| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
19/07/2019 |
|
Data da última atualização: |
11/09/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SANTOS, S. G. dos; RIBEIRO, F. da S.; ALVES, G. C.; SANTOS, L. A.; REIS, V. M. |
|
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. |
|
Título: |
Inoculation with five diazotrophs alters nitrogen metabolism during the initial growth of sugarcane varieties with contrasting responses to added nitrogen. |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Plant and Soil, First Online, 08 May, 2019 |
|
Idioma: |
Inglês |
|
Notas: |
Publicado na Plant and Soil, v. 451, 25-44, 2020. |
|
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 |
|
Palavras-Chave: |
Diazotrophic bacteria; Enzymatic activity; Saccharum sp. |
|
Thesaurus Nal: |
Nitrogen. |
|
Categoria do assunto: |
S Ciências Biológicas |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Registros recuperados : 5 | |
| 1. |  | GOMES, M. A. F.; PEREIRA, L. C.; SILVA, A. K. L.; PEREIRA, A. S.; TOSTO, S. G.; SOUSA JUNIOR, P. M. DE. Aspectos qualitativos da água do Rio Pindaré na Amazônia Maranhense. Revista Terceira Margem Amazônia, v. 8, n. 19, p. 253-269, 2023.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Territorial. |
|    |
| 2. | | ALVES, M. H. D.; COSTA, A. R. de S.; CORREA, J. S.; SILVA, K. W. S.; TEIXEIRA, O. M. M.; SOUSA JUNIOR, P. M. de. Levantamento das propriedades químicas do solo em áreas com diferentes usos no município de Igarapé-Açu/PA. In: ENCONTRO MARANHENSE DE CIÊNCIAS AGRÁRIAS, 5., 2018, Imperatriz. Anais... Imperatriz: UEMASUL, 2018. p. 88-91.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 3. | | CORREA, J. S.; SILVA, K. W. dos S.; ALVES, M. H. D.; COSTA, A. R. de S.; GONÇALVES, A. C. da S.; SOUSA JUNIOR, P. M. de. Levantamento das propriedades químicas do solo em cultivo de mandioca (Manihot esculenta Crantz.) e feijão-caupi (Vigna unguiculata) no município de Augusto Correa/PA. In: ENCONTRO MARANHENSE DE CIÊNCIAS AGRÁRIAS, 5., 2018, Imperatriz. Anais... Imperatriz: UEMASUL, 2018. p. 133-136.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 4. | | SILVA, K. W. dos S.; CORREA, J. S.; COSTA, A. R. de S.; ALVES, M. H. D.; TEIXEIRA, O. M. M.; SOUSA JUNIOR, P. M. de. Levantamento dos atributos químicos do solo em cultivos de mandioca e milho no município de Primavera/PA, Brasil. In: ENCONTRO MARANHENSE DE CIÊNCIAS AGRÁRIAS, 5., 2018, Imperatriz. Anais... Imperatriz: UEMASUL, 2018. p. 97-102.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| 5. | | ALVES, M. H. D.; SILVA, K. W. dos S.; CORREA, J. S.; COSTA, A. R. de S.; SOUSA JUNIOR, P. M. de; ARAGÃO, R. M. de; TEIXEIRA, O. M. M.; GONÇALVES, A. C. da S. Análise da qualidade dos tributários que banham a cidade de Capanema - PA a partir de parâmetros físico-químicos. In: CONGRESSO BRASILEIRO DE QUÍMICA, 58., 2018, São Luis. Trabalhos. Rio de Janeiro: ABQ, 2018.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
| |
| Registros recuperados : 5 | |
|
| Expressão de busca inválida. Verifique!!! |
|
|
