DHAR — Pisum sativum

Summary

PsDHAR (PSAT3G101760) on garden pea chromosome 3LG5 encodes a dehydroascorbate reductase, an enzyme with dehydroascorbate reductase, glutathione transferase, and copper-binding activities, belonging to the DHAR1/2/3/4 family. The gene is associated with ascorbate metabolism, the ascorbate-glutathione cycle, cellular oxidant detoxification, protein glutathionylation, and regulation of the symbiotic process. It is linked to seed longevity, oxidative stress tolerance, drought stress tolerance, and abiotic stress tolerance, as well as traits including seed weight, starch content, protein content, chlorophyll content, photosynthetic rate, and hydrogen peroxide content. The encoded protein localises to multiple compartments including the chloroplast stroma, mitochondria, cytosol, nucleus, apoplast, and plant-type vacuole. Studies of related genes in other species link the family to drought tolerance and aluminum tolerance.