Data/hora: 19/06/2024 10:03:49

Biblioteca(s): | Embrapa Agrobiologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 2
Data corrente: | 21/05/2021
Data da última atualização: | 21/05/2021
Autoria: | DIAS, A. C.; ALVES, G. C.; SILVA, T. F. R. da; ALVES, B. J. R.; SANTOS, L. A.; REIS, V. M.
Afiliação: | ALBIANE CARVALHO DIAS, UFRRJ; GABRIELA CAVALCANTI ALVES, UFRRJ; THAMIRES FERREIRA RODRIGUES DA SILVA, UFRRJ; BRUNO JOSE RODRIGUES ALVES, CNPAB; LEANDRO AZEVEDO SANTOS, UFRRJ; VERONICA MASSENA REIS, CNPAB.
Título: | Comparison of N uptake of maize inoculated with two diazotrophic bacterial species grown under two N levels.
Ano de publicação: | 2021
Fonte/Imprenta: | Archives of Agronomy and Soil Science, Published online: 17 May 2021.
ISSN: | 0365-0340
DOI: | https://doi.org/10.1080/03650340.2021.1922672
Idioma: | Inglês
Conteúdo: | We investigated how plant inoculation with two diazotrophic bacteria would influence the modulation of root architecture and parameters associated with N uptake rate under high and low NO3 &#8722; availability. The treatments were arranged in a 2 × 3 factorial design, the first factor being N dose (0.3 and 3.0 mM, or low and high N, respectively) and the second being inoculation with Herbaspirillum seropedicae strain ZAE94 (Hs-ZAE94) , Azospirillum brasilense strain Sp245 (Ab-Sp245) and an uninoculated control. The parameters evaluated were: root architecture, mineral N in the growth solution, soluble metabolites, and activities of two N enzymes, dry mass, N accumulation, and the ratio of plant dry mass to N accumulation (NUE). Plant parameters improved with higher N availability. Only under high N, the inoculation with Ab-Sp245 brought about a change in root architecture with an improvement in root surface area, which was in agreement with an increased plant dry matter, N accumulation, and NUE, which was not always observed on either sampling date, 24 and 32 days after transfer to the hydroponic system. The shift in root architecture and the maintenance of N uptake per unit of root area by inoculation with Ab-Sp245 was likely the main effect.
Palavras-Chave: | Plant growth promoting.
Thesaurus Nal: | Azospirillum brasilense; Herbaspirillum seropedicae; Nitrates; Zea mays subsp. mays.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (41728-1) - UPC - AP - DD -  -  -  - DIS