Anoxygenic photosynthesis and the delayed oxygenation of Earth’s atmosphere
"The emergence of oxygenic photosynthesis created a new niche with dramatic potential to transform energy flow through Earth’s biosphere. However, more primitive forms of photosynthesis that fix CO2 into biomass using electrons from reduced species like Fe(II) and H2 instead of water would have competed with Earth’s early oxygenic biosphere for essential nutrients. [...]"
Source: Nature Communications
Authors: Kazumi Ozaki et al.