The following points highlight the seven main types of photoreceptors of photosynthetic pigments. The photoreceptors are: 1. Phycobilins 2. Cryptochrome 3. UV-B Receptors 4. Flavonoids 5. Betacyanins 6. Chloroplasts 7. Carotenoid Pigments. Photoreceptor # 1. Phycobilins: These are present in red algae, cyanobacteria or even green plants and serve as accessory light- harvesting pigments. Four phycobilins are reported; three are [...]
Light is a form of radiant energy, a narrow band of energy within the continuous electromagnetic spectrum of radiation omitted by the sun. It is known since long that for photosynthesis energy is obtained from light. In actual practice light is a mixture of different colours and the electromagnetic spectrum comprises radiations of different wavelengths. The visible spectrum ranges from [...]
The following points highlight the three main products of photosynthetic cell. The products are: 1. Starch 2. Sucrose 3. Amino Acids. Product # 1. Starch: The synthesis of starch and its regulation through ADP-glucose pyrophosphorylase has been vividly worked out and described in one of the earlier chapters. Recent studies have brought out that ratio of the activator glycerate-3-phosphate and [...]