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

      Science
      American Association for the Advancement of Science (AAAS)

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          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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          Author and article information

          Journal
          Science
          Science
          American Association for the Advancement of Science (AAAS)
          0036-8075
          1095-9203
          October 01 2004
          October 01 2004
          : 306
          : 5693
          : 79-86
          Article
          10.1126/science.1101156
          15459382
          db70a210-4bce-451a-9088-5159ea99cd67
          © 2004
          History

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