Scientific Name Ostreococcus lucimarinus
Common Name Green alga
Taxonomy ID 242159
Lineage cellular organisms > Viridiplantae > Chlorophyta > prasinophytes > Mamiellophyceae > Mamiellales > Bathycoccaceae > Ostreococcus
External Links NCBI; EBI; JGI; PLAZA;
Representative Assembly Olucimarinus_231_v2.0 GCF_000092065.1 DNA GFF RNA Protein

Ostreococcus is a genus of unicellular coccoid or spherically shaped green alga belonging to the class Mamiellophyceae. It includes prominent members of the global picoplankton community, which plays a central role in the oceanic carbon cycle. Ostreococcus is one of the smallest known eukaryotic organisms, about 1 micron in size. It is a Prasinophyte and thus part of the "green" chloroplast lineage that includes land plants. It is found in diverse marine environments. O. lucimarinus is adapted to high light intensities. It is found in the upper, illuminated water column of the ocean. It is unicellular consisting of a single chloroplast and mitochondria. It lacks flagella. JGI has sequenced the genome of O. lucimarinus.