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Following the Dynamics of Structural Variants in Experimentally Evolved Populations
Published on: February 3, 2023
Genomic and systems evolution in Vibrionaceae species
Jianying Gu1, Jennifer Neary, Hong Cai
1Department of Biology, College of Staten Island, City University of New York, Staten Island, NY 10314, USA. guj@mail.csi.cuny.edu
BMC Genomics
|July 15, 2009
Summary
Lineage-specific expansions (LSEs) reveal genome plasticity in Vibrionaceae bacteria. These gene duplications drive bacterial evolution, adaptation, and pathogenesis in diverse aquatic environments.
Area of Science:
- Microbial genomics
- Evolutionary biology
- Bacterial genetics
Background:
- Prokaryotic genome studies accelerate evolution research.
- Vibrionaceae bacteria, abundant in aquatic environments, exhibit diverse lifestyles (free-living, symbiotic, pathogenic).
- Gene duplication and lateral gene transfer drive bacterial evolution, leading to lineage-specific expansions (LSEs).
Purpose of the Study:
- To compare genomes of eleven diverse Vibrionaceae strains.
- To investigate the distribution and patterns of lineage-specific expansions (LSEs).
- To identify genes involved in adaptation and pathogenesis within Vibrionaceae.
Main Methods:
- Comparative genomics of eleven Vibrionaceae strains.
- Analysis of core genome composition.
- Identification and characterization of lineage-specific expansions (LSEs).
Main Results:
- The core genome shared by eleven Vibrionaceae strains comprises 1,882 genes (31%-50% of the genome).
- Lineage-specific expansions (LSEs) constitute 1-11% of the genomes, occurring as single gene or block expansions.
- LSEs involve genes related to defense, pathogenesis, and fundamental life cycle processes.
Conclusions:
- Vibrionaceae exhibit significant genome plasticity and rapid evolution.
- LSEs provide insights into genomic variation and lineage-specific adaptations.
- Enhanced genetic variability in LSEs may drive adaptation to environmental and host challenges.
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