High manganese tolerance and biooxidation ability of Serratia marcescens isolated from manganese mine water in Minas Gerais, Brazil.
| dc.contributor.author | Barboza, Natália Rocha | |
| dc.contributor.author | Morais, Mônica Mendes Cordeiro Araújo | |
| dc.contributor.author | Queiroz, Pollyana Santos | |
| dc.contributor.author | Amorim, Soraya Sander | |
| dc.contributor.author | Cota, Renata Guerra de Sá | |
| dc.contributor.author | Leão, Versiane Albis | |
| dc.date.accessioned | 2018-10-02T13:02:26Z | |
| dc.date.available | 2018-10-02T13:02:26Z | |
| dc.date.issued | 2017 | |
| dc.description.abstract | anganese is an important metal for the maintenance of several biological functions, but it can be toxic in high concentrations. One of the main forms of human exposure to metals, such as manganese (Mn), is the consumption of solar salt contaminated. Mn-tolerant bacteria could be used to decrease the concentration of this metal from contaminated sites through safer environmental-friendly alternative technology in the future. Therefore, this study was undertaken to isolate and identify Mn resistant bacteria from water samples collected from a Mn mine in the Iron Quadrangle region (Minas Gerais, Brazil). Two bacterial isolates were identified as Serratia marcescens based on morphological, biochemical, 16S rDNA gene sequencing and phylogeny analysis. Maximum resistance of the selected isolates against increasing concentrations of Mn(II), up to 1200 mg L-1 was determined in solid media. A batch assay was developed to analyze and quantify the Mn removal capacities of the isolates. Biological Mn removal capacities of over 55% were detected for both isolates. Whereas that mechanism like biosorption, precipitation and oxidation could be explaining the Mn removal, we seek to give an insight into some of the molecular mechanisms adopted by S. marcescens isolates. For this purpose, the following approaches were adopted: leucoberbelin blue I assay, Mn(II) oxidation by cell-free filtrate and electron microscopy and energy-dispersive X-ray spectroscopy analyses. Overall, these results indicate that S. marcescens promotes Mn removal in an indirect mechanism by the formation of Mn oxides precipitates around the cells, which should be further explored for potential biotechnological applications for water recycling both in hydrometallurgical and mineral processing operations. | pt_BR |
| dc.identifier.citation | BARBOZA, N. R. et al. High manganese tolerance and biooxidation ability of Serratia marcescens isolated from manganese mine water in Minas Gerais, Brazil. Frontiers in Microbiology, v. 8, p. 1-11, out. 2017. Disponível em: <https://www.frontiersin.org/articles/10.3389/fmicb.2017.01946/full>. Acesso em: 03 maio 2018. | pt_BR |
| dc.identifier.issn | 1664302X | |
| dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/10296 | |
| dc.language.iso | en_US | pt_BR |
| dc.rights | aberto | pt_BR |
| dc.rights.license | This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. Fonte: o próprio artigo. | pt_BR |
| dc.subject | Bioremediation | pt_BR |
| dc.subject | Manganese oxidation | pt_BR |
| dc.title | High manganese tolerance and biooxidation ability of Serratia marcescens isolated from manganese mine water in Minas Gerais, Brazil. | pt_BR |
| dc.type | Artigo publicado em periodico | pt_BR |