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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
The complete chloroplast and mitochondrial DNA sequence of Ostreococcus tauri: Organelle genomes of the smallest eukaryote are examples of compaction
Molecular Biology and Evolution, Volume 24, No. 4, Year 2007
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Description
The complete nucleotide sequence of the mt (mitochondrial) and cp (chloroplast) genomes of the unicellular green alga Ostreococcus tauri has been determined. The mt genome assembles as a circle of 44,237 bp and contains 65 genes. With an overall average length of only 42 bp for the intergenic regions, this is the most gene-dense mt genome of all Chlorophyta. Furthermore, it is characterized by a unique segmental duplication, encompassing 22 genes and covering 44% of the genome. Such a duplication has not been observed before in green algae, although it is also present in the mt genomes of higher plants. The quadripartite cp genome forms a circle of 71,666 bp, containing 86 genes divided over a larger and a smaller single-copy region, separated by 2 inverted repeat sequences. Based on genome size and number of genes, the Ostreococcus cp genome is the smallest known among the green algae. Phylogenetic analyses based on a concatenated alignment of cp, mt, and nuclear genes confirm the position of O. tauri within the Prasinophyceae, an early branch of the Chlorophyta. © The Author 2007. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved.
Authors & Co-Authors
Derelle, Évelyne
France, Paris
Sorbonne Université
Ferraz, Concepción
France, Montpellier
Igh Institut de Génétique Humaine
Moreau, Hervé
France, Paris
Sorbonne Université
Van de Peer, Y.
Belgium, Ghent
Vlaams Instituut Voor Biotechnologie
Statistics
Citations: 117
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1093/molbev/msm012
ISSN:
15371719
Research Areas
Cancer
Genetics And Genomics