acinetobacter gerneri acinetobacter gerneri acinetobacter gerneri is a gram-negative, strictly aerobic bacterium from the genus acinetobacter which was isolated from activated sludge. acinetobacter gerneri scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: moraxellaceae genus: acinetobacter species: a. gerneri binomial name acinetobacter gernericarr et al. 2003