Yunchengibacter salinarum gen. nov., sp. nov., a novel bacterium of the family Kordiimonadaceae isolated from sediment in Yuncheng salt lake

Abstract

A Gram-stain negative, aerobic, motile and rod-shaped bacterium, light yellow to yellow bacterium, designated YC-2023-2 T , was isolated from sediment sample of Yuncheng salt lake. Growth occurred at 15–45 ℃ (optimum 37 ℃), pH 6.0–9.0 (optimum pH 7.0–8.0) and with 0–8.0% NaCl (w/v, optimum 2.0%). The phylogenetic analysis based on 16S rRNA gene showed that strain YC-2023-2T belonged to the family Kordiimonadaceae. The closely related members were Gimibacter soli 6D33T (92.38%), Kordiimonas lipolytica M41T (91.88%), Eilatimonas milleporae DSM 25217T (91.88%) and Kordiimonas gwangyangensis JCM 12864T (91.84%). The genome of strain YC-2023-2T was 2957513 bp, and the genomic DNA G + C content was 63.91%. The main respiratory quinone was Q-10 and the major fatty acids (> 10%) were iso-C15:0, C16:0, C19:0 ω8c cyclo, Summed Feature 8 (C18:1 ω6c or C18:1 ω7c) and Summed Feature 9 (iso-C17:1 ω9c or C16:0 10-methyl). The major polar lipids consisted of phosphatidylethanolamine (PE), diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), unidentified glycolipid (GL), unidentified lipid (L), and two unidentified aminolipids (AL). Based on the phylogenetic, phenotypic and chemotaxonomic characteristics, strain YC-2023-2T is proposed to represent a novel species of a novel genus named Yunchengibacter salinarum gen. nov., sp. nov., within the family Kordiimonadaceae. The type strain is YC-2023-2T (= GDMCC 1.4502T).