Dynamic Regulation of Extracellular Superoxide Production by the Coccolithophore Emiliania huxleyi (CCMP 374).

ABSTRACT: In marine waters, ubiquitous reactive oxygen species (ROS) drive biogeochemical cycling of metals and carbon. Marine phytoplankton produce the ROS superoxide (O₂ ^-) extracellularly and can be a dominant source of O₂ ^- in natural aquatic systems. However, the cellular regulation, biological functioning, and broader ecological impacts of extracellular O₂ ^- production by marine phytoplankton remain mysterious. Here, we explored the regulation and potential roles of extracellular O₂ ^- production by a noncalcifying strain of the cosmopolitan coccolithophorid Emiliania huxleyi, a key species of marine phytoplankton that has not been examined for extracellular O₂ ^- production previ

SUBMITTER: Plummer S 

PROVIDER: S-EPMC6640029 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature