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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
19/07/2019 |
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Data da última atualização: |
11/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, S. G. dos; RIBEIRO, F. da S.; ALVES, G. C.; SANTOS, L. A.; REIS, V. M. |
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Afiliação: |
Silvana Gomes dos Santos, Universidade Federal Rural do Rio de Janeiro; Flaviane da Silva Ribeiro, Instituto Federal do Pará, Campus Bragança; Gabriela Cavalcanti Alves, UFRRJ; Leandro Azevedo Santos, UFRRJ; VERONICA MASSENA REIS, CNPAB. |
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Título: |
Inoculation with five diazotrophs alters nitrogen metabolism during the initial growth of sugarcane varieties with contrasting responses to added nitrogen |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Plant and Soil, First Online, 08 May, 2019 |
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Idioma: |
Inglês |
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Notas: |
Publicado na Plant and Soil, v. 451, 25-44, 2020. |
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Conteúdo: |
We examined the influence of inoculation with five species/strains of diazotrophic bacteria on the modulation of two enzymes involved in the assimilation of N and on the soluble N fractions in the sugarcane varieties RB867515 (adapted for low fertility soils) and IACSP95-5000 (adapted for medium to high fertility soils) under high- (3 mM) and low (0.3 mM)-N conditions in hydroponic cultivation for 59 days.The sugarcane plants were produced in three steps to obtain the hydroponic cultivation: the supply of 3 mM N for 30 days (first harvest), N depletion for 72 h (second harvest), and cultivation in high- and low-N conditions over 26 days (final harvest). Inoculation was performed by immersion of the minisetts in a diluted solution of five diazotrophic bacteria. After the final harvest, plants were divided into roots and shoots to assess their dry weight and N, P, and K accumulation.The variety played an important role in the interaction with diazotrophs, each showing distinct behavior in the activity of their N-assimilation enzymes. The nitrate reductase activity (NRa?EC 1.7.1.1) was increased in var. RB867515 by 26% in the shoots and by 48% in the roots after 72 h under N depletion, while var. IACSP95-5000 showed a reduced enzymatic activity in the roots (by 62%) but not in the shoots. Under high-N conditions, the inoculated IACSP95-5000 plants showed 31% higher glutamine synthetase activity (GSa?EC 6.31.2) compared with 19% in RB867515. Under low-N conditions, the GSas were 21% and 16% higher in the inoculated RB867515 and IACSP95-5000 plants, respectively, compared with that of the control. The content of nitrogen in the form of nitrate (N-nitrate) confirmed these varietal differences, but the soluble sugar content did not. MenosWe examined the influence of inoculation with five species/strains of diazotrophic bacteria on the modulation of two enzymes involved in the assimilation of N and on the soluble N fractions in the sugarcane varieties RB867515 (adapted for low fertility soils) and IACSP95-5000 (adapted for medium to high fertility soils) under high- (3 mM) and low (0.3 mM)-N conditions in hydroponic cultivation for 59 days.The sugarcane plants were produced in three steps to obtain the hydroponic cultivation: the supply of 3 mM N for 30 days (first harvest), N depletion for 72 h (second harvest), and cultivation in high- and low-N conditions over 26 days (final harvest). Inoculation was performed by immersion of the minisetts in a diluted solution of five diazotrophic bacteria. After the final harvest, plants were divided into roots and shoots to assess their dry weight and N, P, and K accumulation.The variety played an important role in the interaction with diazotrophs, each showing distinct behavior in the activity of their N-assimilation enzymes. The nitrate reductase activity (NRa?EC 1.7.1.1) was increased in var. RB867515 by 26% in the shoots and by 48% in the roots after 72 h under N depletion, while var. IACSP95-5000 showed a reduced enzymatic activity in the roots (by 62%) but not in the shoots. Under high-N conditions, the inoculated IACSP95-5000 plants showed 31% higher glutamine synthetase activity (GSa?EC 6.31.2) compared with 19% in RB867515. Under low-N conditions, the GSas were... Mostrar Tudo |
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Palavras-Chave: |
Diazotrophic bacteria; Enzymatic activity; Saccharum sp. |
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Thesaurus Nal: |
Nitrogen. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 02516naa a2200229 a 4500
001 2110764
005 2020-09-11
008 2019 bl uuuu u00u1 u #d
100 1 $aSANTOS, S. G. dos
245 $aInoculation with five diazotrophs alters nitrogen metabolism during the initial growth of sugarcane varieties with contrasting responses to added nitrogen$h[electronic resource]
260 $c2019
500 $aPublicado na Plant and Soil, v. 451, 25-44, 2020.
520 $aWe examined the influence of inoculation with five species/strains of diazotrophic bacteria on the modulation of two enzymes involved in the assimilation of N and on the soluble N fractions in the sugarcane varieties RB867515 (adapted for low fertility soils) and IACSP95-5000 (adapted for medium to high fertility soils) under high- (3 mM) and low (0.3 mM)-N conditions in hydroponic cultivation for 59 days.The sugarcane plants were produced in three steps to obtain the hydroponic cultivation: the supply of 3 mM N for 30 days (first harvest), N depletion for 72 h (second harvest), and cultivation in high- and low-N conditions over 26 days (final harvest). Inoculation was performed by immersion of the minisetts in a diluted solution of five diazotrophic bacteria. After the final harvest, plants were divided into roots and shoots to assess their dry weight and N, P, and K accumulation.The variety played an important role in the interaction with diazotrophs, each showing distinct behavior in the activity of their N-assimilation enzymes. The nitrate reductase activity (NRa?EC 1.7.1.1) was increased in var. RB867515 by 26% in the shoots and by 48% in the roots after 72 h under N depletion, while var. IACSP95-5000 showed a reduced enzymatic activity in the roots (by 62%) but not in the shoots. Under high-N conditions, the inoculated IACSP95-5000 plants showed 31% higher glutamine synthetase activity (GSa?EC 6.31.2) compared with 19% in RB867515. Under low-N conditions, the GSas were 21% and 16% higher in the inoculated RB867515 and IACSP95-5000 plants, respectively, compared with that of the control. The content of nitrogen in the form of nitrate (N-nitrate) confirmed these varietal differences, but the soluble sugar content did not.
650 $aNitrogen
653 $aDiazotrophic bacteria
653 $aEnzymatic activity
653 $aSaccharum sp
700 1 $aRIBEIRO, F. da S.
700 1 $aALVES, G. C.
700 1 $aSANTOS, L. A.
700 1 $aREIS, V. M.
773 $tPlant and Soil, First Online, 08 May, 2019
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Embrapa Agrobiologia (CNPAB) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
27/01/2014 |
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Data da última atualização: |
22/10/2014 |
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Tipo da produção científica: |
Orientação de Tese de Pós-Graduação |
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Autoria: |
SOUZA, R. C. S. N. P. |
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Afiliação: |
ROBERTO CARLOS SOARES NALON PEREIR SOUZA, UFJF. |
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Título: |
Algoritmos online baseados em vetores suporte para regressão clássica e ortogonal. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Juiz de Fora: Universidade Federal de Juiz de Fora, 2013. |
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Idioma: |
Português |
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Notas: |
Tese (Mestrado em Ciência da Computação). Universidade Federal de Juiz de Fora. Juiz de Fora - MG. Co-orientador: Wagner Antonio Arbex, Embrapa Gado de Leite. |
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Palavras-Chave: |
Ciencia da computação; Inteligência artificial. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 00593nam a2200133 a 4500
001 1977582
005 2014-10-22
008 2013 bl uuuu m 00u1 u #d
100 1 $aSOUZA, R. C. S. N. P.
245 $aAlgoritmos online baseados em vetores suporte para regressão clássica e ortogonal.
260 $aJuiz de Fora: Universidade Federal de Juiz de Fora$c2013
500 $aTese (Mestrado em Ciência da Computação). Universidade Federal de Juiz de Fora. Juiz de Fora - MG. Co-orientador: Wagner Antonio Arbex, Embrapa Gado de Leite.
653 $aCiencia da computação
653 $aInteligência artificial
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