Metagenome-scale analysis yields insights into the structure and function of microbial communities in a copper bioleaching heap

BMC Genetics
Xian ZhangHuaqun Yin

Abstract

Metagenomics allows us to acquire the potential resources from both cultivatable and uncultivable microorganisms in the environment. Here, shotgun metagenome sequencing was used to investigate microbial communities from the surface layer of low grade copper tailings that were industrially bioleached at the Dexing Copper Mine, China. A bioinformatics analysis was further performed to elucidate structural and functional properties of the microbial communities in a copper bioleaching heap. Taxonomic analysis revealed unexpectedly high microbial biodiversity of this extremely acidic environment, as most sequences were phylogenetically assigned to Proteobacteria, while Euryarchaeota-related sequences occupied little proportion in this system, assuming that Archaea probably played little role in the bioleaching systems. At the genus level, the microbial community in mineral surface-layer was dominated by the sulfur- and iron-oxidizing acidophiles such as Acidithiobacillus-like populations, most of which were A. ferrivorans-like and A. ferrooxidans-like groups. In addition, Caudovirales were the dominant viral type observed in this extremely environment. Functional analysis illustrated that the principal participants related to the ke...Continue Reading

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Methods Mentioned

BETA
environmental stresses

Software Mentioned

MetaGeneAnnotator
MG
HIT
NGS QC Toolkit
MEGAN
CD
MetaVelvet
SOAPdenovo
EST
RAST

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