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| Registros recuperados : 23 | |
| 5. |  | NAGASHIMA, G. T.; MIGLIORANZA, E.; MARUR, C. J.; YAMAOKA, R. S.; SOUZA, F. S. de; SILVA, J. G. dos R. Efeito de diferentes sistemas de tratamento de sementes com cloreto de Mepiquat, sobre o crescimento das plantas de algodoeiro In: CONGRESSO BRASILEIRO DO ALGODÃO, 6., 2007, Uberlândia. Resumos... Uberlândia, 2007. p.1-5 1 CD-ROM| Biblioteca(s): Embrapa Algodão. |
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| 6. | | ASSIS, A. M. de; YAMAMOTO, L. Y.; SOUZA, F. S. de; BORGES, R. de S.; RUFFO, S. R. Evolução da maturação e características físico-químicas e produtivas das videiras 'BRS Carmem' e 'Isabel'. Revista Brasileira de Fruticultura, Jaboticabal, v. 33, p. 493-498, out. 2011. Número especial. Trabalho apresentado no Simpósio Internacional de Fruticultura, Sinfruit, Campinas-SP, de 17 a 21 de outubro de 2011.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 7. | | SOUZA, F. S. de; SOUZA, C. R. de; ASSIS, A. M. de; YAMAMOTO, L. Y.; SATO, A. J.; MORAIS, H.; SOUZA, R. T. de; ROBERTO, S. R. Relações hídricas e temperatura de bagas da uva 'BRS Clara' cultivada sob cobertura plástica e sombrite no Norte do Paraná. In: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 12., 2009, [Montevideo]. [Anais...] [Montevideo]: Asociación de Enólogos del Uruguay, 2009. Não paginado. 1 CD-ROM.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 8. | | NEVES, C. M N. das; SILVA, M. L. N.; CURI, N.; CARDOSO, E. L.; MACEDO, R. L. G.; FERREIRA, M. M; SOUZA, F. S. de. Atributos indicadores da qualidade do solo em sistema agrossilvopastoril no noroeste do Estado de Minas Gerais = Indicator attributes of soil quality in agri-forestry-pasture system at Northwestern of Minas Gerais State, Brasil. Scientia Forestalis, v.74, p. 45-53, jun. 2007.| Biblioteca(s): Embrapa Pantanal. |
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| 9. | | NEVES, C. M. N. das; SILVA, M. L. N.; CURI, N.; CARDOSO, E. L.; MACEDO, R. L. G.; FERREIRA, M. M.; SOUZA, F. S. de. Atributos indicadores da qualidade do solo em sistema agrossilvopastoril no noroeste do estado de Minas Gerais. Scientia Forestalis, Piracicaba, n. 74, p. 45-53, jun. 2007.| Biblioteca(s): Embrapa Florestas. |
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| 10. | | SOUZA, F. S. de; OLIVEIRA, E. J. F. de; RIBEIRO, M. de F.; SOUZA, B. de A.; COSTA, M. A. P. de C.; CARVALHO, C. A. L. de. Genetic divergence in island and continental populations of Melipona subnitida, in the Northeast of Brazil: analysis of mitochondrial DNA. In: ENCONTRO SOBRE ABELHAS, 11., 2015, Ribeirão Preto. Anais... Ribeirão Preto: USP: FCLRP, 2015. p. 301.| Biblioteca(s): Embrapa Meio-Norte. |
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| 11. | | SOUZA, F. S. de; OLIVEIRA, E. J. F. de; RIBEIRO, M. de F.; SOUZA, B. de A.; COSTA, M. A. P. de C.; CARVALHO, C. A. L. de. Genetic divergence in island and continental populations of Melipona subnitida, in the Northeast of Brazil: analysis of mitochondrial DNA. In: ENCONTRO SOBRE ABELHAS, 11., 2015, Ribeirão Preto. Anais... Ribeirão Preto: USP: FCLRP, 2015. p. 301.| Biblioteca(s): Embrapa Semiárido. |
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| 12. | | YAMAMOTO, L. Y.; ASSIS, A. M.; MORAIS, H.; SOUZA, F. S. de; SCAPIN, C. R.; TESSMANN; SOUZA, R. T. de; ROBERTO, S. R. Produção e características físico-químicas dos cachos da videira 'BRS Clara' sob cobertura plástica e sombrite em safra fora de época. Revista Brasileira de Fruticultura, Jaboticabal, v. 34, n. 1, p. 160-166, mar. 2012.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 13. | | 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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| 14. | | SOUZA, F. S. de; COSTA, R. G.; RESENDE, K. T. de; TEIXEIRA, I. A. M. de A.; CAVALCANTI FILHO, E. P.; OLIVEIRA, M. E. F.; FERREIRA, R. M. Avaliação da rrecocidade reprodutiva em caprinos Saanen e7/8 Boer + 1/8 Saanen da puberdade à maturidade sexual. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 45., 2008, Lavras. Biotecnologia e sustentabilidade: anais. Brasília, DF: SBZ; Lavras: UFLA, 2008. 1 CD-ROM.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | MELO, L. C. A.; AVANZI, J. C.; CARVALHO, R.; SOUZA, F. S. de; PEREIRA, J. L. A. R.; MENDES, A. D. R.; MACÊDO, G. B. Nutrição e produção de máteria seca de milho submetido a calagem e adubação sulfatada. Pesquisa Agropecuária Tropical, Goiânia, v. 41, n. 2, p. 193-199, abr./jun. 2011.| Biblioteca(s): Embrapa Pesca e Aquicultura. |
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| 17. | | YAMAMOTO, L. Y.; ASSIS, A. M. de; MORAIS, H.; SOUZA, F. S. de; MIOTTO, L. C. V.; SATO, A. J.; SOUZA, R. T. de; ROBERTO, S. R. Evolução da maturação da uva 'BRS Clara' sob cultivo protegido durante a safra fora de época. Bragantia, Campinas, v. 70, n. 4, p. 825-831, 2011.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 18. | | ROBERTO, S. R.; YAMAMOTO, L. Y.; ASSIS, A. M. de; SOUZA, F. S. de; MORAIS, H.; MIOTTO, L. C. V.; SOUZA, R. T. de. Evolução da maturação da uva sem semente 'BRS Clara' sob cultivo protegido. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 21., 2010, Natal. Frutas: saúde, inovação e responsabilidade: anais. Natal: Sociedade Brasileira de Fruticultura, 2010. 4 p. Resumo expandido.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 19. | | SOUZA, F. S. de; COSTA, M. A. P. de C.; OLIVEIRA, E. J. F. de; RIBEIRO, M. de F.; SOUZA, B. de A.; ARAÚJO, E. D.; IMPERATRIZ-FONSECA, V. L.; CARVALHO, C. A. L. de. Genetic variability of Melipona subnitida (Hymenoptera: Apidae) in introduced and native populations. Journal of Insect Science, v. 18, n. 5, p. 1-6, 2018.| Biblioteca(s): Embrapa Meio-Norte; Embrapa Semiárido. |
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| 20. | | ASSIS, A. M. de; SOUZA, F. S. de; YAMAMOTO, L. Y.; SATO, A. J.; COLOMBO, L. A.; MIOTTO, L. C.; SOUZA, C. R. de; MORAIS, H.; SOUZA, R. T. de; ROBERTO, S. R. Caracterização produtiva e físico-química da videira 'BRS Clara' sob cobertura plástica. In: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 12., 2009, [Montevideo]. [Anais...] [Montevideo]: Asociación de Enólogos del Uruguay, 2009. Não paginado. 1 CD-ROM.| Biblioteca(s): Embrapa Uva e Vinho. |
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| Registros recuperados : 23 | |
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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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