rhodoluna rhodoluna rhodoluna is a gram-positive, non-spore-forming and non-motile genus of bacteria from the family of microbacteriaceae. the type strain of the only species rhodoluna lacicola encodes an actinorhodopsin, which is a light-diven proton pump enabling light energy conversion, potentially resulting in a mixotrophic physiology. the type strain of r. lacicola was isolated from lake tai (lake taihu) in china. the type strain mwh-ta8 is remarkable for its very small cell size ultramicrobacterium and its small genome size of only 1.4 mbp. the type strain has a planktonic lifestyle, that is freely floating the water column of aquatic systems. currently, the genus rhodoluna contains two described species (r. lacicola and r. limnophila). rhodoluna scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: rhodolunahahn et al. 2014 type species rhodoluna lacicolahahn et al. 2014 species r. lacicola hahn et al. 2014 r. limnophila pitt et al. 2019