Elioraea thermophila sp. nov., a thermophilic bacterium from hot spring of the class Alphaproteobacteria, emended description of the genus Elioraea and proposal of Elioraeaceae fam. nov

A Gram-staining-negative, aerobic, curved rod-shaped and thermophilic bacterial strain, designated YIM 72297 , was isolated from a sediment sample collected from a hot spring in Tengchong county, Yunnan province, south-west China. Growth was observed at pH 5.0-9.0 with an optimum of pH 7.0-7.5, and at 45-60 °C with an optimum of 55 °C. Positive for catalase and oxidase. The 16S rRNA gene sequence comparison indicated that strain YIM 72297 was most closely related to DSM 17972 (96.9 %) and showed 5 %) were summed C (35.8 %), summed feature 8 (30.1 %), C (12.6 %), C 2OH (5.6 %) and C 2OH (5.4 %). The polar lipids consisted of phosphatidylcholine, phosphatidylethanolamine, diphosphosphatidylglycerol and phosphatidylglycerol in addition to two unidentified aminolipids. The DNA G+C content of YIM 72297 was 70.8 mol% (draft genome). On the basis of the polyphasic taxonomic evidence presented in this study, strain YIM 72297 should be classified as representing a novel species of the genus , for which the name sp. nov. is proposed, with the type strain YIM 72297 (=CCTCC AB 2017169 =KCTC 62323 ). In addition, a novel family, fam. nov., is proposed to accommodate the genus .