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| Registros recuperados : 45 | |
| 5. |  | ZANELLA, L.; DEGENHARDT-GOLDBACH, J.; GERHARDT, I. R.; BESPALHOK FILHO, J. C. RNA interference supression of DOF transcription factor from Populus tremula x Populus alba. Pesquisa Florestal Brasileira, Colombo, v. 39, (nesp), e201902043, 2019. p. 322. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | ZANELLA, L.; DEGENHARDT-GOLDBACH, J.; GERHARDT, I. R.; BESPALHOK FILHO, J. C. RNA interference supression of DOF transcription factor from Populus tremula x Populus alba. Pesquisa Florestal Brasileira, v. 39, e201902043, p. 322, 2019. Na publicação: Isabel Gerhardt. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 9. | | GAVAZZA, M. I. A.; BASSOI, M. C.; CARVALHO, T. C. de; BESPALHOK FILHO, J. C.; PANOBIANCO, M. Methods for assessment of pre-harvest sprouting in wheat cultivars. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 47, n. 7, p. 928-933, jul. 2012.| Biblioteca(s): Embrapa Soja; Embrapa Unidades Centrais. |
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| 10. | | GUERRA, E. P.; OLIVEIRA, R. A. de; DAROS, E.; ZAMBON, J. L. C.; IDO, O. T.; BESPALHOK FILHO, J. C. Stability and adaptability of early maturing sugarcane clones by AMMI analysis. Crop Breeding and Applied Biotechnology, Londrina, v. 9, n. 3, p. 260-267, Sept. 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
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| 11. | | OLIVEIRA-CAUDURO, Y. de; ADAMUCHIO, L. G.; DEGENHART-GOLDBACH, J.; BESPALHOK FILHO, J. C.; DIBAX, R.; QUOIRIN, M. Organogênese indireta a partir de explantes foliares e multiplicação in vitro de brotações de Eucalyptus benthamii X Eucalyptus dunnii. Ciência Florestal, Santa Maria, v. 24, n. 2, p. 347-355, abr./jun. 2014.| Biblioteca(s): Embrapa Florestas. |
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| 14. | | BESPALHOK FILHO, J. C.; KOBAYASHI, A. K.; PEREIRA, L. F. P.; HISSANO, Z.; VIEIRA, L. G. E. In vitro adventitious shoot regeneration from sweet orange using thin epicotyl sections. Crop Breeding and Applied Biotechnology, Londrina, v.1, n.1, p.27-34, 2001.| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Mandioca e Fruticultura. |
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| 15. | | SILVA, S. D. dos A. e; VERISSIMO, M. A. A.; EICHOLZ, E. D.; DAROS, E.; BESPALHOK FILHO, J. C.; OLIVEIRA, R. A. de. Avaliação de genótipos de cana-de-açúcar no rio grande do sul, ciclo de cana planta, safra 2008/2009. In: SIMPÓSIO ESTADUAL DE AGROENERGIA, 3.; REUNIÃO TÉCNICA ANUAL DE AGROENERGIA, 3.; REUNIÃO TÉCNICA DA MANDIOCA, 10.; REUNIÃO TÉCNICA DA BATATA-DOCE, 2., Pelotas, 2010. Anais... Pelotas: Embrapa Clima Temperado, 2010. Organizado por Sérgio Delmar dos Anjos e Silva, Ivan Rodrigues de Almeida e Ana Cláudia Barneche de Oliveira. 1 CD-ROM.| Biblioteca(s): Embrapa Clima Temperado. |
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| 16. | | SANTOS, E. L. dos; BESPALHOK FILHO, J. C.; HANSEL, F. A.; SOUSA, J. A. T.; AUER, C. G.; STEINER, N.; DEGENHARDT, J. Azacytidine affects gene expression and metabolic profile of Pinus elliottii x Pinus caribaea var. hondurensis embryogenic cell lines. Plant Cell, Tissue and Organ Culture, v. 155, p. 637-651, 2023.| Biblioteca(s): Embrapa Florestas. |
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| 17. | | CARVALHO, K. de; BESPALHOK FILHO, J. C.; SANTOS, T. B. dos; SOUZA, S. G. H. de; VIEIRA, L. G. E.; PEREIRA, L. F. P.; DOMINGUES, D. S. Nitrogen starvation, salt and heat stress in coffee (coffea arabica L.): identification and validation of new genes for qPCR normalization. Molecular Biotechnology, v. 53, n. 3, p. 315-325, 2013.| Biblioteca(s): Embrapa Café. |
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| 18. | | VERISSIMO, M. A. A.; AZEREDO, A. A. C. de; SILVA, S. D. dos A. e; BRASILEIRO, B. P.; BESPALHOK FILHO, J. C.; DAROS, E.; OLIVEIRA, R. A. de. Selection of sugarcane families and clones under cold stress. Ciência Rural, Santa Maria, v. 50, n. 1, e20181043, 2020. 12 p.| Biblioteca(s): Embrapa Clima Temperado. |
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| 19. | | OLIVEIRA, R. A. de; DAROS, E.; RESENDE, M. D. V. de; BESPALHOK FILHO, J. C.; José Luis Camargo Zambon; RUARO, L. Early selection in sugarcane family trials via BLUP and BLUPIS procedures. Acta Scientiarum: Agronomy, Maringá, v. 35, n. 4, p. 427-434, oct./dec. 2013.| Biblioteca(s): Embrapa Florestas. |
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| 20. | | CAMPOS, M. K. F. de; CARVALHO, K. de; SOUZA, F. S. de; MARUR, C. J.; PEREIRA, L. F. P.; BESPALHOK FILHO, J. C.; VIEIRA, L. G. E. Drought tolerance and antioxidant enzymatic activity in transgenic 'Swingle' citrumelo plants over-accumulating proline. Environmental and Experimental Botany, v.72, n. 2, p. 242-250, 2011.| Biblioteca(s): Embrapa Café. |
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| Registros recuperados : 45 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
05/10/2011 |
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Data da última atualização: |
10/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CAMPOS, M. K. F. de; CARVALHO, K. de; SOUZA, F. S. de; MARUR, C. J.; PEREIRA, L. F. P.; BESPALHOK FILHO, J. C.; VIEIRA, L. G. E. |
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Afiliação: |
INSTITUTO AGRONÔMICO DO PARANÁ; INSTITUTO AGRONÔMICO DO PARANÁ; INSTITUTO AGRONÔMICO DO PARANÁ; INSTITUTO AGRONÔMICO DO PARANÁ; LUIZ FILIPE PROTASIO PEREIRA, SAPC; UNIVERSIDADE FEDERAL DO PARANÁ; UNIVERSIDADE FEDERAL DO PARANÁ. |
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Título: |
Drought tolerance and antioxidant enzymatic activity in transgenic 'Swingle' citrumelo plants over-accumulating proline. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Environmental and Experimental Botany, v.72, n. 2, p. 242-250, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
In this study we investigated the effects of the high endogenous proline level on water relations, gas exchange and antioxidant enzymatic activity in leaves of transgenic 'Swingle' citrumelo rootstocks transformed with the P5CSF129A gene coding for the key-enzyme for proline synthesis, under water deficit. Leaf total water, osmotic and pressure potentials, stomatal conductance, photosynthetic rates and xylem sapflowwere evaluated in non-transformed control and transgenic plants during water deficit treatment. Malondialdehyde (MDA) content, catalase (CAT; EC 1.11.1.6), superoxide dismutase (SOD; EC 1.15.1.1) and ascorbate peroxidase (APX; EC 1.11.1.11) activities were quantified in leaves collected based on their total water potential, representing the following conditions: irrigated (w = -1.3 MPa), moderate stress (w = -2.3 to - 2.5 MPa), severe stress (w = -3.8 to - 3.9 MPa) and recovery (24 h after re-irrigation: w = -1.3 to - 1.9 MPa). Osmotic adjustment was observed in transgenic plants until 11 days after withholding water, while pressure potential in non-transformed controls was close to zero after nine days of water deprivation. This superior maintenance of turgor pressure in leaves of transgenic plants led to higher stomatal conductance, photosynthetic and transpiration rates when compared to non-transgenic plants. Drought caused a significant decrease in APX and SOD activities in control plants, followed by an increase after re-watering. On the other hand, CAT was more active in control than in transgenic plants under irrigated condition and both stress levels. Our results suggest that transgenic plants were able to cope with water deficit better than non-transformed controls since the high endogenous proline level acted not only by mediating osmotic adjustment, but also by contributing to gas exchange parameters and ameliorating deleterious effects of drought-induced oxidative stress. MenosIn this study we investigated the effects of the high endogenous proline level on water relations, gas exchange and antioxidant enzymatic activity in leaves of transgenic 'Swingle' citrumelo rootstocks transformed with the P5CSF129A gene coding for the key-enzyme for proline synthesis, under water deficit. Leaf total water, osmotic and pressure potentials, stomatal conductance, photosynthetic rates and xylem sapflowwere evaluated in non-transformed control and transgenic plants during water deficit treatment. Malondialdehyde (MDA) content, catalase (CAT; EC 1.11.1.6), superoxide dismutase (SOD; EC 1.15.1.1) and ascorbate peroxidase (APX; EC 1.11.1.11) activities were quantified in leaves collected based on their total water potential, representing the following conditions: irrigated (w = -1.3 MPa), moderate stress (w = -2.3 to - 2.5 MPa), severe stress (w = -3.8 to - 3.9 MPa) and recovery (24 h after re-irrigation: w = -1.3 to - 1.9 MPa). Osmotic adjustment was observed in transgenic plants until 11 days after withholding water, while pressure potential in non-transformed controls was close to zero after nine days of water deprivation. This superior maintenance of turgor pressure in leaves of transgenic plants led to higher stomatal conductance, photosynthetic and transpiration rates when compared to non-transgenic plants. Drought caused a significant decrease in APX and SOD activities in control plants, followed by an increase after re-watering. On the other hand, CAT was m... Mostrar Tudo |
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Palavras-Chave: |
Citrus rootstock; Osmotic adjustment. |
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Thesaurus NAL: |
Drought tolerance; Oxidative stress; Proline. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42905/1/Drought-tolerance-and-antioxidant.pdf
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Marc: |
LEADER 02726naa a2200253 a 4500
001 1902435
005 2024-01-10
008 2011 bl uuuu u00u1 u #d
100 1 $aCAMPOS, M. K. F. de
245 $aDrought tolerance and antioxidant enzymatic activity in transgenic 'Swingle' citrumelo plants over-accumulating proline.$h[electronic resource]
260 $c2011
520 $aIn this study we investigated the effects of the high endogenous proline level on water relations, gas exchange and antioxidant enzymatic activity in leaves of transgenic 'Swingle' citrumelo rootstocks transformed with the P5CSF129A gene coding for the key-enzyme for proline synthesis, under water deficit. Leaf total water, osmotic and pressure potentials, stomatal conductance, photosynthetic rates and xylem sapflowwere evaluated in non-transformed control and transgenic plants during water deficit treatment. Malondialdehyde (MDA) content, catalase (CAT; EC 1.11.1.6), superoxide dismutase (SOD; EC 1.15.1.1) and ascorbate peroxidase (APX; EC 1.11.1.11) activities were quantified in leaves collected based on their total water potential, representing the following conditions: irrigated (w = -1.3 MPa), moderate stress (w = -2.3 to - 2.5 MPa), severe stress (w = -3.8 to - 3.9 MPa) and recovery (24 h after re-irrigation: w = -1.3 to - 1.9 MPa). Osmotic adjustment was observed in transgenic plants until 11 days after withholding water, while pressure potential in non-transformed controls was close to zero after nine days of water deprivation. This superior maintenance of turgor pressure in leaves of transgenic plants led to higher stomatal conductance, photosynthetic and transpiration rates when compared to non-transgenic plants. Drought caused a significant decrease in APX and SOD activities in control plants, followed by an increase after re-watering. On the other hand, CAT was more active in control than in transgenic plants under irrigated condition and both stress levels. Our results suggest that transgenic plants were able to cope with water deficit better than non-transformed controls since the high endogenous proline level acted not only by mediating osmotic adjustment, but also by contributing to gas exchange parameters and ameliorating deleterious effects of drought-induced oxidative stress.
650 $aDrought tolerance
650 $aOxidative stress
650 $aProline
653 $aCitrus rootstock
653 $aOsmotic adjustment
700 1 $aCARVALHO, K. de
700 1 $aSOUZA, F. S. de
700 1 $aMARUR, C. J.
700 1 $aPEREIRA, L. F. P.
700 1 $aBESPALHOK FILHO, J. C.
700 1 $aVIEIRA, L. G. E.
773 $tEnvironmental and Experimental Botany$gv.72, n. 2, p. 242-250, 2011.
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