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Keywords:

  • Phototrophic bacteria;
  • Volatile organic sulfur;
  • Volatile organic selenium;
  • Dimethylsulfide

Abstract Species of phototrophic non-sulfur bacteria produce methylated sulfur compounds, such as dimethylsulfide and dimethyldisulfide. In the presence of selenium oxyanions, analogous organicselenium compounds are formed. These findings suggest that this group of bacteria contribute to the volatilization and biogechemical cycling of sulfur and selenium.