Fig. 5: Genomic relatedness, phylogeny, and evolution of polysaccharide catabolism in the Fervidibacteria.

a Average nucleotide identity (ANI) and average amino acid identity (AAI) among nomenclatural types for each Fervidibacteria species. The same color scheme used in a is used for taxa indicated with numbers. A full ANI and AAI matrix for all medium- and high-quality genomes is shown in Supplementary Data 18. b A maximum-likelihood phylogeny based on the concatenated, partitioned sequence alignment of 120 conserved bacterial marker sequences (bac120), with appropriate evolutionary models for each partition. Filled circles represent supported nodes at the species level and above based on >90% support from 1000 pseudoreplicates. Species are indicated with different colors, with species within the same genus indicated in different shades of the same color. Taxon names in bold and indicated with a star are the proposed nomenclatural types. Gray sequence IDs represent MAGs below quality standards for the SeqCode. c Phylogeny of Fervidibacteria species showing glycoside hydrolase data for each species based on the mean abundance of each category in high-quality genomes assigned to each species. The presence of terminal oxidase subunits for aerobic respiration and hydrogenases are shown in the matrix, with gene gain/loss events numbered. d Key of terminal oxidases and hydrogenases gained and lost; dashed circles show partial gains. Phylogenetic trees generated with different marker gene sets are shown in Supplementary Fig. 15 and an expanded ancestral state reconstruction is shown in Supplementary Fig. 19. Source data are provided as a Source Data file.