Figure 1.

Phylogenetic tree showing the position of Nitrosomonas sp. Is79 relative to the other described strains within the family. Nitrosomonas sp. AL212 is not a formally described strain, but was included because the whole genome of this strain became recently available [12]. The tree was constructed from 1,272 aligned characters of the 16S rRNA gene sequence under the maximum likelihood criterion and rooted in accordance with a current taxonomy using the software package MEGA [35]. Numbers adjacent to the branches are support values from 1,000 ML bootstrap replicates (left) and from 1,000 maximum parsimony bootstrap replicates (right) if larger than 60% [35]. Strains with whole genome sequencing projects registered in GOLD [36] are shown in red and the published in red-bold: Nitrosomonas europaea (AL954747), Nitrosomonas eutropha (CP000450), Nitrosospira multiformis (CP000103), Nitrosomonas sp. AL212 (CP002552) and Nitrosomonas sp. Is79 (CP02876).