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The Ectocarpus genome and the independent evolution of multicellularity in brown algae
Cock, J.M.; Sterck, L.; Rouzé, P.; Scornet, D.; Allen, A.E.; Amoutzias, G.; Anthouard, V.; Artiguenave, F.; Aury, J.-M.; Badger, J.H.; Beszteri, B.; Billiau, K.; Bonnet, E.; Bothwell, J.H.; Bowler, C.; Boyen, C.; Brownlee, C.; Carrano, C.J.; Charrier, B.; Cho, G.Y.; Coelho, S.M.; Collén, J.; Corre, E.; Da Silva, C.; Delage, L.; Delaroque, N.; Dittami, S.M.; Doulbeau, S.; Elias, M.; Farnham, G.; Gachon, C.M.M.; Gschloessl, B.; Heesch, S.; Jabbari, K.; Jubin, C.; Kawai, H.; Kimura, K.; Kloareg, B.; Küpper, F.C.; Lang, D.; Le Bail, A.; Leblanc, C.; Lerouge, P.; Lohr, M.; Lopez, P.J.; Martens, C.; Maumus, F.; Michel, G.; Miranda-Saavedra, D.; Morales, J.; Moreau, H.; Motomura, T.; Nagasato, C.; Napoli, C.A.; Nelson, D.R.; Nyvall-Collén, P.; Peters, A.F.; Pommier, C.; Potin, Ph.; Poulain, J.; Quesneville, H.; Read, B.; Rensing, S.A.; Ritter, A.; Rousvoal, S.; Samanta, M.; Samson, G.; Schroeder, D.C.; Segurens, B.; Strittmatter, M.; Tonon, T.; Tregear, J.W.; Valentin, K.; von Dassow, P.; Yamagishi, T.; Van de Peer, Y.; Wincker, P. (2010). The Ectocarpus genome and the independent evolution of multicellularity in brown algae. Nature (Lond.) 465(7298): 617-621. hdl.handle.net/10.1038/nature09016
In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer
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  • Cock, J.M.
  • Sterck, L., meer
  • Rouzé, P., meer
  • Scornet, D.
  • Allen, A.E.
  • Amoutzias, G., meer
  • Anthouard, V.
  • Artiguenave, F.
  • Aury, J.-M.
  • Badger, J.H.
  • Beszteri, B.
  • Billiau, K., meer
  • Bonnet, E., meer
  • Bothwell, J.H.
  • Bowler, C.
  • Boyen, C., meer
  • Brownlee, C., meer
  • Carrano, C.J.
  • Charrier, B.
  • Cho, G.Y.
  • Coelho, S.M.
  • Collén, J.
  • Corre, E.
  • Da Silva, C.
  • Delage, L.
  • Delaroque, N.
  • Dittami, S.M.
  • Doulbeau, S.
  • Elias, M.
  • Farnham, G.
  • Gachon, C.M.M.
  • Gschloessl, B.
  • Heesch, S.
  • Jabbari, K.
  • Jubin, C.
  • Kawai, H.
  • Kimura, K.
  • Kloareg, B., meer
  • Küpper, F.C.
  • Lang, D.
  • Le Bail, A.
  • Leblanc, C.
  • Lerouge, P.
  • Lohr, M.
  • Lopez, P.J.
  • Martens, C., meer
  • Maumus, F.
  • Michel, G.
  • Miranda-Saavedra, D.
  • Morales, J.
  • Moreau, H.
  • Motomura, T.
  • Nagasato, C.
  • Napoli, C.A.
  • Nelson, D.R.
  • Nyvall-Collén, P.
  • Peters, A.F.
  • Pommier, C.
  • Potin, Ph., meer
  • Poulain, J.
  • Quesneville, H.
  • Read, B.
  • Rensing, S.A.
  • Ritter, A., meer
  • Rousvoal, S.
  • Samanta, M.
  • Samson, G.
  • Schroeder, D.C.
  • Segurens, B.
  • Strittmatter, M.
  • Tonon, T.
  • Tregear, J.W.
  • Valentin, K.
  • von Dassow, P.
  • Yamagishi, T.
  • Van de Peer, Y., meer
  • Wincker, P.

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 algae, closely related to the kelps (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 other aspects of brown algal biology further.

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