pontixanthobacter pontixanthobacter pontixanthobacter is a genus of gram-negative bacteria. pontixanthobacter scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: erythrobacteraceae genus: pontixanthobacterxu et al. 2020 species pontixanthobacter aestiaquae (jung et al. 2014) xu et al. 2020 pontixanthobacter aquaemixtae (park et al. 2017) xu et al. 2020 pontixanthobacter gangjinensis (jeong et al. 2013) xu et al. 2020 pontixanthobacter luteolus (yoon et al. 2005) xu et al. 2020 pontixanthobacter rizhaonensis liu et al. 2021