| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Café. |
|
Data corrente: |
14/03/2011 |
|
Data da última atualização: |
14/04/2011 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
RAMIRO, D. A.; ESCOUTE, J.; PETITOT, A.-S.; MALUF, M. P.; FERNANDEZ, D. |
|
Afiliação: |
IRD; CIRAD; IRD; MIRIAN PEREZ MALUF, SAPC; IRD/CIRAD. |
|
Título: |
Early haustoria development in coffee (Coffea arabica) - rust (hemileia vastatrix) interaction. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22. 2008, Campinas, São Paulo, Brazil. |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Coffee; Parasitic fungi. |
|
Categoria do assunto: |
-- |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Café (CNPCa) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
19/12/2020 |
|
Data da última atualização: |
06/09/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
PAULITSCH, F.; DALL'AGNOL, R. F.; DELAMUTA, J. R. M.; RIBEIRO, R. A.; BATISTA, J. S. da S.; HUNGRIA, M. |
|
Afiliação: |
MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
|
Título: |
Paraburkholderia atlantica sp. nov. and Paraburkholderia franconis sp. nov., two new nitrogen-fixing nodulating species isolated from Atlantic forest soils in Brazil. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Archives of Microbiology, v. 202, p. 1369-1380, 2020. |
|
DOI: |
10.1007/s00203-020-01843-w |
|
Idioma: |
Inglês |
|
Palavras-Chave: |
Atlantic forest; Mata atlântica. |
|
Thesagro: |
Filogenia; Fixação de Nitrogênio; Taxonomia. |
|
Thesaurus NAL: |
Nitrogen fixation; Phylogeny; Taxonomy. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219470/1/ID-40045.pdf
|
|
Marc: |
LEADER 00904naa a2200277 a 4500
001 2128460
005 2021-09-06
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1007/s00203-020-01843-w$2DOI
100 1 $aPAULITSCH, F.
245 $aParaburkholderia atlantica sp. nov. and Paraburkholderia franconis sp. nov., two new nitrogen-fixing nodulating species isolated from Atlantic forest soils in Brazil.$h[electronic resource]
260 $c2020
650 $aNitrogen fixation
650 $aPhylogeny
650 $aTaxonomy
650 $aFilogenia
650 $aFixação de Nitrogênio
650 $aTaxonomia
653 $aAtlantic forest
653 $aMata atlântica
700 1 $aDALL'AGNOL, R. F.
700 1 $aDELAMUTA, J. R. M.
700 1 $aRIBEIRO, R. A.
700 1 $aBATISTA, J. S. da S.
700 1 $aHUNGRIA, M.
773 $tArchives of Microbiology$gv. 202, p. 1369-1380, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
|
|
| Registros recuperados : 1.130 | |
| 1123. |  | 0901690, VINHOS DO BRASIL, Bento Gonçalves, RS.
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Uva e Vinho. |   |
| 1124. | | 4700721, WMO BULLETIN, World Meteorological Organization, Geneva-Suica
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Agropecuária Oeste; Embrapa Cerrados. | |
| 1125. | | 3000065, WOOD RESEARCH, Wood Research Institute, Kyoto-Japao
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Amazônia Oriental; Embrapa Florestas. | |
| 1126. | | 2650253, WORLD'S POULTRY SCIENCE JOURNAL, World's Poultry Science Association, Bucks-Inglaterra
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Suínos e Aves. | |
| 1127. | | 0904479, XXI CIÊNCIA PARA A VIDA, Embrapa. Secretaria de Comunicação, Brasília, DF.
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Acre; Embrapa Agricultura Digital; Embrapa Agrobiologia; Embrapa Agroindústria de Alimentos; Embrapa Agroindústria Tropical; Embrapa Agropecuária Oeste; Embrapa Algodão; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão; Embrapa Caprinos e Ovinos; Embrapa Cerrados; Embrapa Clima Temperado; Embrapa Cocais; Embrapa Florestas; Embrapa Gado de Corte; Embrapa Gado de Leite; Embrapa Hortaliças; Embrapa Meio Ambiente; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Pantanal; Embrapa Pecuária Sudeste; Embrapa Semiárido; Embrapa Soja; Embrapa Solos; Embrapa Tabuleiros Costeiros; Embrapa Territorial; Embrapa Trigo; Embrapa Unidades Centrais; Embrapa Uva e Vinho. MenosCatálogo Coletivo de Periódicos Embrapa; Embrapa Acre; Embrapa Agricultura Digital; Embrapa Agrobiologia; Embrapa Agroindústria de Alimentos; Embrapa Agroindústria Tropical; Embrapa Agropecuária Oeste; Embrapa Algodão; Embrapa Amapá; Embrapa Amazônia Ocidental... Mostrar Todas | |
| 1128. | | 0900677, ZEBU NO BRASIL, Associacao Brasileira de Criadores de Zebu, Uberaba-MG
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Amazônia Oriental; Embrapa Cerrados; Embrapa Gado de Corte; Embrapa Gado de Leite; Embrapa Meio-Norte; Embrapa Pantanal; Embrapa Rondônia; Embrapa Semiárido. | |
| 1130. | | 0904586, ZOOLOGIA (CURITIBA), Sociedade Brasileira de Zoologia, Curitiba, PR
Biblioteca(s): Catálogo Coletivo de Periódicos Embrapa; Embrapa Cerrados. | |
| Registros recuperados : 1.130 | |
|
|
|
