DHAR3 — Cicer arietinum

Summary

LOC101503639 (CaDHAR3) on chickpea chromosome 6 encodes a dehydroascorbate reductase with glutathione S-transferase activity, placing it in the DHAR1/2/3/4 family. The gene is associated with ascorbate metabolism, the ascorbate-glutathione cycle, and cellular oxidant detoxification. It is linked to seed germination, acquisition of seed longevity, and decreased seed longevity, as well as nodulation, nitrogen fixation, and positive regulation of salicylic acid-mediated signaling. Associations with drought tolerance, water use efficiency, net photosynthetic rate, chlorophyll content, photochemical quenching, stomatal resistance, proline content, and starch content have been reported. The encoded protein localizes to the chloroplast envelope, stroma, plastid, and cytosol. Studies of related genes in other species connect the family to seed viability, biomass yield, and stress tolerance traits.