Cyanobacteria
From Wikipedia, the free encyclopedia
Cyanobacteria are a taxon of bacteria which conduct photosynthesis. They are not algae, though they were once called blue-green algae. It is a phylum of bacteria, with about 1500 species. In endosymbiont theory, mitochondria are descended from cyanobacteria. Their DNA profile is evidence for this.[1][2][3]
Cyanobacteria have an extremely long fossil record, at least back to 3,500 million years ago. They were the main organisms in the stromatolites of the Archaean and Proterozoic eons.[4]
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- ↑ Sapp J. 1994. Evolution by association: a history of symbiosis. Oxford.
- ↑ Giovannoni S.J. Turner S. Olsen G.J. Barns S. Lane D.J. and Pace N.R. 1988. Evolutionary relationships among cyanobacteria and green chloroplasts. J Bacteriol. 170: 3584–3592.
- ↑ Gupta, Radhey S; Mark Pereira; Charu Chandrasekera and Vanessa Johari 2003. Molecular signatures in protein sequences that are characteristic of cyanobacteria and plastidhomologues. International Journal of Systematic and Evolutionary Microbiology. 53, 1833-1842. Gupta, R
- ↑ Knoll, Andrew H. 2004. Life on a young planet: the first three billion years of evolution on Earth. Princeton, N.J. ISBN 0-691-12029-3
