Genomic taxonomy of the genus prochlorococcus.
The genus Prochlorococcus is globally abundant and dominates the total phytoplankton biomass and production in the
oceans. The genus is composed of two major clades, the Prochlorococcus marinus clade and the Prochlorococcus profundus clade. The two clades are further divided into several subclades, which are further divided into several sublineages. The sublineages are further divided into several sublineages