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Acinetobacter pullorum sp. nov., Isolated from Chicken Meat
Arxel G Elnar1, Min-Gon Kim1, Ju-Eun Lee1
1Department of Animal Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea.
Journal of Microbiology and Biotechnology
|April 3, 2020
Summary
A novel bacterial species, Acinetobacter pullorum, was identified from raw chicken meat. This obligate-aerobic bacterium shows no antibiotic resistance, highlighting its unique characteristics.
Area of Science:
- Microbiology
- Bacterial Taxonomy
- Food Safety
Background:
- The genus Acinetobacter includes opportunistic pathogens and environmental bacteria.
- Accurate identification and characterization of novel bacterial species are crucial for understanding microbial diversity and potential risks.
Purpose of the Study:
- To characterize and identify a novel bacterial strain isolated from raw chicken meat.
- To determine the phylogenetic and taxonomic position of the novel strain within the Acinetobacter genus.
Main Methods:
- Polyphasic taxonomic approach including phenotypic, chemotaxonomic, and phylogenetic analyses.
- 16S rRNA gene sequencing, whole-genome sequencing, average nucleotide identity (ANI), and digital DNA-DNA hybridization (dDDH).
- Analysis of cellular fatty acids, polar lipids, and antimicrobial susceptibility.
Main Results:
- Strain B301T, isolated from raw chicken, is a Gram-negative, obligate-aerobic coccobacillus.
- Phylogenetic analysis indicated it belongs to the Acinetobacter genus, with 16S rRNA gene similarity below 97.12% to known species.
- ANI and dDDH values were below species delineation thresholds, supporting its novelty.
- The strain exhibited susceptibility to various antibiotics and lacked antibiotic resistance genes.
Conclusions:
- Strain B301T represents a novel species within the genus Acinetobacter.
- The proposed name for this new species is Acinetobacter pullorum sp. nov.
- This finding contributes to the understanding of bacterial diversity in food products and potential foodborne microorganisms.
