Microbes found commonly in sediments that transform inorganic mercury into organic methylmercury as a by-product of their metabolism.
The term "sulfate-reducing bacteria" was found in the following pages:
Mercury contaminated freshwater fish from the NE United States: Where comes the mercury from ? | EVISA's News
Toxic Methylmercury-Producing Microbes More Widespread Than Realized | EVISA's News
Natural dissolved organic matter plays dual role in cycling of mercury | EVISA's News
Researchers found new sulfur-containing metabolites in the urine of rats exposed to arsenite | EVISA's News
Sulfur fuels the methylation of mercury | EVISA's News