actinobacillus succinogenes actinobacillus succinogenes actinobacillus succinogenes is a bacterium. it is a succinic acid-producing strain first isolated from the bovine rumen. it is a facultatively anaerobic, pleomorphic, gram-negative rod. its type strain is atcc 55618t. actinobacillus succinogenes scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: actinobacillus species: a. succinogenes binomial name actinobacillus succinogenesguettler et al. 1999