Phylogeography of the thermophilic cyanobacterium Mastigocladus laminosus.

ABSTRACT: We have taken a phylogeographic approach to investigate the demographic and evolutionary processes that have shaped the geographic patterns of genetic diversity for a sample of isolates of the cosmopolitan thermophilic cyanobacterial Mastigocladus laminosus morphotype collected from throughout most of its range. Although M. laminosus is found in thermal areas throughout the world, our observation that populations are typically genetically differentiated on local geographic scales suggests the existence of dispersal barriers, a conclusion corroborated by evidence for genetic isolation by distance. Genealogies inferred using nitrogen metabolism gene sequence data suggest that a significant amount of the extant global diversity of M. laminosus can be traced back to a common ancestor associate

SUBMITTER: Miller SR 

PROVIDER: S-EPMC1951016 | biostudies-literature | 2007 Aug

REPOSITORIES: biostudies-literature