Figure 6
From: Life in an unusual intracellular niche: a bacterial symbiont infecting the nucleus of amoebae
Diversity and environmental distribution of ‘Candidatus Nucleicultrix amoebiphila’. Phylogenetic trees based on amplicon sequences (>300 nucleotides length, >95% sequence similarity to the Nucleicultrix 16S rRNA) are shown. As 16S rRNA sequences from amplicon-based studies generally cover only short regions of the full-length gene, separate trees comprising sequences spanning variable regions V1–V2, V4–V6 and V7–V8, respectively, were calculated. Each tree depicts a subset of representative sequences retrieved from public databases. With all three data sets, Nucleicultrix-related sequences group into two distinct clades (marked yellow and green in the outer circle). Colors in the inner circle represent the environmental origin of the sequences; triangles indicate full-length sequences; the position of Nucleicultrix is labeled with an asterisk. Bars indicate an estimated evolutionary distance of 0.01.
