期刊
FREE RADICAL BIOLOGY AND MEDICINE
卷 140, 期 -, 页码 200-205出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.freeradbiomed.2019.03.029
关键词
Cyanobacteria; Oxygenic photosynthesis; Aerobic respiration
资金
- Australian Laureate Fellowship [FL150100038]
- Australian Research Council
For well over a hundred years, members of the bacterial phylum Cyanobacteria have been considered strictly photosynthetic microorganisms, reflected in their classification as blue-green algae in the botanical code. Recently, genomes recovered from environmental sequencing surveys representing two major uncultured basal lineages (classes) of Cyanobacteria have been found to completely lack photosynthetic and CO2 fixation genes. The most likely explanation for this finding is that oxygenic photosynthesis was not an ancestral feature of the Cyanobacteria, and rather originated following divergence of the primary lines of descent. Here we describe recent findings on the evolution of aerobic respiration in the non-photosynthetic cyanobacterial classes, and how this has been interpreted by researchers interested in the evolution of oxygenic photosynthesis.
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