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Maximum-likelihood phylogenetic tree of 16S rRNA gene sequences representing Synechococcus sp. SynAce01, 46 cyanobacteria reference strains, and an outgroup strain—Gloeobacter violaceus. Bootstrap values >50% (1000 nonparametric replications) are indicated at nodes. Scale bar = 5% substitutions per site. For taxonomic, temperature, and habitat characteristics of these picocyanobacteria please consult Table S4.
