sp. nov., isolated from plateau pika ().

Two aerobic, Gram-stain-positive, catalase-positive, non-motile and rod-shaped bacterial strains, designated MF30-A and MF845, were isolated from the intestinal contents of plateau pika collected from the Qinghai-Tibet Plateau. Optimal growth of these two strains was observed under aerobic conditions at pH 7.0 and 28 °C. The 16S rRNA gene sequences of the isolates had highest similarities of 98.5 and 98.4 % to , respectively. In the 16S rRNA gene and polygenetic trees, strains MF30-A and MF845 were clearly distinct from other species. The two strains could not produce acid from arbutin, d-fructose, D-sucrose, glycogen, salicin or starch. Production of β-glucosidase by these strains was negative. The major fatty acids of these strains were anteiso-C, anteiso-C and iso-C. Strain MF30-A contained galactose, rhamnose and ribose as cell wall sugars and MK-12 and MK-11 as predominant menaquinones. The major polar lipids in strain MF30-A were diphosphatidylglycerol, phosphatidylglycerol and a glycolipid, while the peptidoglycan contained alanine, glutamic acid, glycine and 2,4-diaminobutyric acid. The G+C contents of the DNA of strains MF30-A and MF845 were 69.8 mol% and 69.7 mol%, respectively. The average nucleotide identity and digital DNA-DNA relatedness values of the two strains with all available genomes of the genus were far below the respective thresholds of 95 and 70 %, respectively. All genotypic and phenotypic data indicated that strains MF30-A and MF845 should be classified as novel members of the genus , for which the name sp. nov. is proposed. The type strain is MF30-A (=CGMCC 1.16469=DSM 106183).