Fig. 6: Environmental distribution and relative abundance of Acaudatibacter gen. nov. species with photoautotrophic potential.

a Overview of the genetic potential of Acaudatibacter species present in stratified freshwater bodies (based on Figs. 2b and 5b, Supplementary Figs. S8 and S16, and Supplementary Data 9). The genetic potential of C. crescentus is simply included as a point of reference. Question marks emphasize that, given their genome incompleteness (Supplementary Fig. S7a), the genome assemblies of Ac. sp. 23796 could lack photosynthetic potential due to the photosynthesis gene cluster not being assembled. T4P type IV pilus, cyt. cytochrome. b Geographical regions with stratified freshwater bodies containing putatively photoautotrophic Acaudatibacter species in metagenomes from Buck et al.⁶⁴ Numbers within square brackets denote the number of Acaudatibacter-containing freshwater bodies in the region (see Supplementary Fig. S22c). c Relative abundance of Acaudatibacter species among metagenomes sampled across the water column of stratified freshwater bodies. Dashed lines show O₂ concentrations measured during sampling. For each sampling series, the name of the freshwater body, geographical region (parentheses), lake code (italics), and sampling date are indicated. Colored circles represent geographical regions shown in (b). Additional Canadian freshwater bodies with Acaudatibacter presence, but lacking depth profiles, are presented in Supplementary Fig. S24. Source data are provided as a Source Data file.