Photosynthesis: Chlorophylls and accessory pigments
- Duration:.Photosynthesis: Overview of the light-dependent reactions The use of accessory pigments allows a broader range of wavelengths to be absorbed, and thus, .accessory pigments that are present Now let’s look at how pigments that are involved in photosynthesis perform this function.
Pigments for Photosynthesis - HyperPhysics Concepts
Some plants and plantlike organisms have developed other pigments to compensate for low light or poor use of light. Cyanobacteria and red algae have phycocyanin and allophycocyanin as accessory pigments to absorbe orange light. They also have a red pigment called phycoerythrin that absorbs green light and extends the range of photosynthesis. The red pigment is found in vegetables. Some red algae are in fact nearly black, so that increases their photosynthetic efficiency. Brown algae have the pigment fucoxanthin in addition to chlorophyll to widen their absorption range. These red and brown algae grow to depths around 270 meters where the light is less than 1% of surface light.
A photosynthetic pigment (accessory pigment; Green plants have six closely related photosynthetic pigments present in every plant that performs photosynthesis.