engleski

Photosynthesis

For us humans, photosynthesis is arguably the most important biochemical process on Earth. Plants, algae, and photosynthetic bacteria carry out the fundamental processes of photosynthetic energy conversion, transforming sunlight into chemical energy necessary to sustain autotrophic life. Evidence exist that basic forms of (anoxygenic) photosynthesis emerged on Earth already 3.6 billion years ago, followed by more elaborate oxygenic photosynthesis. Oxygenic photosynthesis has changed the Earth and life on it fundamentally. Photosynthetic apparatus of vascular plants is a mosaic structure consisting of elements that have evolved separately and have come up together in the process of endosymbiosis. I will present theories of how light harvesting antenna complexes evolved, how water-splitting reaction centres were formed, and how some photosynthetic molecular pathways are build further, with each step fulfilling more efficient function.

oxygenic photosynthesis; plants; cyanobacteria

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