Impact of lead (Pb2+) on the growth and biological activity of serratia marcescens selected for wastewater treatment and identification of its zntR gene-a metal efflux regulator

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Autor(es): dc.creatorFerreira, Gustavo Magno dos Reis-
Autor(es): dc.creatorPires, Josiane Ferreira-
Autor(es): dc.creatorRibeiro, Luciana Silva-
Autor(es): dc.creatorCarlier, Jorge Dias-
Autor(es): dc.creatorCosta, Maria Clara-
Autor(es): dc.creatorSchwan, Rosane Freitas-
Autor(es): dc.creatorSilva, Cristina Ferreira-
Data de aceite: dc.date.accessioned2026-02-09T12:37:23Z-
Data de disponibilização: dc.date.available2026-02-09T12:37:23Z-
Data de envio: dc.date.issued2023-05-15-
Data de envio: dc.date.issued2023-05-15-
Data de envio: dc.date.issued2022-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/56796-
Fonte completa do material: dc.identifierhttps://link.springer.com/article/10.1007/s11274-023-03535-1-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1165008-
Descrição: dc.descriptionMicroorganisms isolated from contaminated areas play an important role in bioremediation processes. They promote heavy metal removal from the environment by adsorbing ions onto the cell wall surface, accumulating them inside the cells, or reducing, complexing, or precipitating these substances in the environment. Microorganism-based bioremediation processes can be highly efficient, low-cost and have low environmental impact. Thus, the present study aimed to select Pb2+-resistant bacteria and evaluate the growth rate, biological activity, and the presence of genes associated with metal resistance. Serratia marcescens CCMA 1010, that was previously isolated from coffee processing wastewater, was selected since was able to growth in Pb2+ concentrations of up to 4.0 mM. The growth rate and generation time did not differ from those of the control (without Pb2+), although biological activity decreased in the first hour of exposure to these ions and stabilized after this period. The presence of the zntR, zntA and pbrA genes was analysed, and only zntR was detected. The zntR gene encodes a protein responsible for regulating the production of ZntA, a transmembrane protein that facilitates Pb2+ extrusion out of the cell. S. marcescens CCMA 1010 demonstrated a potential for use as bioindicator that has potential to be used in bioremediation processes due to its resistance to high concentrations of Pb2+, ability to grow until 24 h of exposure, and possession of a gene that indicates the existence of mechanisms associated with resistance to lead (Pb2+).-
Idioma: dc.languageen-
Publicador: dc.publisherSpringer-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceWorld Journal of Microbiology and Biotechnology-
Palavras-chave: dc.subjectBacteria-
Palavras-chave: dc.subjectBioremediation-
Palavras-chave: dc.subjectContamination metals-
Palavras-chave: dc.subjectLead-
Palavras-chave: dc.subjectGene expression of metal resistance-
Título: dc.titleImpact of lead (Pb2+) on the growth and biological activity of serratia marcescens selected for wastewater treatment and identification of its zntR gene-a metal efflux regulator-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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