Figure 4

Biogeographic patterns among Salinispora spacers and prophages. A) Distribution of spacers unique to certain locations (SC = Sea of Cortez, HW = Hawaii, FJ = Fiji, PY = Palmyra, BH = Bahamas, PA = Palau) and biomes; B) Location-specific spacer variants reflected in single nucleotide polymorphisms (marked in red) within a conserved 41 nt spacer in strains from Hawaii (3 strains with 3 variants), Fiji (4 strains with 1 variant) and Palau (1 strains with 1 variant); C) Maximum likelihood phylogeny (1000 bootstrap replicates) of SV1-related prophages in genomes from geographically distant Salinispora strains, showing location-specific SV1 lineages.