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| Registros recuperados : 453 | |
| 121. |  | OLIVEIRA, S. A.; AUAD, A. M.; SOUZA, B.; FERREIRA, R. B.; SOUZA, L. S. Influência da temperatura sobre os aspectos biológicos de Sipha flava (Forbes) (Hemiptera: aphididae) na fase imatura. In: CONGRESSO DE PÓS-GRADUAÇÃO DA UFLA, 16., 2007, Lavras, MG. Anais... Lavras: APG/ UFLA, 2007. 1 CD.| Biblioteca(s): Embrapa Gado de Leite. |
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| 123. | | SOUZA, B. M. de; BUENO, V. H. P.; SANTOS, T. M. dos. Porcentagem de parasitismo de Brevicoryne brassicae (Linnaeus, 1758 (Homoptera: Aphididae) em condicoes de campo, em dois cultivares de couve. In: CONGRESSO DA POS-GRADUACAO NA ESAL, 4., 1991, Lavras, MG. Anais... Lavras: ESAL, 1994. p.20.| Biblioteca(s): Embrapa Hortaliças. |
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| 129. | | LOUZADA. SILVA, D.; VIEIRA, T. M.; CARVALHO, J. P.; HERCOS, A. P.; SOUZA, B. M. Uso de abrigos e habitos alimentares de Lontra longicaudis no Lago Paranoa e no Parque Nacional de Brasilia, DF. In: SIMPOSIO ECOLOGIA E BIODIVERSIDADE DO CERRADO, 2002, Brasilia, DF. Perspectivas e desafios para o seculo 21: [programa e resumos]. Brasilia: Embrapa Sede, 2002. p. 40.| Biblioteca(s): Embrapa Cerrados. |
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| 130. | | CRAVO, M. da S.; GALVÃO, E. U. P.; SMYTH, T. J.; SOUZA, B. D. L. de. Sistema bragantino: alternativa inovadora para produção de alimentos em áreas degradadas na Amazônia. Amazônia: ciência & desenvolvimento, Belém, PA, v. 4, n. 7, p. 221-239, jul./dez. 2008.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 135. | | OLIVEIRA, S. A.; SOUZA, B.; AUAD, A. M.; SILVA, D. M.; CARVALHO, C. A. Respostas biológicas de Sipha flava (Forbes, 1884) (Hemiptera: Aphididae) alimentados em diferentes genótipos de capim-elefante. Revista Ciência Agronômica, v. 41, n. 1, p. 107-112, 2010. 8 p.| Biblioteca(s): Embrapa Gado de Leite. |
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| 136. | | PUPO, M. V.; LIMA, M. M. T.; SOUZA, B. L. de; JUNQUEIRA, K. M.; WELLE, J. Sementeia: espaço de diálogo e articulação de resistências no campo e na cidade. Cadernos de Ciência & Tecnologia, Brasília, DF, v. 35, n. 2, p. 268-282, maio/ago. 2018 Título em inglês: Sementeia platform: a virtual network to articulate resistance in the countryside and in the city.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 140. | | SOUZA, M. L. M.; FREITAS-SILVA, O.; TEIXEIRA, A. S.; CASTRO, I. M.; TORREZAN, R.; SOUZA, B. M.; DEZOTTI, M. Aflatoxins degradation by aqueous ozone in different matrices. In: INTERNATIONAL NONTHERMAL FOOD PROCESSING WORKSHOP, 2013, Florianópolis. Research and innovation towards competitiveness: workshop. Florianópolis: FIESC/SENAI, 2013.| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| Registros recuperados : 453 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
14/07/2020 |
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Data da última atualização: |
14/07/2020 |
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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: |
MARTINEZ, H. E. P.; SOUZA, B. P. de; CAIXETA, E. T.; CARVALHO, F. P. de; CLEMENTE, J. M. |
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Afiliação: |
HERMINIA E. P. MARTINEZ, DEPARTAMENT OF AGRONOMY - UFV; BRUNA P. DE SOUZA, DEPARTAMENT OF AGRONOMY - UFV; EVELINE TEIXEIRA CAIXETA MOURA, CNPCa; FELIPE P. DE CARVALHO, DEPARTAMENT OF AGRONOMY - UFV; JUNIA M. CLEMENTE, DEPARTAMENT OF AGRONOMY - UFV. |
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Título: |
Water deficit changes nitrate uptake and expression of some nitrogen related genes in coffee-plants (Coffea arabica L.). |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Scientia Horticulturae, v. 267, 109254, 2020. |
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DOI: |
https://doi.org/10.1016/j.scienta.2020.109254 |
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Idioma: |
Inglês |
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Conteúdo: |
Brazilian coffee cultivation has been expanding into areas of low fertility soils, many times subjected to low water availability, where the use of nitrogen fertilizers is high. To evaluate the effect of water stress on nitrate uptake and on the expression of genes that encode the nitrate uptake and assimilation we have done three experiments with Coffea arabica L. plants. The first was an 8 × 2 factorial (eight coffee cultivars x with or without water stress), with three replicates. We obtained the kinetic parameters of nitrate uptake. The second and third experiments consisted of 2 × 2 (two cultivars x with or without water stress) factorials. One of them was conducted with adequate supply of nitrogen and the other with omission of N. The transcriptional profiles of the genes NRT1.2, NRT3.2, NIA2, GLT, and GLN1.3 were analyzed. Water stress decreased Vmax (maximum velocity of absorption), Km (Michaelis-Menten constant), and Cmin (external concentration at which net uptake of ions is zero) in all cultivars. The cultivar Catuaí Amarelo IAC 62 stood out with high Vmax and low Km in both conditions, and the Cultivar Mundo Novo IAC379-19, although with low Vmax, had low Km and low Cmin, without changes under water stress. In plants under water stress, the genes NRT1.2, NRT3.2, NIA2, and GLT showed higher differential transcription in root systems. GLN1.3 gene had higher relative expression in the shoots. Under water stress, the relative expression of these genes was higher in Mundo Novo IAC 379-19 than in Catuaí Amarelo IAC 62 in both nitrogen doses. MenosBrazilian coffee cultivation has been expanding into areas of low fertility soils, many times subjected to low water availability, where the use of nitrogen fertilizers is high. To evaluate the effect of water stress on nitrate uptake and on the expression of genes that encode the nitrate uptake and assimilation we have done three experiments with Coffea arabica L. plants. The first was an 8 × 2 factorial (eight coffee cultivars x with or without water stress), with three replicates. We obtained the kinetic parameters of nitrate uptake. The second and third experiments consisted of 2 × 2 (two cultivars x with or without water stress) factorials. One of them was conducted with adequate supply of nitrogen and the other with omission of N. The transcriptional profiles of the genes NRT1.2, NRT3.2, NIA2, GLT, and GLN1.3 were analyzed. Water stress decreased Vmax (maximum velocity of absorption), Km (Michaelis-Menten constant), and Cmin (external concentration at which net uptake of ions is zero) in all cultivars. The cultivar Catuaí Amarelo IAC 62 stood out with high Vmax and low Km in both conditions, and the Cultivar Mundo Novo IAC379-19, although with low Vmax, had low Km and low Cmin, without changes under water stress. In plants under water stress, the genes NRT1.2, NRT3.2, NIA2, and GLT showed higher differential transcription in root systems. GLN1.3 gene had higher relative expression in the shoots. Under water stress, the relative expression of these genes was higher in M... Mostrar Tudo |
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Thesagro: |
Café; Fixação de Nitrogênio; Potencial Hídrico; Sistema de Cultivo. |
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Categoria do assunto: |
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Marc: |
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008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.scienta.2020.109254$2DOI
100 1 $aMARTINEZ, H. E. P.
245 $aWater deficit changes nitrate uptake and expression of some nitrogen related genes in coffee-plants (Coffea arabica L.).$h[electronic resource]
260 $c2020
520 $aBrazilian coffee cultivation has been expanding into areas of low fertility soils, many times subjected to low water availability, where the use of nitrogen fertilizers is high. To evaluate the effect of water stress on nitrate uptake and on the expression of genes that encode the nitrate uptake and assimilation we have done three experiments with Coffea arabica L. plants. The first was an 8 × 2 factorial (eight coffee cultivars x with or without water stress), with three replicates. We obtained the kinetic parameters of nitrate uptake. The second and third experiments consisted of 2 × 2 (two cultivars x with or without water stress) factorials. One of them was conducted with adequate supply of nitrogen and the other with omission of N. The transcriptional profiles of the genes NRT1.2, NRT3.2, NIA2, GLT, and GLN1.3 were analyzed. Water stress decreased Vmax (maximum velocity of absorption), Km (Michaelis-Menten constant), and Cmin (external concentration at which net uptake of ions is zero) in all cultivars. The cultivar Catuaí Amarelo IAC 62 stood out with high Vmax and low Km in both conditions, and the Cultivar Mundo Novo IAC379-19, although with low Vmax, had low Km and low Cmin, without changes under water stress. In plants under water stress, the genes NRT1.2, NRT3.2, NIA2, and GLT showed higher differential transcription in root systems. GLN1.3 gene had higher relative expression in the shoots. Under water stress, the relative expression of these genes was higher in Mundo Novo IAC 379-19 than in Catuaí Amarelo IAC 62 in both nitrogen doses.
650 $aCafé
650 $aFixação de Nitrogênio
650 $aPotencial Hídrico
650 $aSistema de Cultivo
700 1 $aSOUZA, B. P. de
700 1 $aCAIXETA, E. T.
700 1 $aCARVALHO, F. P. de
700 1 $aCLEMENTE, J. M.
773 $tScientia Horticulturae$gv. 267, 109254, 2020.
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