rhodoplanes serenus rhodoplanes serenus rhodoplanes serenus is a gram-negative, phototrophic, non-sulfur, motile bacterium from the genus of rhodoplanes which has been isolated from pond water from the sanshiro-ike pond near the university of tokyo in japan. rhodoplanes serenus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: nitrobacteraceae genus: rhodoplanes species: r. serenus binomial name rhodoplanes serenusrhodoplanes serenus okamura et al. 2009 type strain dsm 18633, nbrc 102049, ha17, tut3530