilidade dos cafés do Brasil. Brasília, DF: Embrapa Café, 2019.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 36 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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