Improved photorespiration has a major impact on the root metabolome of Arabidopsis.

ABSTRACT: Photorespiration is an essential metabolic repair process in oxygenic photosynthesis, as it detoxifies Rubisco's inhibitory oxygenase byproduct, 2-phosphoglycolate (2-PG). It has been demonstrated that improving endogenous photorespiration in C3 plants through enzyme overexpression can enhance photosynthesis and promote plant growth. However, the potential impact of improved photorespiration in leaves on heterotrophic roots remained unexplored. To address this, we conducted a metabolome analysis of Arabidopsis leaves and roots using transgenic lines with enhanced glycine decarboxylase (GDC) activity, achieved by overexpressing the mitochondrial lipoamide dehydrogenase (mtLPD1) subunit. In the leaves, mtLPD1 overexpression primarily resulted in reduced steady-state levels of intermediates a

SUBMITTER: Timm S 

PROVIDER: S-EPMC11876089 | biostudies-literature | 2025 Mar-Apr

REPOSITORIES: biostudies-literature