Data/hora: 17/06/2024 16:59:34

Biblioteca(s): | Embrapa Agrobiologia.
Tipo da produção científica: | Artigo em Periódico Indexado
Data corrente: | 27/10/2023
Data da última atualização: | 27/10/2023
Autoria: | CARVALHO, A. D.; ALVES, G. C.; ALVES, B. J. R.; SANTOS, L. A.; REIS, V. M.
Afiliação: | ALBIANE DIAS CARVALHO, UFRRJ; GABRIELA CAVALCANTI ALVES, UFRRJ; BRUNO JOSE RODRIGUES ALVES, CNPAB; LEANDRO AZEVEDO SANTOS, UFRRJ; VERONICA MASSENA REIS, CNPAB.
Título: | Root development and nitrogen acquisition of maize inoculated with two species of diazotrophs;
Ano de publicação: | 2023
Fonte/Imprenta: | Bragantia, v. 82, p. 1-13, 2023.
DOI: | https://doi.org/10.1590/1678-4499.20230060
Idioma: | Inglês
Conteúdo: | Plant-growth-promoting bacteria of the genus Azospirillum and Herbaspirillum can improve crop yields of maize in tropical environments. The main mechanism proposed for its promotion is related to the auxins produced by these species. The aim of this study was to compare the maize growth response of inoculation using two species, Azospirillum baldaniorum Sp245 (Ab-Sp245) and Herbaspirillum seropedicae ZAE94 (Hs-ZAE94) during the initial growth under controlled conditions. A pot experiment was conducted with five harvests measuring bacterial counts, root morphology, biomass, and nitrogen content, and soluble metabolites for 38 days. Depending on the harvest period, a differential growth response between the two strains test was compared to the control. Plants use the bacterium applied to improve nitrogen acquisition and transform it into higher biomass and nitrogen accumulation, especially for Ab-Sp245. On the other side, Hs-ZAE94 altered the soluble metabolites resulting in higher NO3 - , NH4 + , and N-amino and lower soluble fractions compared to Ab-Sp245 and the control. The observed plant-bacteria interaction is closely fine-tuned and regulated by the strain used and differences in growth promotion effects cannot solely attributed to the root morphology.
Palavras-Chave: | Plant bacteria interaction; Root architecture.
Thesaurus Nal: | Nitrogen metabolism.
Categoria do assunto: | S Ciências Biológicas
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (42188-1) - UPC - AP - DD -  -  -  - DIS