DHAR — Brassica juncea

Summary

BJUB03G52010S (BjDHAR) encodes a dehydroascorbate reductase, a glutathione S-transferase family protein with copper-binding capacity. This Indian mustard gene on chromosome B03 is associated with the ascorbate-glutathione cycle, ascorbate metabolism, cellular oxidant detoxification, and reactive oxygen species metabolism. It is linked to pigment metabolism, pigmentation, protein glutathionylation, and positive regulation of salicylic acid-mediated signaling. Associations include leaf relative water content, chlorophyll and carotenoid content, photosynthetic rate, biomass yield, seed weight, root length, proline content, and salt tolerance. The gene is associated with seed longevity, drought and abiotic stress tolerance, and mutualistic interaction with Piriformospora indica. It localizes to the cytosol, chloroplast stroma, mitochondria, apoplast, nucleus, and plant-type vacuole. Related genes in other species are linked to ascorbate redox state, glutathione oxidation, and photooxidative stress tolerance.