Fig. 3

Matching assembled cyanophage with Synechococcus host using expression patterns. Presence and activity of the assembled cyanophage and its potential hosts in October 2012: a Mean coverage (after removing the top 25% most abundant contig positions) of the assembled cyanophage, b Amplicon single variants (ASVs) relative gene and transcript abundance of 16S-rRNA of the two most abundant cyanobacterial ASVs: Prochlorococcus ASV4 and Synechococcus ASV10. Note the near-absence of Prochlorococcus in POLA, in contrast to Synechococcus and the phage RNA, leading us to infer that the phage infected Synechococcus. Each group of bar plots, denoted by site name, represents data from a single sample