TY - JOUR
T1 - The bioleaching potential of a bacterial consortium
AU - Latorre, Mauricio
AU - Cortés, María Paz
AU - Travisany, Dante
AU - Di Genova, Alex
AU - Budinich, Marko
AU - Reyes-Jara, Angélica
AU - Hödar, Christian
AU - González, Mauricio
AU - Parada, Pilar
AU - Bobadilla-Fazzini, Roberto A.
AU - Cambiazo, Verónica
AU - Maass, Alejandro
N1 - Publisher Copyright:
© 2016
PY - 2016/10/1
Y1 - 2016/10/1
N2 - This work presents the molecular foundation of a consortium of five efficient bacteria strains isolated from copper mines currently used in state of the art industrial-scale biotechnology. The strains Acidithiobacillus thiooxidans Licanantay, Acidiphilium multivorum Yenapatur, Leptospirillum ferriphilum Pañiwe, Acidithiobacillus ferrooxidans Wenelen and Sulfobacillus thermosulfidooxidans Cutipay were selected for genome sequencing based on metal tolerance, oxidation activity and bioleaching of copper efficiency. An integrated model of metabolic pathways representing the bioleaching capability of this consortium was generated. Results revealed that greater efficiency in copper recovery may be explained by the higher functional potential of L. ferriphilum Pañiwe and At. thiooxidans Licanantay to oxidize iron and reduced inorganic sulfur compounds. The consortium had a greater capacity to resist copper, arsenic and chloride ion compared to previously described biomining strains. Specialization and particular components in these bacteria provided the consortium a greater ability to bioleach copper sulfide ores.
AB - This work presents the molecular foundation of a consortium of five efficient bacteria strains isolated from copper mines currently used in state of the art industrial-scale biotechnology. The strains Acidithiobacillus thiooxidans Licanantay, Acidiphilium multivorum Yenapatur, Leptospirillum ferriphilum Pañiwe, Acidithiobacillus ferrooxidans Wenelen and Sulfobacillus thermosulfidooxidans Cutipay were selected for genome sequencing based on metal tolerance, oxidation activity and bioleaching of copper efficiency. An integrated model of metabolic pathways representing the bioleaching capability of this consortium was generated. Results revealed that greater efficiency in copper recovery may be explained by the higher functional potential of L. ferriphilum Pañiwe and At. thiooxidans Licanantay to oxidize iron and reduced inorganic sulfur compounds. The consortium had a greater capacity to resist copper, arsenic and chloride ion compared to previously described biomining strains. Specialization and particular components in these bacteria provided the consortium a greater ability to bioleach copper sulfide ores.
KW - Bacterial consortium
KW - Bioleaching
KW - Metabolic pathways
KW - Metal resistance
UR - http://www.scopus.com/inward/record.url?scp=84989891384&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2016.07.012
DO - 10.1016/j.biortech.2016.07.012
M3 - Article
C2 - 27416516
AN - SCOPUS:84989891384
SN - 0960-8524
VL - 218
SP - 659
EP - 666
JO - Bioresource Technology
JF - Bioresource Technology
ER -