Improved photosynthetic capacity and photosystem I oxidation via heterologous metabolism engineering in cyanobacteria.

ABSTRACT: Cyanobacteria must prevent imbalances between absorbed light energy (source) and the metabolic capacity (sink) to utilize it to protect their photosynthetic apparatus against damage. A number of photoprotective mechanisms assist in dissipating excess absorbed energy, including respiratory terminal oxidases and flavodiiron proteins, but inherently reduce photosynthetic efficiency. Recently, it has been hypothesized that some engineered metabolic pathways may improve photosynthetic performance by correcting source/sink imbalances. In the context of this subject, we explored the interconnectivity between endogenous electron valves, and the activation of one or more heterologous metabolic sinks. We coexpressed two heterologous metabolic pathways that have been previously shown to positively im

SUBMITTER: Santos-Merino M 

PROVIDER: S-EPMC7980454 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature