ArticlemSystems2026
Dynamic reworking of marine diatom endometabolomes in response to temperature and a model bacterium.
Article in mSystems, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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8 authors.
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Abstract
A large annual carbon flux occurs through the surface ocean's labile dissolved organic carbon (DOC) pool, with influx dominated by phytoplankton-derived metabolites and outflux by heterotrophic bacterioplankton uptake. We addressed the dynamics of this carbon flow between microbial primary and secondary producers through analysis of the IMPORTANCE: The role of labile DOC in the transfer of marine carbon between phytoplankton and heterotrophic bacteria was first recognized 40 years ago, yet the identity and dynamics of phytoplankton metabolites entering the labile DOC pool are still poorly known. Using metabolome and transcriptome profiling, we found highly variable composition and concentration of diatom endometabolites, depending on growth conditions and arising over time frames as short as a single growth cycle. This strong response to external conditions, both biotic and abiotic, suggests that the chemical composition of phytoplankton intracellular pools released during lysis shift with ocean conditions. As phytoplankton cell lysis is one of the largest sources of labile dissolved compounds in the ocean, dynamic compositional changes in the metabolites released to heterotrophic bacteria have implications for the fate of surface ocean carbon.
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