About this Research Topic
Primary metabolism, including the Calvin-Benson assimilative cycle, is coordinated with PSI redox state by several mechanisms to adapt their respective activities to developmental and environmental cues. For instance, light and photosynthetic efficiency regulate gene expression and affect the redox states of stromal regulatory systems (e.g., thioredoxins) that are crucial in modulating the activity of enzymes of the Calvin-Benson cycle. On the other hand, metabolic reprogramming as a consequence of environmental stress conditions is linked with changes to stroma redox dynamics, which have a direct effect on PSI activity. Therefore, both primary metabolism and PSI activity are tightly connected and profoundly susceptible to unfavorable conditions. Thus, any event that triggers an uncoupling between PSI redox status and (photosynthetic) metabolism negatively affects plant fitness, growth, and yield.
This Research Topic aims to collect articles addressing the latest advances related to the crosstalk between PSI activity and metabolism in plants, algae, and cyanobacteria. Articles addressing the following subjects are especially encouraged:
• Efficiency and regulation of PSI electron transport activity
• Inhibition and repair of PSI
• PSI activity on metabolic outputs, aspects of photosynthetic electron transport, chloroplast redox/antioxidant networks, ROS production or chloroplast signaling
• Impact of altered photosynthetic metabolism on PSI activity, photosynthate production/allocation, and plant growth
• Effect of environmental perturbations and developmental status on metabolism and its influence on photosynthetic electron flow and PSI activity
• Genotypic variation on PSI activity and/or photosynthetic metabolic components with impact on development or growth
• Crosstalk between circadian regulation and PSI activity
• Impact of light quality, duration and variation on PSI activity and/or the allocation of energy between carbohydrate, ROS and growth
• Impact of metabolic status on the regulation PSI activity and/or the allocation of energy between carbohydrate/ROS and growth
• Impact of light sensing or signaling components on PSI activity and their effects on the downstream chloroplast redox network/metabolism
We welcome submissions of Original Research, Reviews and Mini Reviews, Perspectives, Opinions, Methods, or Hypothesis and Theory.
Image credit: Peter Gollan.
Keywords: Photosynthesis, Photosystem I, Primary metabolism, Environmental stress, Electron transport
Important Note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.