Divergence in Gene Regulation Contributes to Sympatric Speciation of Shewanella baltica Strains.

ABSTRACT: Niche partitioning and sequence evolution drive genomic and phenotypic divergence, which ultimately leads to bacterial diversification. This study investigated the genomic composition of two Shewanella baltica clades previously identified through multilocus sequencing typing and recovered from the redox transition zone in the central Baltic Sea. Comparative genomic analysis revealed significantly higher interclade than intraclade genomic dissimilarity and that a subset of genes present in clade A were associated with potential adaptation to respiration of sulfur compounds present in the redox transition zone. The transcriptomic divergence between two representative strains of clades A and D, OS185 and OS195, was also characterized and revealed marked regulatory differences. We found

SUBMITTER: Deng J 

PROVIDER: S-EPMC5795076 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature