Data/hora: 25/06/2024 12:26:13

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 28/11/2018
Data da última atualização: | 02/05/2019
Autoria: | BREDA. F. A. da F.; SILVA, T. F. R. da; SANTOS, S. G. dos; ALVES, G. C.; REIS, V. M.
Afiliação: | UFRRJ; THAMIRES FERREIRA RODRIGUES DA SILVA, UFRRJ; SILVANA GOMES DOS SANTOS, UFRRJ; GABRIELA CAVALCANTI ALVES, UFRRJ; VERONICA MASSENA REIS, CNPAB.
Título: | Modulation of nitrogen metabolism of maize plants inoculated with Azospirillum brasilense and Herbaspirillum seropedicae.
Ano de publicação: | 2019
Fonte/Imprenta: | Archives of Microbiology, v. 201, n. 4, p. 547-558, 2019.
DOI: | 10.1007/s00203-018-1594-z
Idioma: | Português
Conteúdo: | Maize is highly responsive to the application of nitrogen to achieve high productivity. Inoculation with diazotrophic bacteria can improve plant growth with low N fertilization. The objective was to evaluate the inoculation of two species of diazotrophs on N metabolism in maize plants, in the presence of two concentrations of nitrogen in a hydroponic system. A factorial arrangement composed of two N levels (3.0 and 0.3 mM), with the presence of Hs?Herbaspirillum seropedicae, and Ab?Azospirillum brasilense or not. The parameters used were dry mass; N, P, and K accumulation; nitrate reductase activity; soluble fractions in roots and leaves. The inoculation altered the N metabolism and promoted greater development of maize plants, as well as a higher accumulation of P and K in the shoots. A more intensive process of N assimilation was evidenced when the plants were inoculated with H. seropedicae, leading to increased levels of NO3&#8722; and reduced N-amino, sugars, and NH4+ in leaves associated with high N level, opposite of A. brasilense.
Palavras-Chave: | Inoculation Diazotrophs; Soluble fractions.
Thesaurus Nal: | Nitrogen.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (40986-1) - UPC - AP - DD -  -  -  - DIS