ArticleMicrobiology spectrum2026
Genome-based insights into metal co-resistance in Amazonian mercury-resistant bacteria: ecological lifestyle and biosafety implications for bioremediation.
Article in Microbiology spectrum, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Mercury (Hg) pollution from artisanal gold mining represents a serious environmental and public health problem, especially in the Amazon Basin. Although mercury-resistant bacteria provide significant detoxification potential, their deployment needs genomic screening to assess both ecological lifestyle and biosafety. In this study, we analyzed the genomes of two highly mercury-resistant strains, IMPORTANCE: Mercury pollution from artisanal gold mining poses a significant threat to ecosystems and human health worldwide, particularly in vulnerable regions like the Amazon. Robust mercury-resistant bacteria offer a sustainable solution for detoxifying contaminated environments, but their potential application requires careful genomic assessment to minimize biosafety risks. This study integrates comparative genomics, resistance profiling, and lifestyle prediction to evaluate two highly mercury-resistant bacterial isolates from mining sediments. We show that these strains harbor broad-spectrum mercury resistance genes with low antibiotic resistance burdens and lack key virulence markers, supporting their suitability as environmentally adapted candidates. By coupling metal detoxification potential with genomic screening, our work highlights a framework for identifying promising, high-performance candidates for bioremediation, advancing microbiological solutions to address metal pollution in impacted ecosystems.
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