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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
16/04/2004 |
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Data da última atualização: |
16/04/2004 |
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Autoria: |
GOMEZ-VASQUEZ, R.; DAY, R. C.; BEECHING, J. R.; COOPER, R. M. |
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Título: |
Biochemical components of disease resistance of cassava. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Revista Brasileira de Mandioca, Salvador, v. 17, p. 40, nov., 1998., Suplemento. |
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Idioma: |
Inglês |
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Conteúdo: |
Resistant genotypes offer the only durable, practicable means of controlling Xanthomonas bacterial bligth, but the nature of defences of cassava to this and to other diseases are virtually unknown. Suspension cultured cells in vitro show a series of resistance related responses to a range of microbial elicitors such as glucans from yeast and Colletotrichum, and to certain endogenous elicitors such as oligogalacturonides, jasmonic acid and glutathione. Surprisingly, pure LPS was ineffective but crude commercial EPS [xanthan] had effect. Auxin levels had a profound influence on intensity of cellular responses. This facile system has revealed a rapid [from 3 mins] and intensive, extracellular oxidative burst [as MO2] which can function as a first fine of defence by creating toxic Conditions, cross-linking cell wall components and as a diffusible signal. Subsequently, defence-related genes such as PAL are induced which may contribute to formation of flavonoids and antibacterial compounds. The oxidative burst may derive in part from the increased activity or production of peroxidase or from xanthine oxidase which is constitutive; gene[s] for the latter are under study. Similarly, in plants in response to incompatible bacterial pathogens, there is rapid generation of peroxide associated with plant cell walls, as revealed by cerium chloride and transmission EM; other localised increased were in peroxidase, PAL and its mRNA [revealed by in situ hybridisation], flavonoids and unknown antibacterial compounds. Catalase was down-regulated which may serve to maintain high levels of peroxide. Latex is readily released on cell damage and contains constitutuve Iysozyme but it has relatively little effect on X campestris pv. manihotis [syn. Xanonopodis]. Menos Resistant genotypes offer the only durable, practicable means of controlling Xanthomonas bacterial bligth, but the nature of defences of cassava to this and to other diseases are virtually unknown. Suspension cultured cells in vitro show a series of resistance related responses to a range of microbial elicitors such as glucans from yeast and Colletotrichum, and to certain endogenous elicitors such as oligogalacturonides, jasmonic acid and glutathione. Surprisingly, pure LPS was ineffective but crude commercial EPS [xanthan] had effect. Auxin levels had a profound influence on intensity of cellular responses. This facile system has revealed a rapid [from 3 mins] and intensive, extracellular oxidative burst [as MO2] which can function as a first fine of defence by creating toxic Conditions, cross-linking cell wall components and as a diffusible signal. Subsequently, defence-related genes such as PAL are induced which may contribute to formation of flavonoids and antibacterial compounds. The oxidative burst may derive in part from the increased activity or production of peroxidase or from xanthine oxidase which is constitutive; gene[s] for the latter are under study. Similarly, in plants in response to incompatible bacterial pathogens, there is rapid generation of peroxide associated with plant cell walls, as revealed by cerium chloride and transmission EM; other localised increased were in peroxidase, PAL and its mRNA [revealed by in situ hybridisation], flavonoids and unknow... Mostrar Tudo |
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Categoria do assunto: |
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LEADER 02220naa a2200157 a 4500
001 1651923
005 2004-04-16
008 1998 bl uuuu u00u1 u #d
100 1 $aGOMEZ-VASQUEZ, R.
245 $aBiochemical components of disease resistance of cassava.
260 $c1998
520 $aResistant genotypes offer the only durable, practicable means of controlling Xanthomonas bacterial bligth, but the nature of defences of cassava to this and to other diseases are virtually unknown. Suspension cultured cells in vitro show a series of resistance related responses to a range of microbial elicitors such as glucans from yeast and Colletotrichum, and to certain endogenous elicitors such as oligogalacturonides, jasmonic acid and glutathione. Surprisingly, pure LPS was ineffective but crude commercial EPS [xanthan] had effect. Auxin levels had a profound influence on intensity of cellular responses. This facile system has revealed a rapid [from 3 mins] and intensive, extracellular oxidative burst [as MO2] which can function as a first fine of defence by creating toxic Conditions, cross-linking cell wall components and as a diffusible signal. Subsequently, defence-related genes such as PAL are induced which may contribute to formation of flavonoids and antibacterial compounds. The oxidative burst may derive in part from the increased activity or production of peroxidase or from xanthine oxidase which is constitutive; gene[s] for the latter are under study. Similarly, in plants in response to incompatible bacterial pathogens, there is rapid generation of peroxide associated with plant cell walls, as revealed by cerium chloride and transmission EM; other localised increased were in peroxidase, PAL and its mRNA [revealed by in situ hybridisation], flavonoids and unknown antibacterial compounds. Catalase was down-regulated which may serve to maintain high levels of peroxide. Latex is readily released on cell damage and contains constitutuve Iysozyme but it has relatively little effect on X campestris pv. manihotis [syn. Xanonopodis].
700 1 $aDAY, R. C.
700 1 $aBEECHING, J. R.
700 1 $aCOOPER, R. M.
773 $tRevista Brasileira de Mandioca, Salvador$gv. 17, p. 40, nov., 1998., Suplemento.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
14/10/2011 |
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Data da última atualização: |
28/02/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, F. C. da; MURAOKA, T.; CASTRO, P. R. de C. e; FREIRE, F. J.; TAVARES, S. |
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Afiliação: |
FABIO CESAR DA SILVA, CNPTIA, FATEC; TAKASHI MURAOKA, CENA/USP; PAULO ROBERTO DE CAMARGO E CASTRO, ESALQ/USP; FERNANDO JOSÉ FREIRE, UFRPE; SILVIO TAVARES, APTA. |
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Título: |
Avaliação da adubação nitrogenada e potássica em soqueiras de cana-de-açúcar sem queima. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. |
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Páginas: |
p. 1-4. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
Avaliou-se o desempenho, em produtividade, pela aplicação do nitrogênio e do potássio em agrossistema canavieiro sem queima, analisando os reflexos de suas combinações, na produção de biomassa, na absorção de nutrientes pela planta, as perdas no sistema e os impactos no ambiente. Nos experimentos combinaram-se a adubação nitrogenada e potássica em 16 tratamentos, nas doses de 0, 50, 100 e 150 kg/ha, para fins de obter a maior produtividade econômica desejada, com menores impactos ambientais e adequação à legislação vigente. A adubação nitrogenada recomendada para cana sem queima foi de 50 a 100 kg de N por hectare, dependendo da adição de fertilizante K - potássico, o qual é recomendado 100 kg de K por hectare para satisfazer a necessidade da planta. |
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Palavras-Chave: |
Adubação nitrogenada; Adubação potássica; Energia renovável; Soqueiras de cana-de-açúcar. |
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Thesagro: |
Gramínea; Nitrogênio; Produção Vegetal. |
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Thesaurus NAL: |
Nitrogen; Renewable energy sources; Sugarcane. |
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Categoria do assunto: |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/43372/1/1238-1.pdf
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Marc: |
LEADER 01792nam a2200289 a 4500
001 1903122
005 2023-02-28
008 2011 bl uuuu u00u1 u #d
100 1 $aSILVA, F. C. da
245 $aAvaliação da adubação nitrogenada e potássica em soqueiras de cana-de-açúcar sem queima.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG$c2011
300 $ap. 1-4.$c1 CD-ROM.
520 $aAvaliou-se o desempenho, em produtividade, pela aplicação do nitrogênio e do potássio em agrossistema canavieiro sem queima, analisando os reflexos de suas combinações, na produção de biomassa, na absorção de nutrientes pela planta, as perdas no sistema e os impactos no ambiente. Nos experimentos combinaram-se a adubação nitrogenada e potássica em 16 tratamentos, nas doses de 0, 50, 100 e 150 kg/ha, para fins de obter a maior produtividade econômica desejada, com menores impactos ambientais e adequação à legislação vigente. A adubação nitrogenada recomendada para cana sem queima foi de 50 a 100 kg de N por hectare, dependendo da adição de fertilizante K - potássico, o qual é recomendado 100 kg de K por hectare para satisfazer a necessidade da planta.
650 $aNitrogen
650 $aRenewable energy sources
650 $aSugarcane
650 $aGramínea
650 $aNitrogênio
650 $aProdução Vegetal
653 $aAdubação nitrogenada
653 $aAdubação potássica
653 $aEnergia renovável
653 $aSoqueiras de cana-de-açúcar
700 1 $aMURAOKA, T.
700 1 $aCASTRO, P. R. de C. e
700 1 $aFREIRE, F. J.
700 1 $aTAVARES, S.
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