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Plasmids as Key Players in Acinetobacter Adaptation
Olga Maslova1, Sofia Mindlin1, Alexey Beletsky2
1Institute of Molecular Genetics of National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
International Journal of Molecular Sciences
|September 23, 2022
Summary
Acinetobacter adaptability is driven by plasmids, which vary in structure and genes based on lifestyle. These plasmids, especially in modern strains, contain antibiotic resistance genes, aiding survival in diverse environments.
Area of Science:
- Microbiology
- Genomics
- Environmental Science
Background:
- Acinetobacter species are significant opportunistic pathogens.
- Understanding bacterial adaptability is crucial for clinical and environmental management.
- Genomic analysis provides insights into bacterial evolution and adaptation.
Purpose of the Study:
- To review the mechanisms of Acinetobacter adaptability.
- To compare genomes of free-living and clinical Acinetobacter strains.
- To elucidate the role of plasmids in bacterial adaptation.
Main Methods:
- Comparative genomic analysis of Acinetobacter strains (A. lwoffii, A. baumannii).
- Analysis of plasmid structure and gene content.
- Review of existing data on bacterial adaptability mechanisms.
Main Results:
- Plasmids play a critical role in Acinetobacter adaptability to diverse environments and clinical settings.
- Plasmid structure and gene composition vary significantly based on bacterial lifestyle.
- Modern Acinetobacter strains show enrichment of antibiotic resistance genes on plasmids.
- Genes for heavy metal and arsenic resistance are comparable across ancient and modern strains.
Conclusions:
- Acinetobacter plasmids are key determinants of bacterial survival under various stresses.
- Plasmid-mediated horizontal gene transfer contributes to Acinetobacter adaptability.
- Genomic plasticity of plasmids facilitates adaptation to environmental and clinical challenges.
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