Porphyrobacter Fuerst et al. 1993 emend. Coil et al. 2015 Porphyrobacter neustonensis Fuerst et al. 1993 emend. Hördt et al. 2020 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 Sphingomonadales Yabuuchi and Kosako 2006 emend. Hördt et al. 2020 Erythrobacteraceae Lee et al. 2005 emend. Hördt et al. 2020 Porphyrobacter Fuerst et al. 1993 emend. Coil et al. 2015 Erythrobacteraceae Lee et al. 2005 emend. Hördt et al. 2020 Croceicoccus Xu et al. 2009 emend. Xu et al. 2020 Erythromicrobium Yurkov et al. 1994 Erythrobacter Shiba and Simidu 1982 emend. Xu et al. 2020 Qipengyuania Feng et al. 2015 emend. Xu et al. 2020 Altererythrobacter Kwon et al. 2007 emend. Xu et al. 2020 Citrimicrobium Jung et al. 2014 Croceibacterium Liu et al. 2019 emend. Xu et al. 2020 Novosphingobium Takeuchi et al. 2001 Tsuneonella Xu et al. 2020 Alteriqipengyuania Xu et al. 2020 emend. Tareen et al. 2021 Parerythrobacter Xu et al. 2020 Pontixanthobacter Xu et al. 2020 emend. Liu et al. 2021 Alteripontixanthobacter Xu et al. 2020 Parapontixanthobacter Xu et al. 2020 Pelagerythrobacter Xu et al. 2020 Altericroceibacterium Xu et al. 2020 Alteraurantiacibacter Xu et al. 2020 Aurantiacibacter Xu et al. 2020 Paraurantiacibacter Xu et al. 2020 Pseudopontixanthobacter Sun et al. 2020 non Pseudopontixanthobacter Liu et al. 2021 Pseudopontixanthobacter Liu et al. 2021 non Pseudopontixanthobacter Sun et al. 2020 Allopontixanthobacter Liu et al. 2021 Actirhodobacter Xue et al. 2021 Porphyrobacter sanguineus (ex Ahrens and Rheinheimer 1967) Hiraishi et al. 2002 Porphyrobacter meromictius Rathgeber et al. 2007 Porphyrobacter mercurialis Coil et al. 2016 Porphyrobacter cryptus Rainey et al. 2003 emend. Hördt et al. 2020 Porphyrobacter colymbi Furuhata et al. 2013 Porphyrobacter dokdonensis Yoon et al. 2006 Porphyrobacter tepidarius Hanada et al. 1997 Porphyrobacter donghaensis Yoon et al. 2004 Porphyrobacter neustonensis Fuerst et al. 1993 emend. Hördt et al. 2020 Porphyrobacter algicida Kristyanto et al. 2017 Furuhata K. Edagawa A. Miyamoto H. Kawakami Y. Fukuyama M. Porphyrobacter colymbi sp. nov. isolated from swimming pool water in Tokyo, Japan 2013 59 245 250 The Journal of General and Applied Microbiology J Gen Appl Microbiol 0022-1260 1349-8037 10.2323/jgam.59.245 23863295 Hanada S. Kawase Y. Hiraishi A. Takaichi S. Matsuura K. Shimada K. Nagashima K.V. Porphyrobacter tepidarius sp. nov., a moderately thermophilic aerobic photosynthetic bacterium isolated from a hot spring. 1997 47 2 408 413 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-47-2-408 9103629 Hiraishi A. Yonemitsu Y. Matsushita M. Shin Y.K. Kuraishi H. Kawahara K. Characterization of Porphyrobacter sanguineus sp. nov., an aerobic bacteriochlorophyll-containing bacterium capable of degrading biphenyl and dibenzofuran 2002 178 45 52 Archives of Microbiology Arch Microbiol 0302-8933 1432-072X 10.1007/s00203-002-0423-5 12070768 Rainey F.A. Silva J. Nobre M.F. Silva M.T. da Costa M.S. Porphyrobacter cryptus sp. nov., a novel slightly thermophilic, aerobic, bacteriochlorophyll a-containing species. 2003 53 1 35 41 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.02308-0 12656149 Lee K.B. Liu C.T. Anzai Y. Kim H. Aono T. Oyaizu H. The hierarchical system of the 'Alphaproteobacteria': description of Hyphomonadaceae fam. nov., Xanthobacteraceae fam. nov. and Erythrobacteraceae fam. nov. 2005 55 5 1907 1919 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63663-0 16166687 Yoon J.H. Kang S.J. Lee M.H. 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