Maize endophytic bacteria as mineral phosphate solubilizers
| Autor: | V. L. dos Santos, Ivanildo Evódio Marriel, Christiane Abreu de Oliveira, José Edson Fontes Figueiredo, Eliane Aparecida Gomes, V. P. Ribeiro, C. S. de Abreu, B. A. Barros, Ubiraci Gomes de Paula Lana |
|---|---|
| Přispěvatelé: | Universidade Federal de São João Del Rei, JOSE EDSON FONTES FIGUEIREDO, CNPMS, CHRISTIANE ABREU DE OLIVEIRA PAIVA, CNPMS, Universidade Federal de Minas Gerais, ELIANE APARECIDA GOMES, CNPMS, BEATRIZ DE ALMEIDA BARROS, CNPMS, UBIRACI GOMES DE PAULA LANA, CNPMS, IVANILDO EVODIO MARRIEL, CNPMS. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine DNA Bacterial Biócido solubilizante Fosfato Biofertilizer chemistry.chemical_element 01 natural sciences DNA Ribosomal Gluconates Plant Roots Zea mays Phosphates 03 medical and health sciences chemistry.chemical_compound RNA Ribosomal 16S Botany Genetics Endophytes Food science Molecular Biology Phylogeny Soil Microbiology Growth medium biology Bacteria Phosphorus Bactéria endofítica General Medicine Sequence Analysis DNA Phosphate biology.organism_classification Phosphate solubilizing bacteria Plant Leaves 030104 developmental biology chemistry Ácido Orgânico Gluconic acid Soil microbiology 010606 plant biology & botany |
| Zdroj: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
| Popis: | In the present study, we demonstrated the in vitro activity of endophytic phosphate-solubilizing bacteria (PSB). Fifty-five endophytic PSB that were isolated from sap, leaves, and roots of maize were tested for their ability to solubilize tricalcium phosphate and produce organic acid. Partial sequencing of the 16S rRNA-encoding gene showed that the isolates were from the genus Bacillus and different species of Enterobacteriaceae. The phosphate solubilization index on solid medium and phosphate solubilization in liquid medium varied significantly among the isolates. There was a statistically significant difference (P ≤ 0.05) for both, the values of phosphate-solubilizing activity and pH of the growth medium, among the isolates. Pearson correlation was statistically significant (P ≤ 0.05) between P-solubilization and pH (R = -0.38), and between the gluconic acid production and the lowering of the pH of the liquid medium at 6 (R = 0.28) and 9 days (R = 0.39). Gluconic acid production was prevalent in all the PSB studied, and Bacillus species were most efficient in solubilizing phosphate. This is the first report on the characterization of bacterial endophytes from maize and their use as potential biofertilizers. In addition, this may provide an alternative strategy for improving the phosphorus acquisition efficiency of crop plants in tropical soils. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|