Carbon Photoassimilation and Photosynthate Partitioning in Plants

C.V. PIATTONI; A.A. IGLESIAS; K.E TRÍPODI; C.M. FIGUEROA; F.E. PODESTÁ

Handbook of Photosynthesis

CRC Press Taylor & Francis Group

Lugar: Boca Raton; Año: 2016; p. 509 - 535

NTRACELLULAR AND INTERCELLULARPARTITIONING OF PHOTOSYNTHATESThe photosynthetic process involves the use of sunlight energyto convert (reduce) the inorganic atmospheric form of carbon(CO2) into organic molecules. The primary photosynthatesare carbohydrates, which then supply substrates to different metabolic pathways leading to the synthesis of other cellcomponents, such as lipids, amino acids, proteins, and nucleicacids. Also, these photogenerated biomolecules are key to sustaining life on earth, as they serve as the organic feedstockto many other heterotrophic organisms (Cortassa et al. 2012).Higher plants perform oxygenic photosynthesis in green tissues (mainly in leaves) and more specifially in cells havingchloroplasts. The entire process can be divided into two parts:the light phase and the synthetic phase. The light phase comprises steps mainly taking place at the thylakoid membrane ofchloroplast to convert the electromagnetic energy from lightinto reducing power (NADPH) and chemical energy (ATP)