835-Eco-evolutionary of cross-ecosystem colonization

Paper Talk · Apr 21, 2026 · 21m

Bacteria span Earth’s ecosystems, coupling ecological versatility with genome-architectural reconfiguration across shifting physicochemical conditions. Yet the genomic routes by which free-living lineages cross ecosystem boundaries, and the consequences for genome architecture, remain poorly understood. Here, we use comparative and evolutionary genomics to investigate a soil-to-sediment-to-freshwater transition in Limnocylindria, an abundant clade within the Chloroflexota phylum. Two sister families show contrasting strategies. CSP1-4 expands genomes through niche-specific gene acquisition…