Diversity and evolution of pigment types in marine \textit{Synechococcus cyanobacteria

DNA integration and site-specific recombination, suggesting that their genomic variability relies D in part on a ‘tycheposon’-like mechanism. Comparison of the phylogenies obtained for PBS and E core genes revealed that the evolutionary history of PBS rod genes differs from the core T genome and is characterized by the co-existence of different alleles and frequent allelic P exchange. We propose a scenario for the evolution of the different pigment types and highlight E the importance of incomplete lineage sorting in maintaining a wide diversity of pigment types in C different Synechococcus lineages despite multiple speciation events.