brevundimonas abyssalis brevundimonas abyssalis brevundimonas abyssalis is a gram-negative, alkali tolerant, psychrotolerant, aerobic, dimorphic prosthecate and heterotrophic bacterium from the genus of brevundimonas which has been isolated from deep-sea floor sediments from japan. brevundimonas abyssalis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: caulobacterales family: caulobacteraceae genus: brevundimonas species: b. abyssalis binomial name brevundimonas abyssalistsubouchi et al. 2013 type strain cect 8073, cip 110627, jcm 18150, tar-001 synonyms brevundimonas psychrophilus