Now in its third edition, this book describes photosynthesis by considering the partial processes involved throughout the various level of plant (cell, organelle and molecule), and their contributions to the complete process. It also considers the molecular and biochemical events which take place in the photosynthetic system. Finally it explains how these determine the physiological characteristics of plant productivity. The new edition has been extensively revised with comprehensively updated references and many new figures. It includes a new chapter on the applications of genetic modification of photosynthesis systems.