| |
|
|
 | 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 Florestas. |
|
Data corrente: |
19/05/2021 |
|
Data da última atualização: |
08/09/2021 |
|
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
|
Autoria: |
BARBOSA, L. R.; QUEIROZ, D. L. de; NICKELE, M. A.; QUEIROZ, E. C. de; REIS FILHO, W.; IEDE, E. T.; PENTEADO, S. do R. C. |
|
Afiliação: |
LEONARDO RODRIGUES BARBOSA, CNPF; DALVA LUIZ DE QUEIROZ, CNPF; MARIANE APARECIDA NICKELE, Doutorado em Ciências Biológicas pela UFPR; ELISIANE CASTRO DE QUEIROZ, Laboratorista da Funcema; WILSON REIS FILHO, Pesquisador da Epagri; EDSON TADEU IEDE, Pesquisador aposentado da Embrapa Florestas; SUSETE DO ROCIO CHIARELLO PENTEADO, CNPF. |
|
Título: |
Pragas de eucaliptos. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
In: OLIVEIRA, E. B. de; PINTO JUNIOR, J. E. (Ed.). O eucalipto e a Embrapa: quatro décadas de pesquisa e desenvolvimento. Brasília, DF: Embrapa, 2021. cap. 19. |
|
Páginas: |
p. 751-780. |
|
Descrição Física: |
il. color. |
|
ISBN: |
978-65-87380-04-9 |
|
Idioma: |
Português |
|
Conteúdo: |
RESUMO. Árvores dos gêneros Eucalyptus e Corymbia (Myrtaceae) são amplamente cultivadas na silvicultura brasileira, recobrindo aproximadamente 5,6 milhões de hectares. As plantações de eucaliptos têm grande importância econômica para o País, representando uma das mais importantes fontes de fibra para a indústria de celulose e papel. As condições edafoclimáticas e os plantios extensivos com reduzida diversidade genética têm aumentado a adaptação de pragas nativas e favorecido o estabelecimento e a dispersão de pragas exóticas no Brasil. A diversidade de pragas do eucalipto no Brasil, inclui espécies nativas como formigas cortadeiras, lepidópteros e besouros desfolhadores, grilos e cupins e espécies exóticas como o gorgulho-do-eucalipto, a broca-do-eucalipto, os psilídeos, o ácaro-do-eucalipto, a microvespa-do-citriodora, a vespa-da-galha e o percevejo-bronzeado. A Embrapa Florestas trabalha na elaboração e implementação de programas de Manejo Integrado de Pragas (MIP), a fim de reduzir os danos ou deter o avanço de pragas nos plantios florestais no Brasil. Este capítulo aborda as principais pesquisas desenvolvidas pela equipe da Embrapa Florestas sobre pragas nativas e exóticas de eucalipto, bem como as medidas fitossanitárias para proteção contra pragas. ABSTRACT. Trees of the genus Eucalyptus (Myrtaceae) are widely cultivated for forestry in Brazil, covering approximately 5.6 million hectares. Eucalypt plantations are significant to the country’s economy, particularly because they represent one of the most important sources of fiber for the pulp and paper industry. In Brazil, the edaphoclimatic conditions and occurrence of extensive plantations with limited genetic diversity have enabled the adaptation of native pests as well as the establishment and spread of exotic pests. The range of native eucalypt pests in Brazil include leaf-cutting ants, defoliating caterpillars and beetles, crickets and termites, and exotic pests include the Eucalyptus wood borer, snout beetle, psyllids, mites, gall wasps and bronze bug. Embrapa Forestry’s Forest Entomology Laboratory team works to develop and implement Integrated Pest Management (IPM) systems to reduce damage or stop the advance of pests in forest plantations in Brazil. This chapter focuses on the main research activities conducted by Embrapa on native and exotic eucalypt pests and phytosanitary measures for protection. MenosRESUMO. Árvores dos gêneros Eucalyptus e Corymbia (Myrtaceae) são amplamente cultivadas na silvicultura brasileira, recobrindo aproximadamente 5,6 milhões de hectares. As plantações de eucaliptos têm grande importância econômica para o País, representando uma das mais importantes fontes de fibra para a indústria de celulose e papel. As condições edafoclimáticas e os plantios extensivos com reduzida diversidade genética têm aumentado a adaptação de pragas nativas e favorecido o estabelecimento e a dispersão de pragas exóticas no Brasil. A diversidade de pragas do eucalipto no Brasil, inclui espécies nativas como formigas cortadeiras, lepidópteros e besouros desfolhadores, grilos e cupins e espécies exóticas como o gorgulho-do-eucalipto, a broca-do-eucalipto, os psilídeos, o ácaro-do-eucalipto, a microvespa-do-citriodora, a vespa-da-galha e o percevejo-bronzeado. A Embrapa Florestas trabalha na elaboração e implementação de programas de Manejo Integrado de Pragas (MIP), a fim de reduzir os danos ou deter o avanço de pragas nos plantios florestais no Brasil. Este capítulo aborda as principais pesquisas desenvolvidas pela equipe da Embrapa Florestas sobre pragas nativas e exóticas de eucalipto, bem como as medidas fitossanitárias para proteção contra pragas. ABSTRACT. Trees of the genus Eucalyptus (Myrtaceae) are widely cultivated for forestry in Brazil, covering approximately 5.6 million hectares. Eucalypt plantations are significant to the country’s economy, particularly becau... Mostrar Tudo |
|
Palavras-Chave: |
Controle de pragas; Dano florestal; Embrapa Florestas; Monitoramento. |
|
Thesagro: |
Entomologia; Eucalipto; Historia; Inseto; Pesquisa Florestal; Praga de Planta. |
|
Thesaurus NAL: |
Eucalyptus. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/223333/1/EmbrapaFlorestas-2021-LV-EucaliptoEmbrapa-cap19.pdf
|
|
Marc: |
LEADER 03471naa a2200349 a 4500
001 2131898
005 2021-09-08
008 2021 bl uuuu u00u1 u #d
020 $a978-65-87380-04-9
100 1 $aBARBOSA, L. R.
245 $aPragas de eucaliptos.$h[electronic resource]
260 $c2021
300 $ap. 751-780.$cil. color.
520 $aRESUMO. Árvores dos gêneros Eucalyptus e Corymbia (Myrtaceae) são amplamente cultivadas na silvicultura brasileira, recobrindo aproximadamente 5,6 milhões de hectares. As plantações de eucaliptos têm grande importância econômica para o País, representando uma das mais importantes fontes de fibra para a indústria de celulose e papel. As condições edafoclimáticas e os plantios extensivos com reduzida diversidade genética têm aumentado a adaptação de pragas nativas e favorecido o estabelecimento e a dispersão de pragas exóticas no Brasil. A diversidade de pragas do eucalipto no Brasil, inclui espécies nativas como formigas cortadeiras, lepidópteros e besouros desfolhadores, grilos e cupins e espécies exóticas como o gorgulho-do-eucalipto, a broca-do-eucalipto, os psilídeos, o ácaro-do-eucalipto, a microvespa-do-citriodora, a vespa-da-galha e o percevejo-bronzeado. A Embrapa Florestas trabalha na elaboração e implementação de programas de Manejo Integrado de Pragas (MIP), a fim de reduzir os danos ou deter o avanço de pragas nos plantios florestais no Brasil. Este capítulo aborda as principais pesquisas desenvolvidas pela equipe da Embrapa Florestas sobre pragas nativas e exóticas de eucalipto, bem como as medidas fitossanitárias para proteção contra pragas. ABSTRACT. Trees of the genus Eucalyptus (Myrtaceae) are widely cultivated for forestry in Brazil, covering approximately 5.6 million hectares. Eucalypt plantations are significant to the country’s economy, particularly because they represent one of the most important sources of fiber for the pulp and paper industry. In Brazil, the edaphoclimatic conditions and occurrence of extensive plantations with limited genetic diversity have enabled the adaptation of native pests as well as the establishment and spread of exotic pests. The range of native eucalypt pests in Brazil include leaf-cutting ants, defoliating caterpillars and beetles, crickets and termites, and exotic pests include the Eucalyptus wood borer, snout beetle, psyllids, mites, gall wasps and bronze bug. Embrapa Forestry’s Forest Entomology Laboratory team works to develop and implement Integrated Pest Management (IPM) systems to reduce damage or stop the advance of pests in forest plantations in Brazil. This chapter focuses on the main research activities conducted by Embrapa on native and exotic eucalypt pests and phytosanitary measures for protection.
650 $aEucalyptus
650 $aEntomologia
650 $aEucalipto
650 $aHistoria
650 $aInseto
650 $aPesquisa Florestal
650 $aPraga de Planta
653 $aControle de pragas
653 $aDano florestal
653 $aEmbrapa Florestas
653 $aMonitoramento
700 1 $aQUEIROZ, D. L. de
700 1 $aNICKELE, M. A.
700 1 $aQUEIROZ, E. C. de
700 1 $aREIS FILHO, W.
700 1 $aIEDE, E. T.
700 1 $aPENTEADO, S. do R. C.
773 $tIn: OLIVEIRA, E. B. de; PINTO JUNIOR, J. E. (Ed.). O eucalipto e a Embrapa: quatro décadas de pesquisa e desenvolvimento. Brasília, DF: Embrapa, 2021. cap. 19.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
