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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/04/2011 |
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Data da última atualização: |
29/04/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NEVES, D. M.; COELHO FILHO, M. A.; SOUZA, D. T.; MENDES, A. F. S.; COSTA, M. G. C.; SOARES FILHO, W. dos S.; GESTEIRA, A. da S. |
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Afiliação: |
Diana Matos Neves, UESC; MAURICIO ANTONIO COELHO FILHO, CNPMF; D. T. Souza, UFV; Amanda Ferreira da Silva Mendes, UESC; Marcio Gilberto Cardoso Costa, UESC; WALTER DOS SANTOS SOARES FILHO, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF. |
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Título: |
Functional analysis of 9-cis-epoxycarotenoid dioxygenase (NCEDs) genes in response to water deficit in citrus. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE GENÉTICA MOLECULAR DE PLANTAS, 3, 2011, Ilhéus. Resumos. [S. l.]: Sociedade Brasileira de Genética, 2011. 1 CD-ROM. |
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Idioma: |
Inglês |
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Notas: |
pdf 34672 |
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Conteúdo: |
Abscisic acid (ABA) regulates plant adaptive responses to various environmental stresses. The oxidative cleavage of cis-epoxycarotenoids catalyzed by 9-cis-epoxycarotenoid dioxygenase (NCED) is considered to be the rate-limiting step in abscisic acid (ABA) biosynthesis. Here, we analyzed the expression of five NCEDs genes by RT-qPCR in roots and leaves of Rangpur lime (Citrus limonia Osb.) and Sunki mandarin (C. sunki) grown under water deficit. Based on the normalized transpiration rate and fraction of transpirable soil water, we determined three assessment points: 1) start of the water deficit; 2) intermediate stage of water deficit; and 3) permanent wilting point. In water stressed Rangpur lime, NCED2 was strongly induced in leaves and the NCED2, NCED3 and NCED4 were strongly induced in roots. Interestingly, NCED4 showed an expression approximately 15 times higher at permanent wilting point. In Sunki mandarin leaves, no significant differential expression was observed for the 5 genes, whatever the water deficit condition (stressed vs unstressed). However, in Sunki mandarin roots, NCED2, NCED4 and NCED5 were strongly induced at the permanent wilting point (23, 18 and 10 times more in plants stressed, respectively). These results suggest the involvement of the NCED enzymes in controlling the ABA level in roots when subjected to water deficit, and indicate that the multigene family of NCEDs could be considered as good candidate for analysis ABA-mediated drought in Citrus. |
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Palavras-Chave: |
Drought deficit. |
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Thesaurus Nal: |
abscisic acid; Citrus. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02276nam a2200229 a 4500
001 1887059
005 2011-04-29
008 2011 bl uuuu u00u1 u #d
100 1 $aNEVES, D. M.
245 $aFunctional analysis of 9-cis-epoxycarotenoid dioxygenase (NCEDs) genes in response to water deficit in citrus.
260 $aIn: SIMPÓSIO BRASILEIRO DE GENÉTICA MOLECULAR DE PLANTAS, 3, 2011, Ilhéus. Resumos. [S. l.]: Sociedade Brasileira de Genética, 2011. 1 CD-ROM.$c2011
500 $apdf 34672
520 $aAbscisic acid (ABA) regulates plant adaptive responses to various environmental stresses. The oxidative cleavage of cis-epoxycarotenoids catalyzed by 9-cis-epoxycarotenoid dioxygenase (NCED) is considered to be the rate-limiting step in abscisic acid (ABA) biosynthesis. Here, we analyzed the expression of five NCEDs genes by RT-qPCR in roots and leaves of Rangpur lime (Citrus limonia Osb.) and Sunki mandarin (C. sunki) grown under water deficit. Based on the normalized transpiration rate and fraction of transpirable soil water, we determined three assessment points: 1) start of the water deficit; 2) intermediate stage of water deficit; and 3) permanent wilting point. In water stressed Rangpur lime, NCED2 was strongly induced in leaves and the NCED2, NCED3 and NCED4 were strongly induced in roots. Interestingly, NCED4 showed an expression approximately 15 times higher at permanent wilting point. In Sunki mandarin leaves, no significant differential expression was observed for the 5 genes, whatever the water deficit condition (stressed vs unstressed). However, in Sunki mandarin roots, NCED2, NCED4 and NCED5 were strongly induced at the permanent wilting point (23, 18 and 10 times more in plants stressed, respectively). These results suggest the involvement of the NCED enzymes in controlling the ABA level in roots when subjected to water deficit, and indicate that the multigene family of NCEDs could be considered as good candidate for analysis ABA-mediated drought in Citrus.
650 $aabscisic acid
650 $aCitrus
653 $aDrought deficit
700 1 $aCOELHO FILHO, M. A.
700 1 $aSOUZA, D. T.
700 1 $aMENDES, A. F. S.
700 1 $aCOSTA, M. G. C.
700 1 $aSOARES FILHO, W. dos S.
700 1 $aGESTEIRA, A. da S.
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| Registros recuperados : 90 | |
| 1. |  | SANTOS-SEREJO, J. A. dos. Como inovar em germoplasma de fruteiras. 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 (Embrapa Recursos Genéticos e Biotecnologia. Documentos, 304).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 7. | | SOUZA, F. V. D.; CABRAL, J. R. S.; SANTOS-SEREJO, J. A. dos; NEPOMUCENO, O. M. Híbridos de abacaxi com potencial ornamental. Revista Brasileira de Horticultura Ornamental, Campinas, v. 13, p.274-276, 2007. Suplemento. Edição dos Resumos do XVI Congresso Brasileiro de Floricultura e Plantas Ornamentais; III Congresso Brasileiro de Cultura de Tecidos e Plantas; I Simpósio de Plantas Ornamentais Nativas, Goiânia, set. 2007.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
|  |
| 16. | | SANTOS-SEREJO, J. A. dos; BARBOSA, A. M. M.; LUNA, J. V. U. Tamarindo. In: SANTOS-SEREJO, J. A. dos; DANTAS, J. L. L.; SAMPAIO, C. V.; COELHO, Y. da S. (Ed.). Fruticultura tropical: espécies regionais e exóticas. Brasília, DF: Embrapa Informação Tecnológica, 2009. p. 437-455.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 90 | |
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