Ornithinicoccus soli sp. nov., isolated from farmland soil

A Gram-stain-positive, aerobic, non-motile and coccoid-shaped bacterium, designated XNB-1^T, was isolated from farmland soil in Taian, Shandong province, China. Strain XNB-1^T contained iso-C_15 : 0 and iso-C_16 : 0 as the predominant fatty acids. The diagnostic diamino acid of the peptidoglycan was ornithine, and the interpeptide bridge was l-Orn←Gly_{(1, 2)}←d-Glu. The polar lipid profile of strain XNB-1^T consisted of diphosphatidylglycerol, phosphatidylglycerol, an unidentified phosphoglycolipid and three unidentified phospholipids. The predominant menaquinone of strain XNB-1^T was MK-8(H₄) and the DNA G+C content was 70.1 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain XNB-1^T belonged to the genus Ornithinicoccus, and shared the highest similarity with Ornithinicoccus hortensis HKI 0125^T (96.0 %), followed by Ornithinicoccus halotolerans EGI 80423^T (95.5 %). Genome-based analysis of average nucleotide identity of strain XNB-1^T with O. hortensis HKI 0125^T and O. halotolerans EGI 80423^T yielded values of 73.1 and 73.3 %, respectively, while the digital DNA-DNA hybridization values were 19.5 and 19.9 %, respectively. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain XNB-1^T is considered to represent a novel species of the genus Ornithinicoccus, for which the name Ornithinicoccus soli sp. nov. is proposed. The type strain is XNB-1^T (=CCTCC AB 2019099^T=KCTC 49259^T).