syntrophus aciditrophicus syntrophus aciditrophicus syntrophus aciditrophicus is a gram-negative and rod-shaped bacterium. it is non-motile, non-spore-forming and grows under strictly anaerobic conditions, thus an obligate anaerobe. it degrades fatty acids and benzoate in syntrophic association with hydrogen-using microorganisms. its genome was published in 2007. syntrophus aciditrophicus scientific classification domain: bacteria phylum: thermodesulfobacteriota class: syntrophia order: syntrophales family: syntrophaceae genus: syntrophus species: s. aciditrophicus binomial name syntrophus aciditrophicusjackson et al. 2001