Transporter genes expressed by coastal bacterioplankton in response to dissolved organic carbon.

ABSTRACT: Coastal ocean bacterioplankton control the flow of dissolved organic carbon (DOC) from terrestrial and oceanic sources into the marine food web, and regulate the release of inorganic carbon to atmospheric and offshore reservoirs. While the fate of the chemically complex coastal DOC reservoir has long been recognized as a critical feature of the global carbon budget, it has been problematic to identify both the compounds that serve as major conduits for carbon flux and the roles of individual bacterioplankton taxa in mediating that flux. Here we analyse random libraries of expressed genes from a coastal bacterial community to identify sequences representing DOC-transporting proteins. Predicted substrates of expressed transporter genes indicated that carboxylic acids, compatible solutes, pol

SUBMITTER: Poretsky RS 

PROVIDER: S-EPMC2847192 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature