Thalassiosira pseudonana

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Thalassiosira pseudonana
Scientific classification
Kingdom: Chromalveolata
Phylum: Heterokontophyta
Class: Coscinodiscophyceae
Order: Thalassiosirales
Family: Thalassiosiraceae
Genus: Thalassiosira
Species: T. pseudonana
Binomial name
Thalassiosira pseudonana
(Cleve, 1873)

Thalassiosira pseudonana is a species of marine centric diatom. It was chosen as the first eukaryotic marine phytoplankton for whole genome sequencing.[1] T. pseudonana was selected for this study because it is a model for diatom physiology studies, belongs to a genus widely distributed throughout the world's oceans, and has a relatively small genome at 34 mega base pairs.Scientists are researching on diatom light absorption, using the marine diatom of Thalassiosira.

The clone of T. pseudonana that was sequenced is CCMP 1335 and is available from the National Center for Marine Algae and Microbiota at Bigelow Laboratory for Ocean Sciences. This clone was originally collected in 1958 from Moriches Bay (Long Island, New York) and has been maintained continuously in culture.


  1. ^ Armbrust, E.; Berges, J.; Bowler, C.; Green, B.; Martinez, D.; Putnam, N.; Zhou, S.; Allen, A.; Apt, K.; 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. (2004). "The genome of the diatom Thalassiosira pseudonana: ecology, evolution, and metabolism". Science 306 (5693): 79–86. Bibcode:2004Sci...306...79A. doi:10.1126/science.1101156. PMID 15459382.  edit