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

The Ectocarpus genome and the independent evolution of multicellularity in brown algae
The Ectocarpus genome and the independent evolution of multicellularity in brown algae
Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related1. 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 algae2, 3, 4, 5, closely related to the kelps6, 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 genetic2 approaches to explore these and other4, 5 aspects of brown algal biology further.

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Cock, J. Mark, Sterck, Lieven, Rouzé, Pierre, Scornet, Delphine, Allen, Andrew E., Amoutzias, Grigoris, Anthouard, Veronique, Artiguenave, François, Aury, Jean-Marc, Badger, Jonathan H., Beszteri, Bank, Billiau, Kenny, Bonnet, Eric, Bothwell, John H., Bowler, Chris, Boyen, Catherine, Brownlee, Colin, Carrano, Carl J., Charrier, Bénédicte, Cho, Ga Youn, Coelho, Susana M., Collén, Jonas, Corre, Erwan, Da Silva, Corinne, Delage, Ludovic, Delaroque, Nicolas, Dittami, Simon M., Doulbeau, Sylvie, Elias, Marek, Farnham, Garry, Gachon, Claire M.M., Gschloessl, Bernhard, Heesch, Svenja, Jabbari, Kamel, Jubin, Claire, Kawai, Hiroshi, Kimura, Kei, Kloareg, Bernard, Küpper, Frithjof C., Lang, Daniel, Le Bail, Aude, Leblanc, Catherine, Lerouge, Patrice, Lohr, Martin, Lopez, Pascal J., Martens, Cindy, Maumus, Florian, Michel, Gurvan, Miranda-Saavedra, Diego, Morales, Julia, Moreau, Hervé, Motomura, Taizo, Nagasato, Chikako, Napoli, Carolyn A., Nelson, David R., Nyvall-Collén, Pi, Peters, Akira F., Pommier, Cyril, Potin, Philippe, Poulain, Julie, Quesneville, Hadi, Read, Betsy, Rensing, Stefan A., Ritter, Andrés, Rousvoal, Sylvie, Samanta, Manoj, Samson, Gaelle, Schroeder, Declan C., Ségurens, Béatrice, Strittmatter, Martina, Tonon, Thierry, Tregear, James W., Valentin, Klaus, von Dassow, Peter, Yamagishi, Takahiro, Van de Peer, Yves and Wincker, Patrick (2010) The Ectocarpus genome and the independent evolution of multicellularity in brown algae. Nature, 465 (7298), 617-621. (doi:10.1038/nature09016).

Record type: Article

Abstract

Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related1. 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 algae2, 3, 4, 5, closely related to the kelps6, 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 genetic2 approaches to explore these and other4, 5 aspects of brown algal biology further.

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Published date: 3 June 2010
Organisations: Ocean and Earth Science

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Local EPrints ID: 340285
URI: http://eprints.soton.ac.uk/id/eprint/340285
ISSN: 0028-0836
PURE UUID: 2ee8adda-5631-479e-be26-0f837cf3d9d3

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Date deposited: 18 Jun 2012 14:27
Last modified: 16 Dec 2019 20:37

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Contributors

Author: J. Mark Cock
Author: Lieven Sterck
Author: Pierre Rouzé
Author: Delphine Scornet
Author: Andrew E. Allen
Author: Grigoris Amoutzias
Author: Veronique Anthouard
Author: François Artiguenave
Author: Jean-Marc Aury
Author: Jonathan H. Badger
Author: Bank Beszteri
Author: Kenny Billiau
Author: Eric Bonnet
Author: John H. Bothwell
Author: Chris Bowler
Author: Catherine Boyen
Author: Colin Brownlee
Author: Carl J. Carrano
Author: Bénédicte Charrier
Author: Ga Youn Cho
Author: Susana M. Coelho
Author: Jonas Collén
Author: Erwan Corre
Author: Corinne Da Silva
Author: Ludovic Delage
Author: Nicolas Delaroque
Author: Simon M. Dittami
Author: Sylvie Doulbeau
Author: Marek Elias
Author: Garry Farnham
Author: Claire M.M. Gachon
Author: Bernhard Gschloessl
Author: Svenja Heesch
Author: Kamel Jabbari
Author: Claire Jubin
Author: Hiroshi Kawai
Author: Kei Kimura
Author: Bernard Kloareg
Author: Frithjof C. Küpper
Author: Daniel Lang
Author: Aude Le Bail
Author: Catherine Leblanc
Author: Patrice Lerouge
Author: Martin Lohr
Author: Pascal J. Lopez
Author: Cindy Martens
Author: Florian Maumus
Author: Gurvan Michel
Author: Diego Miranda-Saavedra
Author: Julia Morales
Author: Hervé Moreau
Author: Taizo Motomura
Author: Chikako Nagasato
Author: Carolyn A. Napoli
Author: David R. Nelson
Author: Pi Nyvall-Collén
Author: Akira F. Peters
Author: Cyril Pommier
Author: Philippe Potin
Author: Julie Poulain
Author: Hadi Quesneville
Author: Betsy Read
Author: Stefan A. Rensing
Author: Andrés Ritter
Author: Sylvie Rousvoal
Author: Manoj Samanta
Author: Gaelle Samson
Author: Declan C. Schroeder
Author: Béatrice Ségurens
Author: Martina Strittmatter
Author: Thierry Tonon
Author: James W. Tregear
Author: Klaus Valentin
Author: Peter von Dassow
Author: Takahiro Yamagishi
Author: Yves Van de Peer
Author: Patrick Wincker

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