Photosystem rearrangements, photosynthetic efficiency, and plant growth in far red-enriched light.

ABSTRACT: Arabidopsis plants were grown in white light (400-700 nm) or in white light supplemented with far-red (FR) light peaking at 730 nm. FR-enriched light induced the typical shade avoidance syndrome characterized by enhanced length of seedling hypocotyl and leaf petiole. FR supplementation also caused a noticeable decrease in the carotenoid and chlorophyll content that was attributable to a block of pigment accumulation during plant development. The carotenoid decrease resulted from a downregulation of their biosynthesis pathway rather than carotenoid degradation. The losses of photosynthetic pigments are part of structural and functional rearrangements of the photosynthetic apparatus. The plastoquinone pool was chronically more oxidized in plants acclimated to white + FR light compared to whi

SUBMITTER: Leschevin M 

PROVIDER: S-EPMC11658187 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature