Figure 2.

Bar charts comparing the relative abundance of TM7 phylotypes per individual sample from the 4 proposed clades (A) OTUs recovered per sample. (B) Total reads obtained per sample from each subdivision. Environmental samples contained TM7 sequences from all 4 proposed clades with soil harboring the greatest number of phylotypes per sample analysed. OTUs from clades 2 and 4 were distributed widely, yet no reliable 16S rRNA gene sequences were present in the databases for these phylotypes. In most cases, a greater distribution and abundance of subdivision 3 OTUs was found in environmental samples.