Anoxygenic Photosynthesis

This lecture covers the process of anoxygenic photosynthesis, where organisms capture energy from sunlight under anoxic conditions. It explains the redox potential in purple bacteria, the cyclic electron flow, and the generation of ATP. The lecture also discusses the role of purple and green bacteria in cyclic electron flow, the structure and function of chlorosomes, and the adaptation of bacteria to low light conditions. Furthermore, it explores different types of anoxygenic phototrophs, such as purple sulfur bacteria, green sulfur bacteria, and green non-sulfur bacteria. The evolution of oxygenic photosynthesis from anoxygenic photosynthesis is detailed, along with the diversity of prokaryotic phototrophs.