FIG. 1.
Neighbor-joining distance tree created from 46 nearly complete (1,449 nucleotides) Salinispora 16S rRNA gene sequences. The three major Salinispora phylotypes, consisting of the two formally described species S. tropica and S. arenicola and the proposed species “S. pacifica,” are clearly delineated. Species names are followed by strain number, source (BA, Bahamas; RS, Red Sea; GU, Guam; PA, Palau; USVI, U.S. Virgin Islands; SC, Sea of Cortez), year of collection (89 = 1989, etc.), and accession number (for representative sequences). *, produces compound 6; **, produces cyclomarin A (compound 7). P. propionicus and B. aggregatus were used as outgroups.