Convergent evolution of intestinal lineages in the phylum Methanobacteriota (microbiomejournal.biomedcentral.com)

• 158 Methanobacteriota genomes compared
• Gut lineages show genome reduction and higher pseudogene counts
• Loss of nitrogen fixation in vertebrate-associated lineages
• Convergent evolution with bacterial gut mutualists

"Comparative genomic analysis of 158 Methanobacteriota species reveals that gut-associated lineages exhibit genome erosion, reduced biosynthetic capacity, and convergent adaptations to the nutrient-rich intestinal environment, mirroring patterns observed in bacteria."