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dc.contributor.author Anguita, JM
dc.contributor.author Rojas, C
dc.contributor.author Pastén, PA
dc.contributor.author Vargas, IT
dc.date.accessioned 2024-01-17T15:53:54Z
dc.date.available 2024-01-17T15:53:54Z
dc.date.issued 2018
dc.identifier.uri https://repositorio.uoh.cl/handle/611/276
dc.description.abstract Biological arsenic oxidation has been suggested as a key biogeochemical process that controls the mobilization and fate of this metalloid in aqueous environments. To the best of our knowledge, only four aerobic chemolithoautotrophic arsenite-oxidizing (CAO) bacteria have been shown to grow via direct arsenic oxidation and to have the essential genes for chemolithoautotrophic arsenite oxidation. In this study, a new CAO bacterium was isolated from a high Andean watershed evidencing natural dissolved arsenic attenuation. The bacterial isolate, designated TS-1, is closely related to the Ancylobacter genus, in the Alphaproteobacteria class. Results showed that TS-1 has genes for arsenite oxidation and carbon fixation. The dependence of bacterial growth from arsenite oxidation was demonstrated. In addition, a mathematical model was suggested and the kinetic parameters were obtained by simultaneously fitting the biomass growth, arsenite depletion curves, and arsenate production. This research increases the knowledge of chemolithoautotrophic arsenic oxidizing microorganisms and its potential role as a driver for natural arsenic attenuation.
dc.description.sponsorship FONDECYT project under the Centro de Desarrollo Urbano Sustentable (CEDEUS)
dc.relation.uri http://dx.doi.org/10.1007/s10532-017-9813-x
dc.subject Chemolithoautotrophic arsenite-oxidizing (CAO) bacteria
dc.subject Arsenic
dc.subject Biotransformation
dc.subject Biogeochemistry
dc.title A new aerobic chemolithoautotrophic arsenic oxidizing microorganism isolated from a high Andean watershed
dc.type Artículo
dc.identifier.doi 10.1007/s10532-017-9813-x
dc.citation.volume 29
dc.citation.issue 1
dc.identifier.orcid Vargas, Ignacio T/0000-0001-5974-2795
dc.identifier.orcid Rojas, Claudia/0000-0001-7727-2862
dc.identifier.orcid Pastén, Pablo A/0000-0002-9961-9342
dc.identifier.orcid Rojas Gonzales, Claudia/0000-0002-1559-2243
uoh.indizacion Web of Science

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