Sphingobium paulinellae sp. nov. and Sphingobium algicola sp. nov., isolated from a freshwater green alga Paulinella chromatophora Lee, Yunho and Jeon, Che Ok,, 67, 5165-5171 (2017), doi = https://doi.org/10.1099/ijsem.0.002435, publicationName = Microbiology Society, issn = 1466-5026, abstract= Two Gram-stain-negative, aerobic, catalase- and oxidase-positive, yellow-pigmented bacteria, designated strains Pch-BT and Pch-ET, were isolated from a green alga Paulinella chromatophora. Both strains were motile short rods with a flagellum and optimally grew at pH 6.0–7.0, 25–30 °C and 0–1 % NaCl. They contained ubiquinone-10 as the major quinone, spermidine as the major polyamine, C16 : 0, C14 : 0 2-OH and summed features 3 (comprising C16 : 1 ω7c and/or C16 : 1 ω6c) and 8 (comprising C18 : 1 ω7c and/or C18 : 1 ω6c) as the major fatty acids and diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidyl-N-methylethanolamine, two sphingoglycolipids and phosphatidylcholine as the major polar lipids. DNA G+C contents of strains Pch-BT and Pch-ET were 61.4 and 63.9 mol%, respectively. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strains Pch-BT and Pch-ET formed a phylogenic lineage with Sphingobium limneticum 301T. Strains Pch-BT and Pch-ET had a 99.86 % 16S rRNA gene sequence similarity and their DNA–DNA hybridization (DDH) relatedness value was 40.6 %. Strains Pch-BT and Pch-ET were most closely related to S. limneticum 301T with 99.93 and 99.76 % 16S rRNA gene sequence similarities, respectively and the DDH values between strains Pch-BT and Pch-ET and the type strain of S. limneticum were 43.3 and 32.1 %, respectively. In conclusion, strains Pch-BT and Pch-ET represent novel species of the genus Sphingobium , for which the names Sphingobium paulinellae sp. nov. and Sphingobium algicola sp. nov. are proposed, respectively. The type strains of S. paulinellae and S. algicola are Pch-BT (=KACC 19283T=JCM 32054T) and Pch-ET (=KACC 19284T=JCM 32055T), respectively., language=, type=