roseomonas terricola roseomonas terricola roseomonas terricola is a species of gram negative, strictly aerobic, coccobacilli-shaped, pink-pigmented bacterium. it was first isolated from soil from farmland located in yesan-gun in south korea and the species was first proposed in 2017. roseomonas terricola scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodospirillales family: acetobacteraceae genus: roseomonas species: r. terricola binomial name roseomonas terricolalee 2017 the optimum growth temperature for r. terricola is 35 °c, but can grow in the 15-40 °c range. the optimum ph is 7.0 and can grow at ph 6.0-9.0.