pseudomonas alcaligenes pseudomonas alcaligenes pseudomonas alcaligenes is a gram-negative aerobic bacterium used for bioremediation purposes of oil pollution, pesticide substances, and certain chemical substances, as it can degrade polycyclic aromatic hydrocarbons. it can be a human pathogen, but occurrences are very rare. based on 16s rrna analysis, p. alcaligenes has been placed in the p. aeruginosa group. pseudomonas alcaligenes scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. alcaligenes binomial name pseudomonas alcaligenesmonias 1928 type strain atcc 14909 ccug 1425 a cfbp 2437 cip 101034 dsm 50342 jcm 5967 lmg 1224 nbrc 14159 nccb 76044 nctc 10367 vkm b-2171