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Updated: Apr 19, 2026

Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana
Published on: May 21, 2019
Autophagy controls carbon, nitrogen, and redox homeostasis in plants
1a INRA , Institut Jean-Pierre Bourgin, UMR 1318, Saclay Plant Sciences , Versailles , France.
Abstract:
During leaf senescence, autophagy is essential for nutrient recycling and remobilization, and for plant productivity. Metabolome and transcriptome studies performed on autophagy mutants revealed major disorders in nitrogen, carbon, and redox metabolisms. Analysis showed that autophagy mutants are depleted of antioxidant anthocyanin molecules. Transcriptome analysis revealed that the depletion of anthocyanin is due to the downregulation of the master genes encoding the enzymes and regulatory proteins involved in the flavonoid pathway. The hyperaccumulation of salicylic acid and the depletion of anthocyanin in autophagy mutants might result from the rerouting of carbon resources in the phenylpropanoid pathway and amplify oxidative stress in autophagy mutants.
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