Computational Analysis of Alternative Photosynthetic Electron Flows Linked With Oxidative Stress.

ABSTRACT: During photosynthesis, organisms respond to their energy demand and ensure the supply of energy and redox equivalents that sustain metabolism. Hence, the photosynthetic apparatus can, and in fact should, be treated as an integrated supply-demand system. Any imbalance in the energy produced and consumed can lead to adverse reactions, such as the production of reactive oxygen species (ROS). Reaction centres of both photosystems are known sites of ROS production. Here, we investigate in particular the central role of Photosystem I (PSI) in this tightly regulated system. Using a computational approach we have expanded a previously published mechanistic model of C3 photosynthesis by including ROS producing and scavenging reactions around PSI. These include two water to water reactions mediated

SUBMITTER: Saadat NP 

PROVIDER: S-EPMC8569387 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature