Photoreceptors

There are several types of photoreceptors in plants. Some of these photoreceptors are phytochromes, cytochromes, and phototropins. Phytochromes are a class of photoreceptor that plants use to detect light and mediate a photosynthetic response. Cytochromes are photoreceptors that function as electron transfer agents in metabolic pathways. Cytochromes are compounds consisting of a heme bonded to a protein. Finally, phototropins are photoreceptors that mediate phototropic responses in higher plants. They allow plants to alter their response and growth to light.