pseudomonas perolens pseudomonas perolens pseudomonas perolens is a gram-negative, non-sporulating, motile, rod bacterium that is known to cause mustiness in eggs in poland. the type strain is atcc 10757. pseudomonas perolens scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. perolens binomial name pseudomonas perolensszybalski 1950