Data/hora: 03/06/2024 09:28:05

Provedor de dados: | 58
País: | Brazil
Título: | Endophytic Bacillus strains enhance pearl millet growth and nutrient uptake under low-P
Autores: | Ribeiro,Vitória Palhares; Marriel,Ivanildo Evódio; Sousa,Sylvia Morais de; Lana,Ubiraci Gomes de Paula; Mattos,Bianca Braz; Oliveira,Christiane Abreu de; Gomes,Eliane Aparecida.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Endophytic; Indole-acetic acid; Phosphate solubilizing; Plant growth promotion; Siderophores.
Resumo: | Abstract Bacterial endophytes are considered to have a beneficial effect on host plants, improving their growth by different mechanisms. The objective of this study was to investigate the capacity of four endophytic Bacillus strains to solubilize iron phosphate (Fe-P), produce siderophores and indole-acetic acid (IAA) in vitro, and to evaluate their plant growth promotion ability in greenhouse conditions by inoculation into pearl millet cultivated in a P-deficient soils without P fertilization, with Araxá rock phosphate or soluble triple superphosphate. All strains solubilized Fe-P and three of them produced carboxylate-type siderophores and high levels of IAA in the presence of tryptophan. Positive effect of inoculation of some of these strains on shoot and root dry weight and the N P K content of plants cultivated in soil with no P fertilization might result from the synergistic combination of multiple plant growth promoting (PGP) traits. Specifically, while B1923 enhanced shoot and root dry weight and root N P content of plants cultivated with no P added, B2084 and B2088 strains showed positive performance on biomass production and accumulation of N P K in the shoot, indicating that they have higher potential to be microbial biofertilizer candidates for commercial applications in the absence of fertilization.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500040
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1016/j.bjm.2018.06.005
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.49 suppl.1 2018
Fonte: | info:eu-repo/semantics/openAccess