desulfovibrio vulgaris desulfovibrio vulgaris desulfovibrio vulgaris is a species of gram-negative sulfate-reducing bacteria in the desulfovibrionaceae family. desulfovibrio vulgaris is often used as a model organism for sulfur-reducing bacteria and was the first of such bacteria to have its genome sequenced. desulfovibrio vulgaris desulfovibrio vulgaris scientific classification domain: bacteria phylum: thermodesulfobacteriota class: desulfovibrionia order: desulfovibrionales family: desulfovibrionaceae genus: desulfovibrio species: d. vulgaris binomial name desulfovibrio vulgaris desulfovibrio vulgaris is ubiquitous in nature and has also been implicated in a variety of human bacterial infections, although it may only be an opportunistic pathogen.