Fig 1. Consensus Bayesian inference tree showing phylogenetic relationships of representative sequences of 74 bacterial OTUs, and their classifications at the level of Class (classification bootstrap confidence in parenthesis).

The IDs of the OTUs are abbreviated by only keeping their unique, last five characters (e.g., HUSOE0I01A9P4E to A9P4E). The tree was inferred by combining these sequences with 274 16S rRNA sequences from [42], followed by dropping the latter sequences from the tree using the drop.tip function found in the R package “ape”. Thickened branches indicate posterior probabilities of 90% or higher; stars signify sequences that have classification-phylogeny incompatibility. See S1 Fig. for classifications of the OTUs at various taxonomic levels. See S2 Fig. for the full trees that include sequences from [42].