The Genome of the Diatom Thalassiosira Pseudonana : Ecology, Evolution, and Metabolism


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kvalentin [ at ] awi-bremerhaven.de

Abstract

Diatoms are unicellular algae with plastids acquired by secondary endosymbiosis. They are responsible for approximately 20% of global carbon fixation. We report the 34 million-base pair draft nuclear genome of the marine diatom Thalassiosira pseudonana and its 129 thousand-base pair plastid and 44 thousand-base pair mitochondrial genomes. Sequence and optical restriction mapping revealed 24 diploid nuclear chromosomes. We identified novel genes for silicic acid transport and formation of silica-based cell walls, high-affinity iron uptake, biosynthetic enzymes for several types of polyunsaturated fatty acids, use of a range of nitrogenous compounds, and a complete urea cycle, all attributes that allow diatoms to prosper in aquatic environments.



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ISI/Scopus peer-reviewed
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Eprint ID
12229
DOI https://www.doi.org/10.1126/science.1101156

Cite as
Armbrust, E. V. , Berges, J. A. , Bowler, C. , Green, B. R. , Martinez, D. , Putnam, N. H. , Zhou, S. , Allen, A. E. , Apt, K. E. , Bechner, M. , Brzezinski, M. A. , Chaal, B. K. , Chiovitti, A. , Davis, A. K. , Demarest, M. S. , Detter, J. C. , Glavina, T. , Goodstein, D. , Hadi, M. Z. , Hellsten, U. , Hildebrand, M. , Jenkins, B. D. , Jurka, J. , Kapitonov, V. V. , Kröger, N. , Lau, W. W. , Lane, T. W. , Larimer, F. W. , Lippmeier, J. C. , Lucas, S. , Medina, M. , Montsant, A. , Obornik, M. , Parker, M. S. , Palenik, B. , Pazour, G. J. , Richardson, P. M. , Rynearson, T. A. , Saito, M. A. , Schwartz, D. C. , Thamatrakoln, K. , Valentin, K. , Vardi, A. , Wilkerson, F. P. and Rokhsar, D. S. (2004): The Genome of the Diatom Thalassiosira Pseudonana : Ecology, Evolution, and Metabolism , Science, 306 (5693), pp. 79-86 . doi: https://www.doi.org/10.1126/science.1101156


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