Figure 1.

Phylogenetic tree highlighting the position of S. smaragdinae SEBR 4228^T relative to the type strains of the other species within the genus and of the other genera within the genus Spirochaeta. The tree was inferred from 1,385 aligned characters [7,8] of the 16S rRNA gene sequence under the maximum likelihood criterion [9] and rooted in accordance with the current taxonomy [10]. The branches are scaled in terms of the expected number of substitutions per site. Numbers above branches are support values from 500 bootstrap replicates [11] if larger than 60%. Lineages with type strain genome sequencing projects registered in GOLD [12] are shown in blue, published genomes in bold.