Thalassiosiraceae

Thalassiosiraceae
	Fossil Thalassiosira sp.
Scientific classification
Domain:	Eukaryota
Clade:	Sar
Clade:	Stramenopiles
Phylum:	Ochrophyta
Clade:	Diatomeae
Class:	Bacillariophyceae
Order:	Thalassiosirales
Family:	Thalassiosiraceae; Lebour, 1930
Genera
	?Bacteriosira; †Conticribra; Coscinosira; Lindavia; Livingstonia; Mediolabrus; Microsiphona; Minidiscus; Parthaea; Planktoniella; Porosira; Praestephanos; Roundia; Shionodiscus; Stephanocyclus; Takanoa; Thalassiocyclus; Thalassiosira;

Thalassiosiraceae is a family of diatoms in the order Thalassiosirales. The family of Thalassiosiraceae have the unique quality of having a flat valve face. These diatoms are common in brackish, nearshore, and open-ocean habitats, with approximately the same number of freshwater and marine species.

Morphology and ultrastructure

Thalassiosiraceae include some of the smallest known diatoms, such as the genera Minidiscus and Mediolabrus with diameters as small as 1.9 μm (in M. comicus).^[2]

Unlike Naviculaceae who are symmetrical in shape, some Thalassiosiraceae are tangentially undulate.^{[citation needed]}

Thalassiosiraceae are centric diatoms with fultoportulae (central tube passing through the valve and two or more satellite pores).^[3] These structures can often be mistaken for areolae present in many diatom families that can be found in different forms such as those in Navicula or Gomphoneis known as lineolate and punctate areolae.^[4]

Model organisms

The species Thalassiosira pseudonana was chosen as the first eukaryotic marine phytoplankton for whole genome sequencing.^[5] 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 diatom light absorption, using the marine genus Thalassiosira.^{[citation needed]}

References

^ The planktonic diatoms of northern seas. MV Lebour, 1930
^ Jewson, David; Kuwata, Akira; Cros, Lluïsa; Fortuño, José Manuel; Estrada, Marta (2016-09-30). "Morphological adaptations to small size in the marine diatom Minidiscus comicus". Scientia Marina. 80 (S1): 89–96. doi:10.3989/scimar.04331.06C. hdl:10261/138162. ISSN 1886-8134.
^ "Fultoportula | Glossary - Diatoms of North America". diatoms.org. Retrieved 2025-04-25.
^ "Areola | Glossary - Diatoms of North America". diatoms.org. Retrieved 2019-06-11.
^ 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. CiteSeerX 10.1.1.690.4884. doi:10.1126/science.1101156. PMID 15459382.

"Guide to Lindavia | Genera - Diatoms of North America". diatoms.org. Retrieved 2019-06-11.
"Guide to Spicaticribra | Genera - Diatoms of North America". diatoms.org. Retrieved 2019-06-11.
"Guide to Thalassiosira | Genera - Diatoms of North America". diatoms.org. Retrieved 2019-06-11.
Data related to Thalassiosiraceae at Wikispecies
Media related to Thalassiosiraceae at Wikimedia Commons

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[1] The planktonic diatoms of northern seas. MV Lebour, 1930

[2] Jewson, David; Kuwata, Akira; Cros, Lluïsa; Fortuño, José Manuel; Estrada, Marta (2016-09-30). "Morphological adaptations to small size in the marine diatom Minidiscus comicus". Scientia Marina. 80 (S1): 89–96. doi:10.3989/scimar.04331.06C. hdl:10261/138162. ISSN 1886-8134.

[3] "Fultoportula | Glossary - Diatoms of North America". diatoms.org. Retrieved 2025-04-25.

[4] "Areola | Glossary - Diatoms of North America". diatoms.org. Retrieved 2019-06-11.

[armbrust04-5] 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. CiteSeerX 10.1.1.690.4884. doi:10.1126/science.1101156. PMID 15459382.

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