Phreatobacter oligotrophus Tóth et al. 2014 Phreatobacter oligotrophus Tóth et al. 2014 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Proteobacteria (sic) Garrity et al. 2021 Pseudomonadota corrig. Garrity et al. 2021 Alphaproteobacteriota (sic) Garrity et al. 2021 Alphaproteobacteria Garrity et al. 2006 Hyphomicrobiales Douglas 1957 (Approved Lists 1980) emend. Hördt et al. 2020 Phreatobacteraceae Hördt et al. 2020 Phreatobacter Tóth et al. 2014 emend. Lee et al. 2017 Phreatobacter oligotrophus Tóth et al. 2014 Phreatobacter Tóth et al. 2014 emend. Lee et al. 2017 Phreatobacter stygius Lee et al. 2017 Phreatobacter cathodiphilus Kim et al. 2018 Phreatobacter oligotrophus Tóth et al. 2014 Tóth E.M. Vengring A. Homonnay Z.G. Kéki Zs. Spröer C. Borsodi A.K. Márialigeti K. Schumann P. Phreatobacter oligotrophus gen. nov., sp. nov., an alphaproteobacterium isolated from ultrapure water of the water purification system of a power plant 2014 64 3 839 845 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.053843-0 24277862 Tóth E.M. Vengring A. Homonnay Z.G. Kéki Zs. Spröer C. Borsodi A.K. Márialigeti K. Schumann P. Phreatobacter oligotrophus gen. nov., sp. nov., an alphaproteobacterium isolated from ultrapure water of the water purification system of a power plant 2014 64 3 839 845 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.053843-0 24277862 Tóth E.M. Vengring A. Homonnay Z.G. Kéki Zs. Spröer C. Borsodi A.K. Márialigeti K. Schumann P. Phreatobacter oligotrophus gen. nov., sp. nov., an alphaproteobacterium isolated from ultrapure water of the water purification system of a power plant 2014 64 3 839 845 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.053843-0 24277862