Acinetobacter pullorum sp. nov., Isolated from Chicken Meat
- Authors
- Elnar, Arxel G.; Kim, Min-Gon; Lee, Ju-Eun; Han, Rae-Hee; Yoon, Sung-Hee; Lee, Gi-Yong; Yang, Soo-Jin; Kim, Geun-Bae
- Issue Date
- Apr-2020
- Publisher
- 한국미생물·생명공학회
- Keywords
- Acinetobacter pullorum sp. nov.; chicken meat; taxonomy; antimicrobial resistance
- Citation
- Journal of Microbiology and Biotechnology, v.30, no.4, pp 526 - 532
- Pages
- 7
- Journal Title
- Journal of Microbiology and Biotechnology
- Volume
- 30
- Number
- 4
- Start Page
- 526
- End Page
- 532
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/42871
- DOI
- 10.4014/jmb.2002.02033
- ISSN
- 1017-7825
1738-8872
- Abstract
- A bacterial strain, designated B301T and isolated from raw chicken meat obtained from a local market in Korea, was characterized and identified using a polyphasic taxonomic approach. Cells were gram-negative, non-motile, obligate-aerobic coccobacilli that were catalase-positive and oxidase-negative. The optimum growth conditions were 30°C, pH 7.0, and 0% NaCl in tryptic soy broth. Colonies were round, convex, smooth, and cream-colored on tryptic soy agar. Strain B301T has a genome size of 3,102,684 bp, with 2,840 protein-coding genes and 102 RNA genes. The 16S rRNA gene analysis revealed that strain B301T belongs to the genus Acinetobacter and shares highest sequence similarity (97.12%) with A. celticus ANC 4603T and A. sichuanensis WCHAc060041T. The average nucleotide identity and digital DNA-DNA hybridization values for closely related species were below the cutoff values for species delineation (95–96% and 70%, respectively). The DNA G+C content of strain B301T was 37.0%. The major respiratory quinone was Q-9, and the cellular fatty acids were primarily summed feature 3 (C16:1 ω6c/C16:1 ω7c), C16:0, and C18:1 ω9c. The major polar lipids were phosphatidylethanolamine, diphosphatidyl-glycerol, phosphatidylglycerol, and phosphatidyl-serine. The antimicrobial resistance profile of strain B301T revealed the absence of antibiotic-resistance genes. Susceptibility to a wide range of antimicrobials, including imipenem, minocycline, ampicillin, and tetracycline, was also observed. The results of the phenotypic, chemotaxonomic, and phylogenetic analyses indicate that strain B301T represents a novel species of the genus Acinetobacter, for which the name Acinetobacter pullorum sp. nov. is proposed. The type strain is B301T (=KACC 21653T = JCM 33942T).
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