| Nodularia | |
|---|---|
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| Satellite image of a large bloom of Nodularia swirling in the Baltic Sea | |
Scientific classification 
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| Domain: | Bacteria |
| Kingdom: | Bacillati |
| Phylum: | Cyanobacteriota |
| Class: | Cyanophyceae |
| Order: | Nostocales |
| Family: | Aphanizomenonaceae |
| Genus: | Nodularia Mertens 1822 |
| Species | |
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Nodularia armorica | |
Nodularia is a genus of filamentous nitrogen-fixing cyanobacteria, or blue-green algae.1 They occur mainly in brackish or salinic waters, such as the hypersaline Makgadikgadi Pans,2 the Peel-Harvey Estuary in Western Australia or the Baltic Sea. Nodularia cells occasionally form heavy algal blooms. Some strains produce a cyanotoxin called nodularin R, which is harmful to humans.
The type species for the genus is Nodularia spumigena Mertens ex Bornet & Flahault, 1886.
Morphology
Nodularia may form solitary filaments or groups of filaments. They reproduce by the formation of hormogonia, filament breakage, and by akinetes.3
Recent evolution
As climate change influenced the local sea surface temperature, N. spumigena in the Baltic Sea changed their photosynthetic optimum temperature too. This was revealed by a sediment core from the Eastern Gotland Basin corresponding to 1987–2020, providing strains of N. spumigena that were revived and tested in the lab.4
See also
See also
Kruger, T., Oelmuller, R., and Luckas, B. (2009) Comparative PCR analysis of toxic Nodularia spumigena and non-toxic Nodularia harveyana (Nostocales, Cyanobacteria) with respect to the nodularia synthetase gene cluster. Eur. J. Phycol. 44 (3): 291 - 295.
References
References
- C. Michael Hogan (2008) Makgadikgadi, The Megalithic Portal, ed. Andy Burnham
- Jiří Komárek and Tomáš Hauer Cyano Database of genera: Nodularia
- Martin Dworkin and Stanley Falkow (2006) The Prokaryotes: a handbook on the biology of bacteria, Published by Springer, ISBN 0-387-25494-3
Line notes
- Jiří Komárek and Tomáš Hauer
- C. Michael Hogan, 2008
- Martin Dworkin and Stanley Falkow, 2006
- Medwed, Cynthia; Karsten, Ulf; Romahn, Juliane; Kaiser, Jérôme; Dellwig, Olaf; Arz, Helge; Kremp, Anke (8 January 2024). "Archives of cyanobacterial traits: insights from resurrected Nodularia spumigena from Baltic Sea sediments reveal a shift in temperature optima". ISME Communications. 4 (1). doi:10.1093/ismeco/ycae140. PMC 11605557.