The First Molecular Characterization of Picocyanobacteria from the Argentine Sea

Figure 3

Neighbor-joining phylogenetic trees based on 16S rRNA gene sequences. Bootstrap values were obtained through 1,000 repetitions. Similar tree topologies were observed by maximum parsimony analyses (not shown). (•) indicates a value >90% and (∘) indicates a value >60%. The freshwater strain Synechococcus sp. PCC 6301 was used as outgroup. Synechococcus clades are marked with roman numbers. Sequences from Synechococcus isolates from environmental samples and from DGGE bands are indicated with one, two, or three asterisks, respectively.