Fig. S5.

Phylogenetic distribution of N cycling pathways in the soil metagenomes. Same as Fig. 4 including genus labels. The neighbor-joining tree was constructed using 16S rRNA data (Materials and Methods) and includes all archaeal and bacterial genera associated with N cycling reads in the dataset. The outer circle plots the proportion of N cycle reads assigned to each pathway within the genus. The ammonia assimilation pathway is excluded, because it was found in all genera represented by at least 10 sequences. The inner circle indicates major classes and phyla.