sp. nov., sp. nov. and sp. nov., isolated from soil of the Qinghai-Tibet Plateau.

Six novel bacterial strains, designated N016, N017, N022, N028, N056, and N064, were isolated from soil sampled on the Qinghai-Tibet Plateau. Cells were aerobic, orange or yellow, globular or rod-shaped, non-motile, non-spore-forming, Gram-stain-positive, catalase-positive and oxidase-negative. All the isolates were salt-tolerant and could grow in the range of 4-42 °C. Results of phylogenomic analyses based on 16S rRNA gene sequences and core genomic genes showed that the three pairs of strains (N016/N017, N022/N028, and N056/N064) were closely related to the members of the genus , and clustered with , , and . The digital DNA-DNA hybridization and average nucleotide identity values of the six novel strains with other members of the genus were within the ranges of 18.7-53 % and 70.58-93.49 %, respectively, all below the respective recommended thresholds of 70.0 % and 95-96 %. The genomic DNA G+C content of the six strains ranged from 43.5 to 46.0 mol%. The major fatty acids of the six strains were -C, -C, and C 7 alcohol. The predominant polar lipids of strains N016, N022, and N056 were diphosphatidylglycerol, phosphatidylglycerol, and phosphatidylethanolamine. Menaquinones 7 and 8 were the respiratory quinones. The results of the above analyses indicated that the six strains represent three novel species of the genus , for which the names sp. nov. (type strain N016=GDMCC 1.4062=JCM 36224), sp. nov. (type strain N022=GDMCC 1.4063=JCM 36225), and sp. nov. (type strain N056=GDMCC 1.4064=JCM 36226) are proposed.