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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
19/11/1996 |
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Data da última atualização: |
13/08/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PINHEIRO, R. R.; SANTA ROSA, J. |
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Afiliação: |
RAYMUNDO RIZALDO PINHEIRO, CNPC; JANETE SANTA ROSA, CNPC. |
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Título: |
Clinical symptoms and histological alterations in goats intoxicated with (Ipomoea asarifolia) salsa. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
In: CONGRESSO PANAMERICANO DE CIÊNCIAS VETERINÁRIAS, 15., 1996, Campo Grande, MS. Resumos... Campo Grande, MS: Associação Panamericana de Ciências Veterinárias, 1996. p. 160. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Alteracao; Alteration; Envenenamento; Intoxication; Ipomoea asarifolia. |
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Thesagro: |
Caprino; Intoxicação; Planta tóxica; Salsa. |
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Thesaurus Nal: |
Goats; Phytotoxins; Poisoning; Toxicity. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 00883nam a2200265 a 4500
001 1514593
005 2021-08-13
008 1996 bl uuuu u00u1 u #d
100 1 $aPINHEIRO, R. R.
245 $aClinical symptoms and histological alterations in goats intoxicated with (Ipomoea asarifolia) salsa.$h[electronic resource]
260 $aIn: CONGRESSO PANAMERICANO DE CIÊNCIAS VETERINÁRIAS, 15., 1996, Campo Grande, MS. Resumos... Campo Grande, MS: Associação Panamericana de Ciências Veterinárias, 1996. p. 160.$c1996
650 $aGoats
650 $aPhytotoxins
650 $aPoisoning
650 $aToxicity
650 $aCaprino
650 $aIntoxicação
650 $aPlanta tóxica
650 $aSalsa
653 $aAlteracao
653 $aAlteration
653 $aEnvenenamento
653 $aIntoxication
653 $aIpomoea asarifolia
700 1 $aSANTA ROSA, J.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Voltar
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| Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
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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Embrapa Café (CNPCa) |
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