Phase-contrast photomicrograph of Methylorosula polaris sp. nov., illustrating the formation of rosettes. Bar, 1 micron. - Source:1Aerobic heterotroph
In pure culture Methylorosula are aerobic heterotrophs able to use a broad range of organic compounds such as sugars, polysaccharides, sugar alcohols and amino acids as carbon and energy sources 1. They are also facultative methylotrophs, which utilise C1-compounds, methanol and methylamines 1. The in situ physiology of Methylorosula has not been studied in activated sludge.
 Berestovskaya, Kotsyurbenko, Tourova, Kolganova, Doronina, Golyshin, et al. (2012): Methylorosula polaris gen. nov., sp. nov., an aerobic, facultatively methylotrophic psychrotolerant bacterium from tundra wetland soil. Int. J. Syst. Evol. Microbiol. 62 (Pt 3): 638-46. doi:10.1099/ijs.0.007005-0