Cupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation

dc.creatorFerreira, Paulo Ademar Avelar
dc.creatorBomfeti, Cleide Aparecida
dc.creatorSoares, Cláudio Roberto Fonsêca de Souza
dc.creatorSoares, Bruno Lima
dc.creatorMoreira, Fatima Maria de Souza
dc.date2019-04-01T16:20:11Z
dc.date2019-04-01T16:20:11Z
dc.date2018-11
dc.date.accessioned2023-09-28T19:59:15Z
dc.date.available2023-09-28T19:59:15Z
dc.identifierFERREIRA, P. A. A. et al. Cupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation. Scientia Agricola, Piracicaba, v. 75, n. 6, p. 452-460, Nov./Dec. 2018.
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/33416
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9041715
dc.descriptionAmong soil microorganisms, the genus Cupriavidus has garnered particular scientific, economic and ecological interest because of its ability to fix nitrogen and tolerate high concentrations of metals. The aim of this study was to analyze four strains of Cupriavidus necator for their ability to tolerate and bioaccumulate cadmium and zinc. The tolerance of these strains to these metals was assessed in liquid culture medium containing different concentrations of Zn + Cd and in soil solutions and soils contaminated with multiple elements including Zn, Cd, Cu and Pb. The four strains showed high tolerance to Zn and Cd, both in culture medium and when inoculated into contaminated soil solutions or multi-element contaminated soil. The UFLA02-71 strain displayed the highest ability to bioaccumulate these metals. It was able to accumulate 93.76 µmol g cell−1 of Zn and 16.03 µmol g cell−1 of Cd when cultured in liquid medium with a total heavy metal concentration of 9,140 µmol L−1 (9,000 Zn + 140 Cd) and was able to accumulate 16.98 µmol g cell−1 of Cd in the soil solution. An increase in the pH of the culture medium resulting from the growth of the C. necator strains reduced the Zn2+ and Cd2+ ions in the medium and increased the concentrations of the ZnHPO4 and CdHPO4 species in solution. Thus, we concluded that they show great potential for use in the bioremediation of HM-contaminated areas.
dc.formatapplication/pdf
dc.languageen_US
dc.publisherEscola Superior de Agricultura "Luiz de Queiroz"
dc.rightsacesso aberto
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.sourceScientia Agricola
dc.subjectβ-proteobacteria
dc.subjectBioremediation
dc.subjectHeavy-metal
dc.subjectSoil pollution
dc.subjectβ-proteobactéria
dc.subjectBiorremediação
dc.subjectMetais pesados
dc.subjectPoluição do solo
dc.titleCupriavidus necator strains: zinc and cadmium tolerance and bioaccumulation
dc.typeArtigo


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