The impacts of global change depend upon the capacity of plants for light and CO2 capture. This book thoroughly studies photosynthetic mechanisms at each structural level, from the cellular to leaves, crown, and canopy. The authors question whether photosynthetic adaptations take place primarily at the metabolic and biochemical level or through changes in structure and form, or both. In the interest of genetic engineering and agricultural applications, the relative importance of genes controlling both metabolic and light reactions as well as the structure, arrangement and orientation of photosynthesis are analyzed.