Description: The mechanisms which enable photoreceptors to use radiation as a source of energy or information have traditionally been studied separately in different groups of organisms. As a result the structural similarities between these essential molecules in a wide range of species of both plants and animals have, to a great extent, been overlooked.In this book, current knowledge in the area is summarized, and recent research into the parallel evolution of photoreceptors in bacteria, algae, fungi, higher plants, arthropods, fish, birds, and mammals is discussed, providing a fascinating insight into the ways in which organisms have developed specific photoreceptors to fulfill their individual requirements. Photoreceptor diversity and properties are considered first, and subsequent chapters expand upon the structure, mode of action, and function of molecules such as flavins, carotenoids, chlorophyll, haem porphyrins, phytochrome, phycobilins, and visual pigments.The book bridges several disciplines to give an up-to-date account of the subject which will be indispensable to all those involved in research in photobiology. Key Features* Stresses the fundamental similarities between photoreceptor molecules in plants and animals* Focuses on current research into photoreceptor function* Demonstrates that these molecules form a "family" whose evolution can be investigated

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