A Gram-stain-negative, aerobic and rod-shaped bacteria, designated ZY210820T, was isolated from the nasal cavity of a goat with respiratory disease in Yunnan Province, PR China. The strain grew at pH 6.0-9.0 (optimum pH 7.0), at 24-39 °C (optimum 37 °C) and with 0.5-2.0% (w/v) NaCl (optimum 1.0% NaCl). Phylogenetic analysis of 16S rRNA gene sequences showed that the strain formed a separated branch within the family Moraxellaceae with the highest similarity of 93.1% to Acinetobacter kanungonis JCM 34131T. Phylogenomic analysis of 327 single-copy protein sequences revealed that the strain belonged to the family Moraxellaceae and constituted a separated branch. The genomic G + C content was 35.5%. The highest orthologous average nucleotide identity (OrthoANI), digital DNA-DNA hybridization (dDDH), and average amino acid identity (AAI) values between the strain and the type strains in the family Moraxellaceae were 72.5% (Acinetobacter calcoaceticus DSM 30006T), 37.0% (Fluviicoccus keumensis JCM 19370T), and 64.0% (Acinetobacter kanungonis JCM 34131T), respectively. The predominant polar lipids were phosphatidylglycerol, phosphatidylethanolamine, cardiolipin, monolysocardiolipin, and diacylglycerol. The strain contained C12:0, C16:0, summed feature 3 (C16:1ω7c and/ or C16:1ω6c), C17:0, and C15:1ω6c as the major fatty acid (> 5%) and CoQ-9 as the major respiratory quinone. The results of the polyphasic analysis revealed that strain ZY210820T represents a novel species of a new genus in the family Moraxellaceae, and the name Nasibacterium caprae gen. nov., sp. nov. is proposed. The type strain is ZY210820T (= CCTCC AB 2021475T = NBRC 115474T).

Yunnan Tropical and Subtropical Animal Virus Diseases Laboratory Yunnan Animal Science and Veterinary Institute Kunming 650224 People's Republic of China

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