DHAR — Brassica napus

Summary

BnDHAR (DARMORV10_A08P29770.1) on chromosome A08 of oilseed rape encodes a dehydroascorbate reductase with glutathione transferase activity and copper binding capacity, belonging to the DHAR1/2/3/4 and glutathione S-transferase families. This gene is associated with the ascorbate-glutathione cycle, ascorbate metabolism, protein glutathionylation, cellular oxidant detoxification, and responses to hydrogen peroxide, ozone, jasmonic acid, and symbiotic fungi. It has been linked to leaf relative water content, net photosynthetic rate, proline content, stomatal resistance, and salt tolerance. Phenotypic associations include seed longevity, drought and abiotic stress tolerance, salicylic acid accumulation, glutathione and ascorbate redox state, and mutualistic interaction with Piriformospora indica. The protein localizes to the apoplast, vacuole, chloroplast stroma, mitochondria, cytosol, plasmalemma, and nucleus. Related genes in other species are linked to drought tolerance and aluminum tolerance.