Microbial community structure in aquifers associated with arsenic: analysis of 16S rRNA and arsenite oxidase genes.

The microbiomes of deep and shallow aquifers located in an agricultural area, impacted by an old tin mine, were explored to understand spatial variation in microbial community structures and identify environmental factors influencing microbial distribution patterns through the analysis of 16S rRNA and genes. Although , , , , , and were widespread across the analyzed aquifers, the dominant taxa found in each aquifer were unique. The co-dominance of and potentially controlled arsenic immobilization in the aquifers.