Fig. 4

Phage and cyanobacteria expression of the PS-II reaction center. Relative abundance of psbA of cyanobacteria (Synechococcus and Prochlorococcus), T4-like cyanophages, and T7-like cyanophages out of total psbA in a metagenomes and b metatranscriptomes. Each stacked bar chart represents a single sample