التفاصيل البيبلوغرافية
| العنوان: |
The Genome of the Diatom Thalassiosira Pseudonana: Ecology, Evolution and Metabolism |
| المؤلفون: |
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., del Rio, T. G., Goodstein, D., Hadi, M. Z., Hellsten, U., Hildebrand, M., Jenkins, B. D., Jurka, J., Kapitonov, V. V., Kroger, N., Lau, W. Y., 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, Rokhsar, D S |
| المساهمون: |
United States. Department of Energy. |
| المصدر: |
Journal Name: Science; Journal Volume: 306; Journal Issue: 5693 |
| بيانات النشر: |
Lawrence Livermore National Laboratory |
| سنة النشر: |
2005 |
| المجموعة: |
University of North Texas: UNT Digital Library |
| مصطلحات موضوعية: |
Chromosomes, Chloroplasts, Enzymes, Carbon Dioxide, Ecology, 59 Basic Biological Sciences, Diatoms, Photosynthesis, Biosynthesis, Unicellular Algae, Silicic Acid, Cell Wall, Optical Microscopes, Metabolism, Carboxylic Acids, Algae |
| الوصف: |
Diatoms are unicellular algae with plastids acquired by secondary endosymbiosis. They are responsible for {approx}20% of global carbon fixation. We report the 34 Mbp draft nuclear genome of the marine diatom, Thalassiosira pseudonana and its 129 Kbp plastid and 44 Kbp 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, utilization of a range of nitrogenous compounds and a complete urea cycle, all attributes that allow diatoms to prosper in the marine environment. Diatoms are unicellular, photosynthetic, eukaryotic algae found throughout the world's oceans and freshwater systems. They form the base of short, energetically-efficient food webs that support large-scale coastal fisheries. Photosynthesis by marine diatoms generates as much as 40% of the 45-50 billion tonnes of organic carbon produced each year in the sea (1), and their role in global carbon cycling is predicted to be comparable to that of all terrestrial rainforests combined (2, 3). Over geological time, diatoms may have influenced global climate by changing the flux of atmospheric carbon dioxide into the oceans (4). A defining feature of diatoms is their ornately patterned silicified cell wall or frustule, which displays species-specific nano-structures of such fine detail that diatoms have long been used to test the resolution of optical microscopes. Recent attention has focused on biosynthesis of these nano-structures as a paradigm for future silica nanotechnology (5). The long history (over 180 million years) and dominance of diatoms in the oceans is reflected by their contributions to vast deposits of diatomite, most cherts and a significant fraction of current petroleum reserves (6). As photosynthetic heterokonts, diatoms reflect a fundamentally different evolutionary history from the higher plants that ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
PDF-file: 31 pages; size: 0 Kbytes; Text |
| اللغة: |
English |
| Relation: |
rep-no: UCRL-JRNL-217109; grantno: W-7405-ENG-48; osti: 888580; https://digital.library.unt.edu/ark:/67531/metadc885054/; ark: ark:/67531/metadc885054 |
| الاتاحة: |
https://digital.library.unt.edu/ark:/67531/metadc885054/ |
| رقم الانضمام: |
edsbas.7D27D592 |
| قاعدة البيانات: |
BASE |