RCC4221
Ostreococcus belongs to the Mamiellophyceae, an
early-diverging class within the green plant lineage, and is
reported as a globally abundant, single-celled alga thriving in the
upper (illuminated) water column of the oceans. The most striking
feature of O. tauri and related species is their minimal
cellular organization: a naked, nearly 1-micron cell, lacking
flagella, with a single chloroplast and mitochondrion.
While comparative genomics of Ostreococcus strains have unravelled four different species in this genus, O. tauri, O. lucimarinus, O. sp RCC809 and O. mediterraneus, the intra-specific level of diversity in these enigmatic organisms is yet unknown. Population genomics analysis will help to understand the role of standing genomic variation in environmental adaptation of these microorganisms.
This portal gives access to the updated genome of O. tauri RCC4221, obtained by improving the historical Sanger-sequenced genome sequence with high-coverage Illumina sequencing [1], and the nuclear polymorphisms obtained from re-sequencing 13 O. tauri strains (CSP-129) [2].
Publications
[1] An improved genome of the model marine alga Ostreococcus
tauri unfolds by assessing Illumina de novo
assemblies. Blanc-Mathieu R, Verhelst B, Derelle E, Rombauts S,
Bouget FY, Carré I, Château A, Eyre-Walker A, Grimsley
N, Moreau H, Piégu B, Rivals E, Schackwitz W, Van de Peer Y,
Piganeau G. BMC Genomics. 2014 Dec 13;15:1103.
doi: 10.1186/1471-2164-15-1103.
Genome Reference(s)
Blanc-Mathieu R, Verhelst B, Derelle E, Rombauts S, Bouget FY, Carré I, Château A, Eyre-Walker A, Grimsley N, Moreau H, Piégu B, Rivals E, Schackwitz W, Van de Peer Y, Piganeau G
An improved genome of the model marine alga Ostreococcus tauri unfolds by assessing Illumina de novo assemblies.
BMC Genomics. 2014 Dec 13;15():1103. doi: 10.1186/1471-2164-15-1103
Palenik B, Grimwood J, Aerts A, Rouzé P, Salamov A, Putnam N, Dupont C, Jorgensen R, Derelle E, Rombauts S, Zhou K, Otillar R, Merchant SS, Podell S, Gaasterland T, Napoli C, Gendler K, Manuell A, Tai V, Vallon O, Piganeau G, Jancek S, Heijde M, Jabbari K, Bowler C, Lohr M, Robbens S, Werner G, Dubchak I, Pazour GJ, Ren Q, Paulsen I, Delwiche C, Schmutz J, Rokhsar D, Van de Peer Y, Moreau H, Grigoriev IV
The tiny eukaryote Ostreococcus provides genomic insights into the paradox of plankton speciation.
Proc Natl Acad Sci U S A. 2007 May 1;104(18):7705-10. doi: 10.1073/pnas.0611046104
