Genome Evolution in Bacteria Isolated from Million-Year-Old Subseafloor Sediment.

Abstract excerpt

Beneath the seafloor, microbial life subsists in isolation from the surface world under persistent energy limitation. The nature and extent of genomic evolution in subseafloor microbes have been unknown. Here, we show that the genomes of Thalassospira bacterial populations cultured from million-year-old subseafloor sediments evolve in clonal populations by point mutation, with a relatively low rate of homologous...

Topics

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• Evolution, Molecular
• Genome, Bacterial
• Geologic Sediments
• Phylogeny
• Point Mutation