Jasmonic acid signaling and glutathione coordinate plant recovery from high light stress.

ABSTRACT: High light (HL)-induced chloroplast retrograde signaling originates from the photosynthetic apparatus and regulates nuclear gene expression to enhance photoprotection and coordination of cell metabolism. Here, we analyzed the transcript profiles and accumulation of ROS, stress hormones, and small molecule antioxidants to investigate the signaling mechanisms operating under HL stress, particularly during plant recovery under growth light condition. Exposure of Arabidopsis (Arabidopsis thaliana) rosettes to HL for 15 min induced several 1O2- and H2O2-responsive genes and accumulation of an oxidized form of glutathione, the hallmarks of oxidative stress in cells. Prolonged exposure to HL resulted in accumulation of transcripts encoding oxylipin biosynthesis enzymes, leading to accumulation of

SUBMITTER: Kılıc M 

PROVIDER: S-EPMC12038154 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature