RESUMEN
Reduction of flux through photorespiration has been viewed as a major way to improve crop carbon fixation and yield since the energy-consuming reactions associated with this pathway were discovered. This view has been supported by the biomasses increases observed in model species that expressed artificial bypass reactions to photorespiration. Here, we present an overview about the major current attempts to reduce photorespiratory losses in crop species and provide suggestions for future research priorities.
Asunto(s)
Productos Agrícolas/genética , Ingeniería Genética , Plantas/genética , Biomasa , Ciclo del Carbono , Dióxido de Carbono/metabolismo , Respiración de la Célula , Cloroplastos/metabolismo , Productos Agrícolas/metabolismo , Productos Agrícolas/efectos de la radiación , Luz , Mitocondrias/metabolismo , Fotosíntesis , Plantas/metabolismo , Plantas/efectos de la radiación , Plantas Modificadas GenéticamenteRESUMEN
Being intimately intertwined with (C3) photosynthesis, photorespiration is an incredibly high flux-bearing pathway. Traditionally, the photorespiratory cycle was viewed as closed pathway to refill the Calvin-Benson cycle with organic carbon. However, given the network nature of metabolism, it hence follows that photorespiration will interact with many other pathways. In this article, we review current understanding of these interactions and attempt to define key priorities for future research, which will allow us greater fundamental comprehension of general metabolic and developmental consequences of perturbation of this crucial metabolic process.
