ArticleGenome biology2015
A novel method of consensus pan-chromosome assembly and large-scale comparative analysis reveal the highly flexible pan-genome of Acinetobacter baumannii.
Article in Genome biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 83 papers.
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83 citing papers in PubMed, 128 citations in OpenAlex.
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- Hybrid Genome and Clinical Impact of Emerging Extensively Drug-Resistant Priority Bacterial PathogenLife (Basel, Switzerland) · 2025Article
- Genomic insights into biofilm-associated virulence in extensively drug-resistantCurrent research in microbial sciences · 2025Article
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- Adjuvants restore colistin sensitivity in mouse models of highly colistin-resistant isolates, limiting bacterial proliferation and dissemination.Antimicrobial agents and chemotherapy · 2024Article
- Experimental evolution under different nutritional conditions changes the genomic architecture and virulence of Acinetobacter baumannii.Communications biology · 2024Article
- Epidemiological, Phylogenetic, and Resistance Heterogeneity AmongOpen forum infectious diseases · 2024Article
- Unveiling intraspecific diversity and evolutionary dynamics of the foodborne pathogenCurrent research in food science · 2024Article
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- Outpatient Clonal Propagation and Rapid Regional Establishment of an Emergent Carbapenem-Resistant Acinetobacter baumannnii Lineage Sequence Type 499Pas.The Journal of infectious diseases · 2023Article
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- Comparative Genome Analysis of 19Antibiotics (Basel, Switzerland) · 2022Article
23 more citing papers are in PubMed but not listed here.
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12 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundInfections by pan-drug resistant Acinetobacter baumannii plague military and civilian healthcare systems. Previous A. baumannii pan-genomic studies used modest sample sizes of low diversity and comparisons to a single reference genome, limiting our understanding of gene order and content. A consensus representation of multiple genomes will provide a better framework for comparison. A large-scale comparative study will identify genomic determinants associated with their diversity and adaptation as a successful pathogen.
resultsWe determine draft-level genomic sequence of 50 diverse military isolates and conduct the largest bacterial pan-genome analysis of 249 genomes. The pan-genome of A. baumannii is open when the input genomes are normalized for diversity with 1867 core proteins and a paralog-collapsed pan-genome size of 11,694 proteins. We developed a novel graph-based algorithm and use it to assemble the first consensus pan-chromosome, identifying both the order and orientation of core genes and flexible genomic regions. Comparative genome analyses demonstrate the existence of novel resistance islands and isolates with increased numbers of resistance island insertions over time, from single insertions in the 1950s to triple insertions in 2011. Gene clusters responsible for carbon utilization, siderophore production, and pilus assembly demonstrate frequent gain or loss among isolates.
conclusionsThe highly variable and dynamic nature of the A. baumannii genome may be the result of its success in rapidly adapting to both abiotic and biotic environments through the gain and loss of gene clusters controlling fitness. Importantly, some archaic adaptation mechanisms appear to have reemerged among recent isolates.
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