Kojiro Yamamoto

Metabolism of L-threonate, an ascorbate degradation product, requires a protein with L-threonate metabolizing domains in Arabidopsis

This study identifies a plant-specific protein, LTD, essential for metabolizing L-threonate, an ascorbate degradation product, in Arabidopsis.

Dark-induced decrease in ascorbate levels in Arabidopsis leaves occurs independently of ascorbate peroxidase and oxidase, recycling enzymes, and senescence signaling

This study shows that dark-induced ascorbate loss in Arabidopsis occurs without requiring known oxidation/recycling enzymes or senescence signaling.