Desulfobacterales

Desulfobacterales are an order of sulfate-reducing bacteria within the phylum Thermodesulfobacteria. The bacteria in this order are strict anaerobic respirators, using sulfate or nitrate as the terminal electron acceptor instead of oxygen. Desulfobacterales can degrade ethanol, molecular hydrogen, organic acids, and small hydrocarbons. They have a wide ecological range and play important environmental roles in symbiotic relationships and nutrient cycling.

Desulfobacter is a genus of bacteria from the family Desulfobacteraceae. Desulfobacter has the ability to oxidize acetate to .

Desulfococcus is a Gram-negative, anaerobic and motile bacteria genus from the family Desulfococcaceae.

The Desulfobulbaceae are a family of Thermodesulfobacteriota. They reduce sulphates to sulphides to obtain energy and are anaerobic.

Desulfonema is a Gram-negative bacteria genus from the family Desulfococcaceae.

The Desulfobacteraceae are a family of Thermodesulfobacteriota. They reduce sulfates to sulfides to obtain energy and are strictly anaerobic. They have a respiratory and fermentative type of metabolism. Some species are chemolithotrophic and use inorganic materials to obtain energy and use hydrogen as their electron donor.