pseudomonas grimontii pseudomonas grimontii pseudomonas grimontii is a gram-negative, rod-shaped, fluorescent, motile bacterium isolated from natural springs in france. the type strain is cip 106645. pseudomonas grimontii scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pseudomonadales family: pseudomonadaceae genus: pseudomonas species: p. grimontii binomial name pseudomonas grimontiibaïda, et al. 2002