… How can we evaluate the evolutionary origins of oxygenic photosynthetic Cyanobacteria in
the absence of a robust early fossil record? An alternative approach to the problem relies on …

… Oxygenic photosynthesis is the largest source of O 2 in the atmosphere today and the
evolution of oxygenic photosynthesis transformed the reducing conditions of early Earth's …

… Additional evolutionary steps that led to two linked photosystems were also needed to
produce the present system found in all oxygenic photosynthetic organisms. These steps either …

… following the evolution of oxygenic photosynthesis, we applied … the emergence of oxygenic
photosynthesis, a geologically … These results suggest that oxygenic photosynthesis arose …

… However, geological and geochemical evidence from older sedimentary rocks indicates that
oxygenic photosynthesis evolved well before this oxygenation event. Fluid-inclusion oils in …

… Instead, rather than arguing in favour or against a particular age or methodology, our
objective was to contrast the evolution of oxygenic photosynthesis with the evolution of enzymes …

… Virtually all oxygen in our atmosphere has been produced by oxygenic photosynthetic
organisms. However, for long periods in the history of our planet and life, oxygen may not have …

… evidence for photosynthesis and the structural and functional differences between anoxygenic
and oxygenic photosynthesis, and then goes on to discuss the evolutionary transitions …

… out oxygenic photosynthesis. … Oxygenic photosynthesis has formed the oxygen we breathe
and most of the biomass we use as food, feed, fibre and fuel. Solar driven oxygen evolution …

… understanding of the evolution of photosynthetic reaction centres … oxygenic photosynthesis
were present throughout the Archean eon. Evolutionary studies of PSII imply that oxygenic …