[Photo from Chrétiennot-Dinet, M.-J., Courties, C., Vaquer, A., Neveux, J., Claustre, H., Lautier, J. & Machado, M.C. (1995).
A new marine picoeucaryote: Ostreococcus tauri gen. et sp. nov. (Chlorophyta, Prasinophyceae). Phycologia 34: 285-292]
Ostreococcus tauri (AlgaeBase) is a unicellular species of marine green alga about 0.8 micrometres (µm) in diameter, the smallest free-living (non-symbiotic) eukaryote yet described. It has a very simple ultrastructure, and a compact genome. As a common member of global oceanic picoplankton populations, this organism has a major role in the carbon cycle in many areas. Recently, O. tauri has been the subject of studies using comparative genomics and functional genomics, as it is of interest to researchers because of its compact genome and green lineage. [From Wikipedia]
The experimental samples used for this species can be found in Data S10 of our supplementary data.