The Ectocarpus genome and the independent evolution of multicellularity in brown algae

J.M. Cock, L. Sterck, P. Rouzé, D. Scornet, A.A. Allen, G. Amoutzias, V. Anthouard, F. Artiguenave, Jean-Marc Aury, J.H. Badger, B. Beszteri, K. Billiau, E. Bonnet, John Bothwell, Chris Bowler, Catherine Boyen, Colin Brownlee, Carl J. Carrano, Benedicte Charrier, Ga Youn ChoSusana M. Coelho, Jonas Collen, Erwan Corre, Corinne Da Silva, Ludovic Delage, Nicolas Delaroque, Simon M. Dittami, Sylvie Doulbeau, Marek Elias, Garry Farnham, Claire M. M. Gachon, Bernhard Gschloessl, Svenja Heesch, Kamel Jabbari, Claire Jubin, Hiroshi Kawai, Kei Kimura, Bernard Kloareg, Frithjof C. Kupper, Daniel Lang, Aude Le Bail, Catherine Leblanc, Patrice Lerouge, Martin Lohr, Pascal J. Lopez, Cindy Martens, Florian Maumus, Gurvan Michel, Diego Miranda-Saavedra, Julia Morales, Herve Moreau, Taizo Motomura, Chikako Nagasato, Carolyn A. Napoli, David R. Nelson, Pi Nyvall-Collen, Akira F. Peters, Cyril Pommier, Philippe Potin, Julie Poulain, Hadi Quesneville, Betsey Read, Stefan A. Rensing, Andres Ritter, Sylvie Rousvoal, Manoj Samanta, Gaelle Samson, Declan C. Schroeder, Beatrice Segurens, Martina Strittmatter, Thierry Tonon, James W. Tregear, Klaus Valentin, Peter von Dassow, Takahiro Yamagishi, Yves Van de Peer, Patrick Wincker

Research output: Contribution to journalArticle

539 Citations (Scopus)

Abstract

Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related(1). These seaweeds are the dominant species in rocky coastal ecosystems and they exhibit many interesting adaptations to these, often harsh, environments. Brown algae are also one of only a small number of eukaryotic lineages that have evolved complex multicellularity (Fig. 1). We report the 214 million base pair (Mbp) genome sequence of the filamentous seaweed Ectocarpus siliculosus (Dillwyn) Lyngbye, a model organism for brown algae(2-5), closely related to the kelps(6,7) (Fig. 1). Genome features such as the presence of an extended set of light-harvesting and pigment biosynthesis genes and new metabolic processes such as halide metabolism help explain the ability of this organism to cope with the highly variable tidal environment. The evolution of multicellularity in this lineage is correlated with the presence of a rich array of signal transduction genes. Of particular interest is the presence of a family of receptor kinases, as the independent evolution of related molecules has been linked with the emergence of multicellularity in both the animal and green plant lineages. The Ectocarpus genome sequence represents an important step towards developing this organism as a model species, providing the possibility to combine genomic and genetic(2) approaches to explore these and other(4,5) aspects of brown algal biology further.
Original languageEnglish
Pages (from-to)617-621
Number of pages5
JournalNature
Volume465
Issue number7298
DOIs
Publication statusPublished - 03 Jun 2010

ASJC Scopus subject areas

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