Plastome evolution in annual Brachypodium species reveals widespread heteroplasmy and chloroplast capture, lineage-specific codon usage bias, and low positive selection.

Abstract excerpt

BACKGROUND: Comparative genomics and plastome phylogenomics have advanced significantly in recent years, highlighting the diversity, possible admixture, and non-neutral evolution of the predominantly considered non-recombinant chloroplast genomes in angiosperms. The grass genus Brachypodium serves as a powerful model for studying evolutionary processes in monocots. RESULTS: We analyzed 287 plastomes across the...

Topics

• Brachypodium
• Evolution, Molecular
• Phylogeny
• Selection, Genetic
• Genome, Chloroplast
• Codon Usage
• Chloroplasts
• Genetic Variation