title: Constant release of photosynthate from marine phytoplankton.
abstract: The release rate of dissolved organic carbon (DOC) by unialgal cultures and natural phytoplankton assemblages was constant over a wide range of dissolved inorganic carbon concentrations. DOC release was not proportional to the particulate organic carbon production rate. We postulate that intracellular DOC, fated for release, exists either as a separate pool from that leading to particulate organic carbon production or that there is active metabolic control on one portion of a common pool.
mesh_terms: D000818:Animals; D002244:Carbon / Q000378:metabolism*; D002708:Chlorella / Q000378:metabolism; D004141:Dinoflagellida / Q000378:metabolism; D056890:Eukaryota / Q000378:metabolism; D010788:Photosynthesis; D010839:Phytoplankton / Q000378:metabolism*; D010933:Plankton / Q000378:metabolism*; D012623:Seawater; D014871:Water Microbiology
chemical_list: D002244:Carbon