Swimming marine Synechococcus strains with widely different photosynthetic pigment ratios form a monophyletic group.

ABSTRACT: Unicellular marine cyanobacteria are ubiquitous in both coastal and oligotrophic regimes. The contribution of these organisms to primary production and nutrient cycling is substantial on a global scale. Natural populations of marine Synechococcus strains include multiple genetic lineages, but the link, if any, between unique phenotypic traits and specific genetic groups is still not understood. We studied the genetic diversity (as determined by the DNA-dependent RNA polymerase rpoC1 gene sequence) of a set of marine Synechococcus isolates that are able to swim. Our results show that these isolates form a monophyletic group. This finding represents the first example of correspondence between a physiological trait and a phylogenetic group in marine Synechococcus. In contrast, the phycourobil

SUBMITTER: Toledo G 

PROVIDER: S-EPMC91712 | biostudies-literature | 1999 Dec

REPOSITORIES: biostudies-literature