Figure 1.

Phylogenetic tree highlighting the position of L. alexandrii relative to the type strains of the species of selected genera (see [1,3] and the results of the Greengenes database search described above) within the family Rhodobacteraceae. These genera form a clade [1,3], but it might be better not to place them in this family [3]. The tree was inferred from 1,366 aligned characters [8,9] of the 16S rRNA gene sequence under the maximum likelihood (ML) criterion [10] and rooted with Pseudovibrio. The branches are scaled in terms of the expected number of substitutions per site (see size bar). Numbers adjacent to the branches are support values from 1,000 ML bootstrap replicates [11] (left) and from 1,000 maximum-parsimony bootstrap replicates [12] (right) if larger than 60%. Lineages with type-strain genome sequencing projects registered in GOLD [13] are labeled with one asterisk.