DHAR — Brassica juncea

Summary

BJUA08G24760S (BjDHAR) encodes a dehydroascorbate reductase, an enzyme with glutathione transferase activity and copper binding capacity. It belongs to the DHAR1/2/3/4 family and contains glutathione S-transferase and thioredoxin-like domains. In Indian mustard, this gene is associated with the ascorbate-glutathione cycle, ascorbate metabolism, cellular oxidant detoxification, and responses to hydrogen peroxide and ozone. It is linked to pigment metabolism, pigmentation, protein glutathionylation, and positive regulation of salicylic acid-mediated signaling. Associations with agronomic traits include leaf relative water content, chlorophyll and carotenoid content, photosynthetic rate, seed weight, biomass yield, root length, and proline content. The gene is also associated with seed longevity, drought and abiotic stress tolerance, and mutualistic interaction with Piriformospora indica. It localizes to multiple compartments including cytosol, chloroplast stroma, mitochondria, apoplast, and nucleus.