pseudopontixanthobacter pseudopontixanthobacter pseudopontixanthobacter is a genus of gram-negative bacteria. pseudopontixanthobacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: erythrobacteraceae genus: pseudopontixanthobactersun et al. 2020 species pseudopontixanthobacter confluentis (park et al. 2016) liu et al. 2021 pseudopontixanthobacter sediminis (kim et al. 2016) liu et al. 2021 pseudopontixanthobacter vadosimaris sun et al. 2020