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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
10/08/2017 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAIRO, P. A. R.; OLIVEIRA, L. E. M. de; MESQUITA, A. C.; CUNHA, R. L. |
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Afiliação: |
PAULO ARAQUÉM RAMOS CAIRO, Southwest Bahia State University; LUIZ EDSON MOTA DE OLIVEIRA, UFLA; ALESSANDRO CARLOS MESQUITA, Bahia State University; ROBERTO LISBOA CUNHA, CPATU. |
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Título: |
Seasonal variation in the enzymatic activity of the source-sink system of rubber plants in a clonal garden. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Journal of Rubber Research, v. 18, n. 3, p. 139-147, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Ribulose-1,5-bisphosphate carboxylase oxygenase (Rubisco) is a key enzyme in the reactions of CO2 assimilation in plants. Primary carbohydrates are converted into sucrose, which depends on the sucrose-P synthase (SPS) as a pivotal enzyme. In rubber tree, sucrose hydrolysis can occur intensively in the laticiferous cells of the stem and depends on the invertase (Inv) and sucrose synthase (SuSy) enzyme, producing reducing sugars, which are precursors of latex biosynthesis. The aim of this work was to evaluate seasonal changes in Rubisco, SPS, Inv and SuSy activities of rubber plants in a clonal garden (RRIM 600 and GT 1 clones), during warm/rainy and cold/dry seasons in Lavras, Minas Gerais, Brazil. The climatic differences in warm/rainy and cold/dry periods caused significant changes in all enzymatic activities evaluated. All enzymes had better performances in the warm/rainy period than in cold/dry. Enzymatic activities seemed to be more affected by temperature changes than by precipitation decrease. |
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Thesagro: |
Metabolismo; Sacarose; Seringueira; Variação Sazonal. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01643naa a2200205 a 4500
001 2073869
005 2021-12-22
008 2015 bl uuuu u00u1 u #d
100 1 $aCAIRO, P. A. R.
245 $aSeasonal variation in the enzymatic activity of the source-sink system of rubber plants in a clonal garden.$h[electronic resource]
260 $c2015
520 $aRibulose-1,5-bisphosphate carboxylase oxygenase (Rubisco) is a key enzyme in the reactions of CO2 assimilation in plants. Primary carbohydrates are converted into sucrose, which depends on the sucrose-P synthase (SPS) as a pivotal enzyme. In rubber tree, sucrose hydrolysis can occur intensively in the laticiferous cells of the stem and depends on the invertase (Inv) and sucrose synthase (SuSy) enzyme, producing reducing sugars, which are precursors of latex biosynthesis. The aim of this work was to evaluate seasonal changes in Rubisco, SPS, Inv and SuSy activities of rubber plants in a clonal garden (RRIM 600 and GT 1 clones), during warm/rainy and cold/dry seasons in Lavras, Minas Gerais, Brazil. The climatic differences in warm/rainy and cold/dry periods caused significant changes in all enzymatic activities evaluated. All enzymes had better performances in the warm/rainy period than in cold/dry. Enzymatic activities seemed to be more affected by temperature changes than by precipitation decrease.
650 $aMetabolismo
650 $aSacarose
650 $aSeringueira
650 $aVariação Sazonal
700 1 $aOLIVEIRA, L. E. M. de
700 1 $aMESQUITA, A. C.
700 1 $aCUNHA, R. L.
773 $tJournal of Rubber Research$gv. 18, n. 3, p. 139-147, 2015.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
10/10/2022 |
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Data da última atualização: |
13/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SANTOS, A. P. M. dos; SANTOS, E. M.; OLIVEIRA, J. S. de; CARVALHO, G. G. P. de; ARAUJO, G. G. L. de; ZANINE, A. M.; PINHO, R. M. A.; FERREIRA, D. de J.; MACEDO, A. J. da S.; ALVES, J. P. |
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Afiliação: |
ANA PAULA MAIA DOS SANTOS, UFPB; EDSON MAURO SANTOS, UFPB; JULIANA SILVA DE OLIVEIRA, UFPB; GLEIDSON GIORDANO PINTO DE CARVALHO, UFBA; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; ANDERSON MOURA ZANINE, UFMA; RICARDO MARTINS ARAÚJO PINHO, UFMA; DANIELE DE JESUS FERREIRA, UFMA; ALBERTO JEFFERSON DA SILVA MACEDO, UFPB; JOYCE PEREIRA ALVES, UFPB. |
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Título: |
Effect of urea on gas and effluent losses, microbial populations, aerobic stability and chemical composition of corn(Zea mays L.) silage. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Revista de la Facultad de Ciencias Agrarias UNCuyo, v. 53, n. 1, p. 309-319, 2021. |
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ISSN: |
1853-8665 |
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Idioma: |
Inglês |
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Conteúdo: |
We evaluated the effects of urea addition on gas and effluent losses, fermentation profile, microbial populations, aerobic stability and chemical composition of corn silages. A completely randomised design with five levels of urea (0, 0.5, 1.0, 1.5, and 2.0% based on dry matter) and five replicates was used. A decreasing linear effect of urea levels on effluent losses in corn silages was observed. In parallel, an increasing linear effect of urea levels on pH, increasing from 3.49 to 4.12 in silages without urea in relation to silages with the maximum urea level, was also observed. Urea addition improved the aerobic stability of the silages, with 62 h for the silages without urea and from 90 to >96 h for the silages with urea. Based on the results of the principal components, two groups (I and II) could be distinguished. The most discriminating variables in group I were dry matter (-0.9), pH (-1.2) and lactic acid bacteria (-0.9), while in group II, effluent losses (1.0), ethanol (1.0), acetic acid (0.8) and gas losses (0.8) were most important. The use of urea at inclusion levels of around 2% in corn silage reduced gas losses, improved the nutritive value and promote the aerobic stability of silages. |
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Palavras-Chave: |
Aditivos para silagem; Bactérias lácticas; Composição química da silagem de milho; Leveduras. |
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Thesagro: |
Ácido Lático; Milho; Silagem; Uréia; Zea Mays. |
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Thesaurus NAL: |
Corn; Lactic acid; Lactic acid bacteria; Silage; Silage additives; Silage effluent; Yeasts. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1147230/1/Effect-of-urea-on-gas-and-effluent-losses-microbial-populations-aerobic-stability-2021.pdf
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Marc: |
LEADER 02502naa a2200433 a 4500
001 2147230
005 2023-01-13
008 2021 bl uuuu u00u1 u #d
022 $a1853-8665
100 1 $aSANTOS, A. P. M. dos
245 $aEffect of urea on gas and effluent losses, microbial populations, aerobic stability and chemical composition of corn(Zea mays L.) silage.$h[electronic resource]
260 $c2021
520 $aWe evaluated the effects of urea addition on gas and effluent losses, fermentation profile, microbial populations, aerobic stability and chemical composition of corn silages. A completely randomised design with five levels of urea (0, 0.5, 1.0, 1.5, and 2.0% based on dry matter) and five replicates was used. A decreasing linear effect of urea levels on effluent losses in corn silages was observed. In parallel, an increasing linear effect of urea levels on pH, increasing from 3.49 to 4.12 in silages without urea in relation to silages with the maximum urea level, was also observed. Urea addition improved the aerobic stability of the silages, with 62 h for the silages without urea and from 90 to >96 h for the silages with urea. Based on the results of the principal components, two groups (I and II) could be distinguished. The most discriminating variables in group I were dry matter (-0.9), pH (-1.2) and lactic acid bacteria (-0.9), while in group II, effluent losses (1.0), ethanol (1.0), acetic acid (0.8) and gas losses (0.8) were most important. The use of urea at inclusion levels of around 2% in corn silage reduced gas losses, improved the nutritive value and promote the aerobic stability of silages.
650 $aCorn
650 $aLactic acid
650 $aLactic acid bacteria
650 $aSilage
650 $aSilage additives
650 $aSilage effluent
650 $aYeasts
650 $aÁcido Lático
650 $aMilho
650 $aSilagem
650 $aUréia
650 $aZea Mays
653 $aAditivos para silagem
653 $aBactérias lácticas
653 $aComposição química da silagem de milho
653 $aLeveduras
700 1 $aSANTOS, E. M.
700 1 $aOLIVEIRA, J. S. de
700 1 $aCARVALHO, G. G. P. de
700 1 $aARAUJO, G. G. L. de
700 1 $aZANINE, A. M.
700 1 $aPINHO, R. M. A.
700 1 $aFERREIRA, D. de J.
700 1 $aMACEDO, A. J. da S.
700 1 $aALVES, J. P.
773 $tRevista de la Facultad de Ciencias Agrarias UNCuyo$gv. 53, n. 1, p. 309-319, 2021.
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