Synonyms
Keywords
Antarctic, carbon and nitrogen cycles, desiccation, endosymbiosis, extremophiles, freeze-melt stress, halophily, irradiance, limits of survival, oxygenic photosynthesis, psychrophily, thermophily, ultraviolet radiation
Definition
Cyanobacteria are photosynthetic bacteria that use water as reducing power to release O2. They evolved early in Earth history. As bacterial primary producers, cyanobacteria occupy a privileged position among organisms due to their role in the carbon and nitrogen cycles. They are widely adapted to different extreme environments and play an important role, especially in cold polar and alpine environments, because of their tolerance of a wide temperature range, desiccation, freeze-melt and salinity stress.
Overview
Cyanobacteria are oxygenic photosynthetic prokaryotes responsible for the transformation of a reduced atmosphere to an oxidized one. The oxygen produced by this photosynthetic group...
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© 2011 Springer-Verlag Berlin Heidelberg
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Elster, J., Kvíderová, J. (2011). Cyanobacteria. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11274-4_378
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