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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
04/04/2019 |
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Data da última atualização: |
06/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, I. C. dos; ALMEIDA, A. F. de; PIROVANI, C. P.; COSTA. M. G. C.; CONCEIÇÃO, A. S. da; SOARES FILHO, W. dos S.; COELHO FILHO, M. A.; GESTEIRA, A. da S. |
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Afiliação: |
IVANILDES CONCEIÇÃO DOS SANTOS, UESC; ALEX-ALAN FURTADO DE ALMEIDA, UESC; CARLOS PRIMINHO PIROVANI, UESC; MARCIO GILBERTO CARDOSO COSTA, UESC; ALESSANDRO SANTOS DA CONCEIÇÃO, UESC; WALTER DOS SANTOS SOARES FILHO, CNPMF; MAURICIO ANTONIO COELHO FILHO, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF. |
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Título: |
Physiological, biochemical and molecular responses to drought conditions in field-grown grafted and ungrafted citrus plants. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Environmental and Experimental Botany, v.62, p. 406/420, 2019. |
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Idioma: |
Inglês |
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Conteúdo: |
The physiological, biochemical and molecular alterations developed by plants under soil water restriction, especially rootstock, is important to elucidate the mechanisms associated to drought tolerance. In order to verify the influence of rootstock and grafting on drought tolerance of citrus plants, we examined water status, photosynthesis, oxidative stress and gene expression in grafted and ungrafted citrus plants subjected to different soil water regimes (well-watered, moderate and severe drought and rehydrated) under field conditions. Analysis were performed in roots and leaves of six plant combinations: ungrafted ?Rangpur Santa Cruz? lime (RL) and ?Sunki Maravilha? mandarin (SM), RL and SM grafted onto themselves (RL/RL and SM/SM) and ?Valencia? sweet orange (VO) grafted onto RL or SM (VO/RL and VO/SM). Drought stress reduced chloroplastid pigment contents and limited the photosynthetic rate, mainly in RL/RL plants. In contrast, the lowest leaf osmotic potential, the best osmotic adjustment and the greater phenotypic plasticity were observed in SM, SM/SMand VO/SM plants. Phenotypic plasticity and the main components of multivariate analysis showed that the physiological variables, such as Fv/F0, F0/Fm and Fv/Fm, were more responsive to soil water deficit. An increase in the superoxide dismutase (SOD) activity and transcript abundance of mitochondrial SOD [Mn-Fe], especially in the scion onto RL, and chloroplastidic SOD [Cu -Zn], inthe scion onto SM, was also observed under water deficit. Besides, an induction of transcription of genes coding for catalase (CAT X2) and ascorbate peroxidase (APX) was also observed, respectively, in leaves and roots of plants subjected to water deficit. However, such transcription increment did not affect the activity of these enzymes, especially in RL/RL plants. RL plants were more effective in soil water extraction than SM plants, evidenced mainly by the maintenance of leaf gas exchange and increase in the leaf relative water content after rehydration. The grafted plants showed alterations in their responses to the stress factor, expressed by a reduction of photosynthetic rates, changes in pigment contents, activity of antioxidant enzymes and expression of genes associated to the antioxidant metabolism, mainly in RL/RL plants. Plants with ?Valencia? scion, regardless of the rootstock studied, showed similar physiological, biochemical and molecular responses when exposed to soil water deficit. Multivariate analysis showed that Fv/F0, F0/Fm and Fv/Fm were the most important physiological variables for discriminating citrus plants subjected to control and soil water deficit conditions. MenosThe physiological, biochemical and molecular alterations developed by plants under soil water restriction, especially rootstock, is important to elucidate the mechanisms associated to drought tolerance. In order to verify the influence of rootstock and grafting on drought tolerance of citrus plants, we examined water status, photosynthesis, oxidative stress and gene expression in grafted and ungrafted citrus plants subjected to different soil water regimes (well-watered, moderate and severe drought and rehydrated) under field conditions. Analysis were performed in roots and leaves of six plant combinations: ungrafted ?Rangpur Santa Cruz? lime (RL) and ?Sunki Maravilha? mandarin (SM), RL and SM grafted onto themselves (RL/RL and SM/SM) and ?Valencia? sweet orange (VO) grafted onto RL or SM (VO/RL and VO/SM). Drought stress reduced chloroplastid pigment contents and limited the photosynthetic rate, mainly in RL/RL plants. In contrast, the lowest leaf osmotic potential, the best osmotic adjustment and the greater phenotypic plasticity were observed in SM, SM/SMand VO/SM plants. Phenotypic plasticity and the main components of multivariate analysis showed that the physiological variables, such as Fv/F0, F0/Fm and Fv/Fm, were more responsive to soil water deficit. An increase in the superoxide dismutase (SOD) activity and transcript abundance of mitochondrial SOD [Mn-Fe], especially in the scion onto RL, and chloroplastidic SOD [Cu -Zn], inthe scion onto SM, was also observed und... Mostrar Tudo |
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Thesagro: |
Fruta Cítrica. |
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Thesaurus Nal: |
Citrus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03403naa a2200229 a 4500
001 2107938
005 2019-12-06
008 2019 bl uuuu u00u1 u #d
100 1 $aSANTOS, I. C. dos
245 $aPhysiological, biochemical and molecular responses to drought conditions in field-grown grafted and ungrafted citrus plants.$h[electronic resource]
260 $c2019
520 $aThe physiological, biochemical and molecular alterations developed by plants under soil water restriction, especially rootstock, is important to elucidate the mechanisms associated to drought tolerance. In order to verify the influence of rootstock and grafting on drought tolerance of citrus plants, we examined water status, photosynthesis, oxidative stress and gene expression in grafted and ungrafted citrus plants subjected to different soil water regimes (well-watered, moderate and severe drought and rehydrated) under field conditions. Analysis were performed in roots and leaves of six plant combinations: ungrafted ?Rangpur Santa Cruz? lime (RL) and ?Sunki Maravilha? mandarin (SM), RL and SM grafted onto themselves (RL/RL and SM/SM) and ?Valencia? sweet orange (VO) grafted onto RL or SM (VO/RL and VO/SM). Drought stress reduced chloroplastid pigment contents and limited the photosynthetic rate, mainly in RL/RL plants. In contrast, the lowest leaf osmotic potential, the best osmotic adjustment and the greater phenotypic plasticity were observed in SM, SM/SMand VO/SM plants. Phenotypic plasticity and the main components of multivariate analysis showed that the physiological variables, such as Fv/F0, F0/Fm and Fv/Fm, were more responsive to soil water deficit. An increase in the superoxide dismutase (SOD) activity and transcript abundance of mitochondrial SOD [Mn-Fe], especially in the scion onto RL, and chloroplastidic SOD [Cu -Zn], inthe scion onto SM, was also observed under water deficit. Besides, an induction of transcription of genes coding for catalase (CAT X2) and ascorbate peroxidase (APX) was also observed, respectively, in leaves and roots of plants subjected to water deficit. However, such transcription increment did not affect the activity of these enzymes, especially in RL/RL plants. RL plants were more effective in soil water extraction than SM plants, evidenced mainly by the maintenance of leaf gas exchange and increase in the leaf relative water content after rehydration. The grafted plants showed alterations in their responses to the stress factor, expressed by a reduction of photosynthetic rates, changes in pigment contents, activity of antioxidant enzymes and expression of genes associated to the antioxidant metabolism, mainly in RL/RL plants. Plants with ?Valencia? scion, regardless of the rootstock studied, showed similar physiological, biochemical and molecular responses when exposed to soil water deficit. Multivariate analysis showed that Fv/F0, F0/Fm and Fv/Fm were the most important physiological variables for discriminating citrus plants subjected to control and soil water deficit conditions.
650 $aCitrus
650 $aFruta Cítrica
700 1 $aALMEIDA, A. F. de
700 1 $aPIROVANI, C. P.
700 1 $aCOSTA. M. G. C.
700 1 $aCONCEIÇÃO, A. S. da
700 1 $aSOARES FILHO, W. dos S.
700 1 $aCOELHO FILHO, M. A.
700 1 $aGESTEIRA, A. da S.
773 $tEnvironmental and Experimental Botany$gv.62, p. 406/420, 2019.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Biblioteca |
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| Registros recuperados : 24 | |
| 11. |  | SILVA, P. S. L. e; RODRIGUES, V. L. P.; MEDEIROS, J. F. de; AQUINO, B. F. de; SILVA, J. da. Rendimento e qualidade de frutos do meloeiro em resposta à aplicação de doses de nitrogênio e potássio. Revista Caatinga, Mossoró, v.20, n. 2, p. 43-49, abr/jun. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 12. | | SILVA, N. L. da; TONUCCI, R. G.; SILVA, P. S. L. e; GUEDES, F. L.; POMPEU, R. C. F. F. Sistemas integrados no bioma Caatinga. In: SOUZA, H. A. de; LEITE, L. F. C.; MEDEIROS, J. C. (Ed.). Solos sustentáveis para a agricultura no Nordeste. Brasília, DF: Embrapa, 2021. Parte 2, Cap. 4, p. 439-452.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 15. | | CARVALHO, J. dos S.; SILVA, L. R. A. da; COSTA, M. de M.; SILVA, P. S. L. e; FREIRE FILHO, F. R. Caracterização dos grãos de cultivares locais de feijão-caupi coletados no Estado do Rio Grande do Norte. In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS; WORKSHOP EM BIOPROSPECÇÃO E CONSERVAÇÃO DE PLANTAS NATIVAS DO SEMI-ÁRIDO, 3.; WORKSHOP INTERNACIONAL SOBRE BIOENERGIA E MEIO AMBIENTE, 2010, Salvador. Bancos de germoplasma: descobrir a riqueza, garantir o futuro: anais. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 16. | | SILVA, P. S. L. e; RODRIGUES, V. L. P. UFERSA; AQUINO, B. F. de; MEDEIROS, J. F. de; SILVA, J. da. Resposta do meloeiro à aplicação de doses de nitrogênio e fósforo. Revista Caatinga, Mossoró, v.20, n. 1, p. 64-70, jan/mar. 2007.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 17. | | SILVA, J. da; PESSOA, M. O. A.; SILVA, P. S. L. e; ARRAIS, Í. G.; SILVA, J. R. da; TORRES, J. F. Rendimentos de cultivares de macaxeira fertirrigada no tabuleiro de russas, Ceará. In: CONGRESSO BRASILEIRO DE MANDIOCA, 16.; CONGRESSO LATINO-AMERICANO E CARIBENHO DE MANDIOCA, 2015, Foz do Iguaçu. Integração: segurança alimentar e geração de renda: anais. Foz do Iguaçu: SBM, 2015. 1 CD-ROM. 4 P.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 18. | | SILVA, P. S. L. e; SILVA, K. M. B. e; SILVA, N. L. e; DINIZ FILHO, E. T.; SANTOS, M. X. dos. Rendimentos de grãos verdes e secos de cultivares de milho. I. Período 1985-90. Revista Ceres, Viçosa, v. 45, n. 257, p. 89-115, 1998.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| 19. | | SILVA, P. S. L. e; SILVA, P. I. B. e; OLIVEIRA, O. F. de; SOUSA, R. P. de; FREIRE FILHO, F. R. Sowing season of corn with cowpea and corn intercropping in the weed control. I. Green ears yield. In: CONGRESSO NACIONAL DE FEIJÃO-CAUPI, 1.; REUNIÃO NACIONAL DE FEIJÃO-CAUPI, 6., 2006, Teresina. Tecnologias para o agronegócio: anais. Teresina: Embrapa Meio-Norte, 2006. 1 CD-ROM. (Embrapa Meio-Norte. Documentos, 121).| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Meio-Norte. |
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| 20. | | SOUSA, R. P. DE; SILVA, P. S. L. E; ASSIS, J. P. DE; SILVA, J. da; OLIVEIRA, V. R. DE; OLIVEIRA, A. M. DE P. Tamanho ótimo de parcela para avaliação do rendimento de grãos do girassol. Revista Brasileira de Engenharia Agrícola e Ambiental, v.19, n.1, p.21-26, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 24 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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