Nodularia
| Nodularia | |
|---|---|
| |
| 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
[edit]Nodularia may form solitary filaments or groups of filaments. They reproduce by the formation of hormogonia, filament breakage, and by akinetes .[3]
Recent evolution
[edit]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
[edit]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
[edit]- 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
[edit]- ^ 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.