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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/01/2016 |
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Data da última atualização: |
25/04/2017 |
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Autoria: |
LAVINSKY, A. O.; MAGALHAES, P. C.; ÁVILA, R. G.; DINIZ, M. M.; SOUZA, T. C. de. |
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Afiliação: |
PAULO CESAR MAGALHAES, CNPMS. |
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Título: |
Partitioning between primary and secondary metabolism of carbon allocated to roots in four maize genotypes under water deficit and its effects on productivity. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
The Crop Journal, v. 3, p. 379-386, 2015. |
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DOI: |
http://dx.doi.org/10.1016/j.cj.2015.04.008 |
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Idioma: |
Inglês |
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Conteúdo: |
Plants may respond to drought by altering biomass allocation to shoots and roots or by changing the metabolic activities in these organs. To determine how drought changes the partitioning of carbon allocated to growth and secondary metabolism in maize roots and how it affects photosynthesis (A) and productivity in maize, we evaluated leaf gas exchange, yield componentes, root morphology, and primary and secondary metabolites including total soluble sugars (TSS), starch (S), phenolics (PHE), and lignin (LIG). Data were collected from pot-grown plants of four maize genotypes: BRS 1010 and 2B710 (sensitive genotypes) and DKB390 and BRS1055 (tolerant genotypes) under two soil water tensions: field capacity (FC,-18 kPa) and water deficit (WD,-138 kPa). WD was applied at the pre-flowering stage for 12 days and then the water supply was restored and maintained at optimum levels until the end of the cycle. For genotype BRS 1055 under FC, the greatest A did not result in greater grain biomass (DGB) because the accumulated photoassimilates had already filled the cells, and thus the excessive TSS synthesized in leaves was allocated to roots in large amounts. However, the sharp decrease in A caused by WD imposition in this genotype did not affect the influx pressure of leaf TSS, which was due largely to conversion of primary metabolites to PHE compounds to increase the length of fine roots. In leaves of DKB390 under WD, both S and TSS were reduced, whereas PHE were increased to prevent excessive water loss and xylem cavitation. Under WD, both BRS1010 and 2B710 genotypes displayed reduced allocation of biomass to shoots and roots and LIG content in leaves, as well as lower A and DGB values. In BRS1010 this response was coupled to S decrease in leaves and TSS increase in roots, whereas in 2B710 there was a concomitant S increase in roots. MenosPlants may respond to drought by altering biomass allocation to shoots and roots or by changing the metabolic activities in these organs. To determine how drought changes the partitioning of carbon allocated to growth and secondary metabolism in maize roots and how it affects photosynthesis (A) and productivity in maize, we evaluated leaf gas exchange, yield componentes, root morphology, and primary and secondary metabolites including total soluble sugars (TSS), starch (S), phenolics (PHE), and lignin (LIG). Data were collected from pot-grown plants of four maize genotypes: BRS 1010 and 2B710 (sensitive genotypes) and DKB390 and BRS1055 (tolerant genotypes) under two soil water tensions: field capacity (FC,-18 kPa) and water deficit (WD,-138 kPa). WD was applied at the pre-flowering stage for 12 days and then the water supply was restored and maintained at optimum levels until the end of the cycle. For genotype BRS 1055 under FC, the greatest A did not result in greater grain biomass (DGB) because the accumulated photoassimilates had already filled the cells, and thus the excessive TSS synthesized in leaves was allocated to roots in large amounts. However, the sharp decrease in A caused by WD imposition in this genotype did not affect the influx pressure of leaf TSS, which was due largely to conversion of primary metabolites to PHE compounds to increase the length of fine roots. In leaves of DKB390 under WD, both S and TSS were reduced, whereas PHE were increased to prevent ... Mostrar Tudo |
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Palavras-Chave: |
Déficit hídrico. |
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Thesagro: |
Amido; Genótipo; Lignina; Milho; Raiz. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02642naa a2200253 a 4500
001 2035551
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008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.cj.2015.04.008$2DOI
100 1 $aLAVINSKY, A. O.
245 $aPartitioning between primary and secondary metabolism of carbon allocated to roots in four maize genotypes under water deficit and its effects on productivity.$h[electronic resource]
260 $c2015
520 $aPlants may respond to drought by altering biomass allocation to shoots and roots or by changing the metabolic activities in these organs. To determine how drought changes the partitioning of carbon allocated to growth and secondary metabolism in maize roots and how it affects photosynthesis (A) and productivity in maize, we evaluated leaf gas exchange, yield componentes, root morphology, and primary and secondary metabolites including total soluble sugars (TSS), starch (S), phenolics (PHE), and lignin (LIG). Data were collected from pot-grown plants of four maize genotypes: BRS 1010 and 2B710 (sensitive genotypes) and DKB390 and BRS1055 (tolerant genotypes) under two soil water tensions: field capacity (FC,-18 kPa) and water deficit (WD,-138 kPa). WD was applied at the pre-flowering stage for 12 days and then the water supply was restored and maintained at optimum levels until the end of the cycle. For genotype BRS 1055 under FC, the greatest A did not result in greater grain biomass (DGB) because the accumulated photoassimilates had already filled the cells, and thus the excessive TSS synthesized in leaves was allocated to roots in large amounts. However, the sharp decrease in A caused by WD imposition in this genotype did not affect the influx pressure of leaf TSS, which was due largely to conversion of primary metabolites to PHE compounds to increase the length of fine roots. In leaves of DKB390 under WD, both S and TSS were reduced, whereas PHE were increased to prevent excessive water loss and xylem cavitation. Under WD, both BRS1010 and 2B710 genotypes displayed reduced allocation of biomass to shoots and roots and LIG content in leaves, as well as lower A and DGB values. In BRS1010 this response was coupled to S decrease in leaves and TSS increase in roots, whereas in 2B710 there was a concomitant S increase in roots.
650 $aAmido
650 $aGenótipo
650 $aLignina
650 $aMilho
650 $aRaiz
653 $aDéficit hídrico
700 1 $aMAGALHAES, P. C.
700 1 $aÁVILA, R. G.
700 1 $aDINIZ, M. M.
700 1 $aSOUZA, T. C. de
773 $tThe Crop Journal$gv. 3, p. 379-386, 2015.
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Embrapa Milho e Sorgo (CNPMS) |
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| Registros recuperados : 10 | |
| 1. |  | RODRIGUES, P. F.; MENEZES, L. de M.; AZAMBUJA, R. C. C. de; SILVEIRA, I. D. B. da; CARDOSO, F. F. Parâmetros da curva de lactação de vacas de corte de diferentes genótipos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
|    |
| 2. | | MENEZES, L. M.; RODRIGUES, P. F.; AZAMBUJA, R. C. C.; MENDONÇA, F. S.; SILVEIRA, I. D. B.; CARDOSO, F. F. Productive and reproductive performance of beef cows according to the order of calving and breed of mated sire. In: JORNADA [DO] NÚCLEO DE ESTUDOS EM SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 8.; SIMPÓSIO INTERNACIONAL SOBRE SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 1., 2013, Porto Alegre. A vez da inovação na pecuária de corte: livro de resumos. Porto Alegre: NESPRO-UFRGS: SENAR, 2013. p. 37. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
|  |
| 3. | | RODRIGUES, P. F.; MENEZES, L. M.; AZAMBUJA, R. C. C.; SUÑÉ, R. W.; SILVEIRA, I. D. B.; CARDOSO, F. F. Milk yield and composition from Angus and Angus-cross beef cows raised in southern Brazil. Journal of Animal Science, Champaign, v. 92, n. 6, p. 2668-2676, June 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 4. | | MENDONÇA, F. S.; MACNEIL, M. D.; LEAL, W. S.; AZAMBUJA, R. C. C.; RODRIGUES, P. F.; CARDOSO, F. F. Crossbreeding effects on growth and efficiency in beef cow-calf systems: evaluation of Angus, Caracu, Hereford and Nelore breed direct, maternal and heterosis effects. Translational Animal Science, v. 3, n. 4, p. 1286-1295, July 2019.| Tipo: Artigo em Periódico Indexado |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 5. | | CAMARGO, S. da S.; AZAMBUJA, R. C. C. de; FEIJÓ, J. de O.; CORRÊA, M. N.; SCHNEIDER, A.; CARDOSO, F. F. Modelagem computacional de indicadores metabólicos para estudo de eficiência reprodutiva em vacas de corte. In: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 10., 2015, Ponta Grossa. Uso de VANTs e sensores para avanços no agronegócio: anais. Ponta Grossa: Universidade Estadual de Ponta Grossa, 2015. Não paginado. SBIAgro.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 6. | | AZAMBUJA, R. C. C.; MENEZES, L. M.; RODRIGUES, P. F.; REIMANN, F. A.; COSTA, R. F.; SCHNEIDER, A.; CORRÊA, M. N.; CARDOSO, F. F. Concentrações séricas de IGF-I no pós-parto recente e eficiência reprodutiva de vacas de corte de diferentes genótipos criadas no sul do Brasil. In: JORNADA [DO] NÚCLEO DE ESTUDOS EM SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 8.; SIMPÓSIO INTERNACIONAL SOBRE SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 1., 2013, Porto Alegre. A vez da inovação na pecuária de corte: livro de resumos. Porto Alegre: NESPRO-UFRGS: SENAR, 2013. p. 19. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 7. | | COSTA, R. F. da; RODRIGUES, P. F.; AZAMBUJA, R. C. C.; MENDONÇA, F. S.; CARDOSO, F. F.; SILVEIRA, I. D. B. Determinação dos constituintes do leite de vacas de corte de acordo com o período de lactação. In: SALÃO INTERNACIONAL DE ENSINO, PESQUISA E EXTENSÃO, 4., 2012. Bagé. Compartilhe saberes, vivencie experiências e almeje sustentabilidade: anais. Bagé: Unipampa, 2012. SIEPE. Online.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 8. | | MENEZES, L. de M.; RODRIGUES, P. F.; AZAMBUJA, R. C. C. de; TEIXEIRA, B. B. M.; SILVEIRA, I. D. B.; CARDOSO, F. F. Temperamento e desempenho de bovinos de corte de diferentes genótipos criados no sul do Brasil. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 49., 2012, Brasília. A produção animal no mundo em transformação: anais. Brasília, DF: SBZ, 2012. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 9. | | COSTA, R. F.; REIS, A. P.; TEIXEIRA, B. B. M.; AZAMBUJA, R. C. C.; YOKOO, M. J. I.; CARDOSO, F. F. Valores econômicos para características de desempenho em sistema de produção de cria de bovinos de corte no sul do Brasil. In: JORNADA [DO] NÚCLEO DE ESTUDOS EM SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 8.; SIMPÓSIO INTERNACIONAL SOBRE SISTEMAS DE PRODUÇÃO DE BOVINOS DE CORTE E CADEIA PRODUTIVA, 1., 2013, Porto Alegre. A vez da inovação na pecuária de corte: livro de resumos. Porto Alegre: NESPRO-UFRGS: SENAR, 2013. p. 25. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 10. | | LAMPERT, V. do N.; YOKOO, M. J. I.; AZAMBUJA, R. C. C.; MORAIS, O. R. de; LOBO, R. N. B.; MORAES, J. C. F.; ALVES, R. M.; CARDOSO, F. F. Economic values for production traits of sheep raised on native pastures of the Pampa biome in Brazil. In: ANNUAL MEETING BRAZILIAN SOCIETY OF ANIMAL SCIENCE, 50., 2013, Campinas. The integration of knowledge in animal production: abstracts. Campinas: SBZ, 2013. Não paginado. 1 CD-ROM. Resumo 6HFT.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Caprinos e Ovinos; Embrapa Pecuária Sul. |
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| Registros recuperados : 10 | |
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