Metabolic regulation of photosynthesis

Abstract

Photosynthesis is fundamental to biomass production, but is a dynamic process sensitive to environmental constraints. In recent years, approaches to increase biomass and grain yield by altering photosynthetically related processes in the plant have received considerable attention. However, improving biomass yield requires a predictive understanding of the molecular mechanisms that allow photosynthesis to be adjusted. The important roles of metabolic reactions external to those directly involved in photosynthesis are highlighted in this review; however, our major focus is on the routes taken to improve photosynthetic carbon assimilation and to increase photosynthetic efficiency and consequently biomass yield.

A Novel and Potentially Multifaceted Dehydroascorbate Reductase Increasing the Antioxidant Systems is Induced by Beauvericin in Tomato

“…SBPase is a key enzyme in the Calvin cycle, the primary pathway for carbon fixation in higher plants. It catalyzes the dephosphorylation of sedoheptulose-1,7-bisphosphate to sedoheptulose-7-phosphate; this reaction is crucial because at this point assimilated carbon can be used to regenerate ribulose 1,5-bisphosphate or to synthesize sucrose, starch, isoprenoid, or shikimic acid derivatives in the dark phase [44]. Therefore, it can be speculated that the novel DHAR may increase ASC pool by two different mechanisms, i.e.…”

Feeding the world: improving photosynthetic efficiency for sustainable crop production

“…Although the regulation of photosynthesis has received attention (Heyneke and Fernie, 2018), it has not been thoroughly exploited for the realization of increased yield potential, and there is still a gap in the knowledge of the fine detail and speed of Trx-mediated redox regulation of photosynthesis. Nevertheless, given the results observed with overexpression of Trx f and NTRC, it would be interesting to investigate whether it would be possible to optimize some of these other redox regulatory mechanisms for increased yield under modern agricultural conditions.…”

From empirical to theoretical models of light response curves - linking photosynthetic and metabolic acclimation

“…In order to optimize fitness and yield, plants acclimate to the environmental conditions to which they are exposed. Plant acclimation strategies in response to different environmental conditions include changes in photosynthesis and metabolism (Bassham 1971;Walters 2005;Heyneke and Fernie 2018;Herrmann et al 2019). Photosynthesis converts inorganic carbon (CO 2 ) into organic carbon compounds, using light energy.…”