Understanding the eyes of plants, bacteria and fungi

We have eyes to perceive our surroundings. Lower organisms, like plants, bacteria and fungi do not have eyes, but use photoreceptor proteins instead. Phytochromes are red/far-red light photoreceptor proteins, which control a wide variety of functions in these organisms. I will discuss the structure of phytochromes with a special focus on how the proteins archive signaling.  The studies shine light on the chemical mechanism of how phyotchromes perceive light for optimal growth, movements, or reproduction in lower organisms.