Figure 1.

Evolutionary relationships of cyanobacteria. A schematic tree based on that presented by Strunecký et al., 2023 highlighting some of the key orders as proposed by the authors. BASAL (gray shading) denotes the early diversification events, and MICRO (pale blue shading) and MACRO (pale pink shading) denote microcyanobacteria and macrocyanobacteria, respectively, as described previously (Sánchez-Baracaldo, 2015; Boden et al., 2021). The colored circles represent the presence of strains with the capacity to produce Chl f, d, or b within the respective order. The green circle marks the most recent common ancestor (MRCA) of all cyanobacteria and the orange circle marks the MRCA of all organisms that have inherited a complete FaRLiP gene cluster assuming this has been inherited vertically since its formation. The tree recapitulates only branching orders, but branch lengths do not represent in this instance phylogenetic distance.