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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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The Phaeodactylum genome reveals the evolutionary history of diatom genomes Bowler, C.; Allen, A.E.; Badger, J.H.; Grimwood, J.; Jabbari, K.; Kuo, A.; Maheswari, U.; Martens, C.; Maumus, F.; Otillar, R.P.; Rayko, E.; Salamov, A.A.; Vandepoele, K.; Beszteri, B.; Gruber, A.; Heijde, M.; Katinka, M.; Mock, T.; Valentin, K.; Verret, F.; Berges, J.A.; Brownlee, C.; Cadoret, J.-P.; Chiovitti, A.; Choi, C.J.; Coesel, S.; De Martino, A.; Detter, J.C.; Durkin, C.; Falciatore, A.; Fournet, J.; Haruta, M.; Huysman, M.J.J.; Jenkins, B.D.; Jiroutova, K.; Jorgensen, R.E.; Joubert, Y.; Kaplan, A.; Kröger, N.; Kroth, P.G.; La Roche, J.; Lindquist, E.; Lommer, M.; Martin-Jézéquel, V.; Lopez, P.J.; Lucas, S.; Mangogna, M.; McGinnis, K.; Medlin, L.K.; Montsant, A.; Oudot-Le Secq, M.-P.; Napoli, C.; Obornik, M.; Parker, M.S.; Petit, J.-L.; Porcel, B.M.; Poulsen, N.; Robison, M.; Rychlewsk, L.; Rynearson, T.A.; Schmutz, J.; Shapiro, H.; Siaut, M.; Stanley, M.; Sussman, M.R.; Taylor, A.R.; Vardi, A.; von Dassow, P.; Vyverman, W.; Willis, A.; Wyrwicz, L.S.; Rokhsar, D.; Weissenbach, J.; Armbrust, E.V.; Green, B.R.; Van de Peer, Y.; Grigoriev, I.V. (2008). The Phaeodactylum genome reveals the evolutionary history of diatom genomes. Nature (Lond.) 456(7219): 239-244. dx.doi.org/10.1038/nature07410 In: Nature: International Weekly Journal of Science. Nature Publishing Group: London. ISSN 0028-0836; e-ISSN 1476-4687, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 140721 [ download pdf ]

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Trefwoorden

Algae > Diatoms Biological phenomena > Evolution Endosymbionts Environments > Aquatic environment > Marine environment Genetic diversity Genomes Phaeodactylum tricornutum Bohlin, 1897 [WoRMS]; Thalassiosira pseudonana Hasle & Heimdal, 1970 [WoRMS] Marien/Kust

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Auteurs		Top
Bowler, C. Allen, A.E. Badger, J.H. Grimwood, J. Jabbari, K. Kuo, A. Maheswari, U. Martens, C., meer Maumus, F. Otillar, R.P. Rayko, E. Salamov, A.A. Vandepoele, K., meer Beszteri, B. Gruber, A. Heijde, M. Katinka, M. Mock, T. Valentin, K. Verret, F. Berges, J.A. Brownlee, C., meer Cadoret, J.-P. Chiovitti, A. Choi, C.J. Coesel, S.	De Martino, A. Detter, J.C. Durkin, C. Falciatore, A. Fournet, J. Haruta, M. Huysman, M.J.J., meer Jenkins, B.D. Jiroutova, K. Jorgensen, R.E. Joubert, Y. Kaplan, A. Kröger, N. Kroth, P.G. La Roche, J. Lindquist, E. Lommer, M. Martin-Jézéquel, V. Lopez, P.J. Lucas, S. Mangogna, M. McGinnis, K. Medlin, L.K., meer Montsant, A. Oudot-Le Secq, M.-P. Napoli, C.	Obornik, M. Parker, M.S. Petit, J.-L. Porcel, B.M. Poulsen, N. Robison, M. Rychlewsk, L. Rynearson, T.A. Schmutz, J. Shapiro, H. Siaut, M. Stanley, M. Sussman, M.R. Taylor, A.R. Vardi, A. von Dassow, P. Vyverman, W., meer Willis, A. Wyrwicz, L.S. Rokhsar, D. Weissenbach, J. Armbrust, E.V. Green, B.R. Van de Peer, Y., meer Grigoriev, I.V.

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Abstract

Diatoms are photosynthetic secondary endosymbionts found throughout marine and freshwater environments, and are believed to be responsible for around one-fifth of the primary productivity on Earth. The genome sequence of the marine centric diatom Thalassiosira pseudonana was recently reported, revealing a wealth of information about diatom biology. Here we report the complete genome sequence of the pennate diatom Phaeodactylum tricornutum and compare it with that of T. pseudonan to clarify evolutionary origins, functional significance and ubiquity of these features throughout diatoms. In spite of the fact that the pennate and centric lineages have only been diverging for 90 million years, their genome structures are dramatically different and a substantial fraction of genes (~40%) are not shared by these representatives of the two lineages. Analysis of molecular divergence compared with yeasts and metazoans reveals rapid rates of gene diversification in diatoms. Contributing factors include selective gene family expansions, differential losses and gains of genes and introns, and differential mobilization of transposable elements. Most significantly, we document the presence of hundreds of genes from bacteria. More than 300 of these gene transfers are found in both diatoms, attesting to their ancient origins, and many are likely to provide novel possibilities for metabolite management and for perception of environmental signals. These findings go a long way towards explaining the incredible diversity and success of the diatoms in contemporary oceans.

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