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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
16/12/2015 |
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Data da última atualização: |
16/12/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BUSS, D. S.; DIAS, G. B.; SANTOS, M. P.; VENTURA, J. A.; FERNANDES, P. M. B. |
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Afiliação: |
David Shaun Buss, UFES; Germana Bueno Dias, UFES; Mirella Pupo Santos, UFES; Jose Aires Ventura, Incaper; Patricia Machado Bueno Fernandes, UFES. |
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Título: |
Oxidative stress defence response of Carica papaya challenged by nitric oxide, Papaya meleira virus and Saccharomyces cerevisiae |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
The Open Nitric Oxide Journal, v. 3, p. 55-64, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Seedlings of papaya (Carica papaya), cultivar Golden, were exposed to a nitric oxide donor, sodium nitroprusside (SNP), Papaya meleira virus (PMeV) and yeast (Saccharomyces cerevisiae, as a model fungal elicitor). The aim was to investigate the response of C. papaya to infection and the role of nitric oxide in this process. SNP alone led to a short lived (6 h) burst of peroxidase activity and a relatively low level thereafter, although higher than the control, whilst the virus PMeV caused a sustained increase for at least 30 days. In contrast, both SNP and PMeV treatments increased superoxide dismutase activity for at least 30 days. In general, concomitant addition of PMeV and SNP produced the highest increases in peroxidase and superoxide dismutase activity over the 30 day time course. Levels of phenolics were elevated after addition of SNP and histochemistry confirmed increased peroxidase and superoxide dismutase activity, especially around the phloem cell walls, suggestive of lignification. Carbohydrate content was also elevated after SNP treatment, in particular saccharose. Treatment with yeast produced increased peroxidase activity and phenolic and carbohydrate content in the plant tissues. These results demonstrate some of the defences elicited in Carica papaya in response to infection, and the role of nitric oxide in this process. The apparent systemic acquired resistance displayed suggests that artificial initiation of this process might be a useful future technique against PMeV in the horticultural industry. MenosSeedlings of papaya (Carica papaya), cultivar Golden, were exposed to a nitric oxide donor, sodium nitroprusside (SNP), Papaya meleira virus (PMeV) and yeast (Saccharomyces cerevisiae, as a model fungal elicitor). The aim was to investigate the response of C. papaya to infection and the role of nitric oxide in this process. SNP alone led to a short lived (6 h) burst of peroxidase activity and a relatively low level thereafter, although higher than the control, whilst the virus PMeV caused a sustained increase for at least 30 days. In contrast, both SNP and PMeV treatments increased superoxide dismutase activity for at least 30 days. In general, concomitant addition of PMeV and SNP produced the highest increases in peroxidase and superoxide dismutase activity over the 30 day time course. Levels of phenolics were elevated after addition of SNP and histochemistry confirmed increased peroxidase and superoxide dismutase activity, especially around the phloem cell walls, suggestive of lignification. Carbohydrate content was also elevated after SNP treatment, in particular saccharose. Treatment with yeast produced increased peroxidase activity and phenolic and carbohydrate content in the plant tissues. These results demonstrate some of the defences elicited in Carica papaya in response to infection, and the role of nitric oxide in this process. The apparent systemic acquired resistance displayed suggests that artificial initiation of this process might be a useful future technique ... Mostrar Tudo |
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Palavras-Chave: |
Mamão. |
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Thesaurus NAL: |
Antioxidant; Carbohydrate; Carica papaya; Nitric oxide; Papaya meleira virus; Peroxidase; Superoxide dismutase. |
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Categoria do assunto: |
-- |
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URL: |
http://biblioteca.incaper.es.gov.br/digital/bitstream/item/1068/1/BRT-oxidativestressdefenceresponceofcaricapapaya-jventura.pdf
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Marc: |
LEADER 02332naa a2200265 a 4500
001 1009382
005 2015-12-16
008 2011 bl uuuu u00u1 u #d
100 1 $aBUSS, D. S.
245 $aOxidative stress defence response of Carica papaya challenged by nitric oxide, Papaya meleira virus and Saccharomyces cerevisiae$h[electronic resource]
260 $c2011
520 $aSeedlings of papaya (Carica papaya), cultivar Golden, were exposed to a nitric oxide donor, sodium nitroprusside (SNP), Papaya meleira virus (PMeV) and yeast (Saccharomyces cerevisiae, as a model fungal elicitor). The aim was to investigate the response of C. papaya to infection and the role of nitric oxide in this process. SNP alone led to a short lived (6 h) burst of peroxidase activity and a relatively low level thereafter, although higher than the control, whilst the virus PMeV caused a sustained increase for at least 30 days. In contrast, both SNP and PMeV treatments increased superoxide dismutase activity for at least 30 days. In general, concomitant addition of PMeV and SNP produced the highest increases in peroxidase and superoxide dismutase activity over the 30 day time course. Levels of phenolics were elevated after addition of SNP and histochemistry confirmed increased peroxidase and superoxide dismutase activity, especially around the phloem cell walls, suggestive of lignification. Carbohydrate content was also elevated after SNP treatment, in particular saccharose. Treatment with yeast produced increased peroxidase activity and phenolic and carbohydrate content in the plant tissues. These results demonstrate some of the defences elicited in Carica papaya in response to infection, and the role of nitric oxide in this process. The apparent systemic acquired resistance displayed suggests that artificial initiation of this process might be a useful future technique against PMeV in the horticultural industry.
650 $aAntioxidant
650 $aCarbohydrate
650 $aCarica papaya
650 $aNitric oxide
650 $aPapaya meleira virus
650 $aPeroxidase
650 $aSuperoxide dismutase
653 $aMamão
700 1 $aDIAS, G. B.
700 1 $aSANTOS, M. P.
700 1 $aVENTURA, J. A.
700 1 $aFERNANDES, P. M. B.
773 $tThe Open Nitric Oxide Journal$gv. 3, p. 55-64, 2011.
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Registro original: |
Biblioteca Rui Tendinha (BRT) |
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 | Acesso ao texto completo restrito à biblioteca da Biblioteca Rui Tendinha. Para informações adicionais entre em contato com biblioteca@incaper.es.gov.br. |
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Registro Completo |
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Biblioteca(s): |
Biblioteca Rui Tendinha. |
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Data corrente: |
14/07/2015 |
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Data da última atualização: |
23/10/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
PADOVAN, M. da P.; CORTEZ, V. J.; NAVARRETE, L. F.; NAVARRETE, E. D.; DEFFNER, A. C.; CENTENO, L. G.; MUNGUÍA, R.; BARRIOS, M.; VÍLCHEZ-MENDOZA, J. S.; VEGA-JARQUÍN, C.; COSTA, A. N. da.; BROOK, R. M.; RAPIDEL, B. |
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Afiliação: |
Maria da Penha Padovan, Incaper; CORTEZ, V. J.; Aureliano Nogueira da Costa, Incaper. |
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Título: |
Root distribution and water use in coffee shaded with Tabebuia rosea Bertol. and Simarouba glauca DC. compared to full sun coffee in sub-optimal environmental conditions. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 89, p. 743-749, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Root niche differentiation for optimal exploitation of resources was found in an arabica coffee agroforestry system in Nicaragua. Rooting behavior was compared in both unshaded (FS) and shaded (AFS) coffee combined with two previously untested tropical timber species (deciduous Tabebuia rosea Bertol. and evergreen Simarouba glauca DC.). The predominant andisol possesses a compacted soil layer (talpetate). The study was conducted in sub-optimal environmental conditions for coffee cultivation (455 m.a.s.l., annual mean 27 °C, 1300 mm rainfall/year, 6 months dry season) in Nicaragua. Twelve and five trenches 200 cm deep were dug in AFS and FS respectively. Roots per unit area were counted on two perpendicular soil faces. Volumetric water was measured continuously over 2 years by using 45 reflectometers in different soil layers. The talpetate varied greatly in depth, thickness and physical structure. Coffee fine roots were more abundant than tree roots and were concentrated in the shallower strata (0?80 cm) whilst tree roots proliferated more below 100 cm. The S. glauca root system was denser below 100 cm than T. rosea root system. There was no meaningful difference in coffee root counts in FS and under T. rosea, but coffee root counts were higher near S. glauca trees. 2012 and 2014 had mild dry seasons and whole profile soil water content was similar in FS and AFS, but in the 2013 severe dry period volumetric water and water uptake were lower in AFS than in FS. This indicates that the normal advantage of greater soil exploration in AFS was cancelled presumably due to continued water uptake by deep rooting trees whereas the FS still had available water. MenosRoot niche differentiation for optimal exploitation of resources was found in an arabica coffee agroforestry system in Nicaragua. Rooting behavior was compared in both unshaded (FS) and shaded (AFS) coffee combined with two previously untested tropical timber species (deciduous Tabebuia rosea Bertol. and evergreen Simarouba glauca DC.). The predominant andisol possesses a compacted soil layer (talpetate). The study was conducted in sub-optimal environmental conditions for coffee cultivation (455 m.a.s.l., annual mean 27 °C, 1300 mm rainfall/year, 6 months dry season) in Nicaragua. Twelve and five trenches 200 cm deep were dug in AFS and FS respectively. Roots per unit area were counted on two perpendicular soil faces. Volumetric water was measured continuously over 2 years by using 45 reflectometers in different soil layers. The talpetate varied greatly in depth, thickness and physical structure. Coffee fine roots were more abundant than tree roots and were concentrated in the shallower strata (0?80 cm) whilst tree roots proliferated more below 100 cm. The S. glauca root system was denser below 100 cm than T. rosea root system. There was no meaningful difference in coffee root counts in FS and under T. rosea, but coffee root counts were higher near S. glauca trees. 2012 and 2014 had mild dry seasons and whole profile soil water content was similar in FS and AFS, but in the 2013 severe dry period volumetric water and water uptake were lower in AFS than in FS. This indicates t... Mostrar Tudo |
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Palavras-Chave: |
Agriculture; Forestry. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02577naa a2200289 a 4500
001 1006688
005 2015-10-23
008 2015 bl uuuu u00u1 u #d
100 1 $aPADOVAN, M. da P.
245 $aRoot distribution and water use in coffee shaded with Tabebuia rosea Bertol. and Simarouba glauca DC. compared to full sun coffee in sub-optimal environmental conditions.$h[electronic resource]
260 $c2015
520 $aRoot niche differentiation for optimal exploitation of resources was found in an arabica coffee agroforestry system in Nicaragua. Rooting behavior was compared in both unshaded (FS) and shaded (AFS) coffee combined with two previously untested tropical timber species (deciduous Tabebuia rosea Bertol. and evergreen Simarouba glauca DC.). The predominant andisol possesses a compacted soil layer (talpetate). The study was conducted in sub-optimal environmental conditions for coffee cultivation (455 m.a.s.l., annual mean 27 °C, 1300 mm rainfall/year, 6 months dry season) in Nicaragua. Twelve and five trenches 200 cm deep were dug in AFS and FS respectively. Roots per unit area were counted on two perpendicular soil faces. Volumetric water was measured continuously over 2 years by using 45 reflectometers in different soil layers. The talpetate varied greatly in depth, thickness and physical structure. Coffee fine roots were more abundant than tree roots and were concentrated in the shallower strata (0?80 cm) whilst tree roots proliferated more below 100 cm. The S. glauca root system was denser below 100 cm than T. rosea root system. There was no meaningful difference in coffee root counts in FS and under T. rosea, but coffee root counts were higher near S. glauca trees. 2012 and 2014 had mild dry seasons and whole profile soil water content was similar in FS and AFS, but in the 2013 severe dry period volumetric water and water uptake were lower in AFS than in FS. This indicates that the normal advantage of greater soil exploration in AFS was cancelled presumably due to continued water uptake by deep rooting trees whereas the FS still had available water.
653 $aAgriculture
653 $aForestry
700 1 $aCORTEZ, V. J.
700 1 $aNAVARRETE, L. F.
700 1 $aNAVARRETE, E. D.
700 1 $aDEFFNER, A. C.
700 1 $aCENTENO, L. G.
700 1 $aMUNGUÍA, R.
700 1 $aBARRIOS, M.
700 1 $aVÍLCHEZ-MENDOZA, J. S.
700 1 $aVEGA-JARQUÍN, C.
700 1 $aCOSTA, A. N. da.
700 1 $aBROOK, R. M.
700 1 $aRAPIDEL, B.
773 $tAgroforestry Systems$gv. 89, p. 743-749, 2015.
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