Figure 1.

Neighbor-joining tree indicating the phylogenetic relationships inferred from partial 16S rDNA gene sequences (1196 nt) of Pseudoalteromonas strains producing either alkaloids (green), polyketides (red), or peptides (blue). Empty circles represent strains producing unidentified antimicrobial compounds. Bootstrap values (expressed as percentage of 1000 replications) > 50% are shown at branching points. The proteobacteria Escherichia coli 2012K11 (position 167-1356) was used as outgroup. Bar, 0.01 substitutions per nucleotide.