FIGURE 2.

Neighbor-joining phylogenetic tree of 97% similarity clustered non-Eukaryota sequences in 16S rRNA gene clone libraries from photosynthetic picoeukaryote cell sorts (P1, 1,000 cells) and their closest relatives. GenBank accession numbers are written in square brackets for the closest relatives and in bold for the representative clones. Colored circles indicate the number of sequences in each cluster and the corresponding date for each clone. Bootstrap values >50% (1,000 replicates) are indicated next to the node.