Resource partitioning of phytoplankton metabolites that support bacterial heterotrophy.

ABSTRACT: The communities of bacteria that assemble around marine microphytoplankton are predictably dominated by Rhodobacterales, Flavobacteriales, and families within the Gammaproteobacteria. Yet whether this consistent ecological pattern reflects the result of resource-based niche partitioning or resource competition requires better knowledge of the metabolites linking microbial autotrophs and heterotrophs in the surface ocean. We characterized molecules targeted for uptake by three heterotrophic bacteria individually co-cultured with a marine diatom using two strategies that vetted the exometabolite pool for biological relevance by means of bacterial activity assays: expression of diagnostic genes and net drawdown of exometabolites, the latter detected with mass spectrometry and nuclear magnetic

SUBMITTER: Ferrer-Gonzalez FX 

PROVIDER: S-EPMC8027193 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature