Fig. 4

Phylogeny of two potential THF-auxotrophs and their genome coverage correlations with CPR MAGs. A The Maximum-likelihood phylogenomic tree of Ca. UBA665 bin24 and the reference genomes of order Thermodesulfovibrionales from the GTDB database (R220, n = 226). The genomes of the family Dissulfurispiraceae were highlighted with a purple background. B The Maximum-likelihood phylogenomic tree of Ca. HRBIN32 bin14 with all the genomes affiliated to phylum CSP1-3 from the GTDB database (R220, n = 44). The genomes of different families were shown with the background in different colors. C The linear relationship of genome coverages between three CPR genomes and their predicted hosts with significant Pearson correlation