Redox regulation of NADP-malate dehydrogenase is vital for land plants under fluctuating light environment.

ABSTRACT: Many enzymes involved in photosynthesis possess highly conserved cysteine residues that serve as redox switches in chloroplasts. These redox switches function to activate or deactivate enzymes during light-dark transitions and have the function of fine-tuning their activities according to the intensity of light. Accordingly, many studies on chloroplast redox regulation have been conducted under the hypothesis that "fine regulation of the activities of these enzymes is crucial for efficient photosynthesis." However, the impact of the regulatory system on plant metabolism is still unclear. To test this hypothesis, we here studied the impact of the ablation of a redox switch in chloroplast NADP-malate dehydrogenase (MDH). By genome editing, we generated a mutant plant whose MDH lacks one of i

SUBMITTER: Yokochi Y 

PROVIDER: S-EPMC8017969 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature