Molecular identification of iron oxidizing bacteria isolated from acid mine drainages in Peru

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3 Citas (Scopus)

Resumen

Acidophilic iron-oxidizing microorganisms are important in both environmental and biotechnological applications. These microorganisms are known to accelerate the dissolution of sulfur minerals such as pyrite (FeS2), leading to the acid mine drainage generation, a serious pollution problem, that makes these microorganisms essential to the commercial processing of minerals and sulfur. In order to answer this question, the diversity of native acidophilic bacterial species isolated from an acid mine drainage site in Peru was evaluated. The samples were collected from Yanacocha mining (3000 m.a.s.l.) located in the North of Cajamarca region, Yanamina mining (4440 m.a.s.l.) located in the middle of Huancavelica region; finally, SPCC mining (2000 m.a.s.l.) located in the South of Moquegua region. We isolated 11 strains from which three were identified as Acidithiobacillus ferrooxidans, two as At. ferrivorans, two as At. ferridurans, three as Leptospirillum ferrooxidans and one as Acidiphilium sp. by comparative sequencing of PCRamplified 16S rRNA genes. Phylogenetic analysis of the 16S rRNA genes revealed that some of the strains isolated are closely related to other already known, but there are some with similarities lower than 95 percent. Our results provide the first study on the diversity of iron-oxidizing bacteria isolated from acid mine drainage in Peru.

Idioma originalInglés
Título de la publicación alojadaIntegration of Scientific and Industrial Knowledge on Biohydrometallurgy
Páginas84-87
Número de páginas4
DOI
EstadoPublicada - 2013
Publicado de forma externa
Evento20th International Biohydrometallurgy Symposium, IBS 2013 - Antofagasta, Chile
Duración: 8 oct 201311 oct 2013

Serie de la publicación

NombreAdvanced Materials Research
Volumen825
ISSN (versión impresa)1022-6680

Conferencia

Conferencia20th International Biohydrometallurgy Symposium, IBS 2013
País/TerritorioChile
CiudadAntofagasta
Período8/10/1311/10/13

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