DHAR1 — Zea mays

Summary

ZM00001EB355550 (DHAR1) on maize chromosome 8 encodes a dehydroascorbate reductase (EC 1.8.5.1) with glutathione transferase activity (EC 2.5.1.18), placing it in the DHAR1/2/3/4 family. The gene is associated with the ascorbate-glutathione cycle, xanthophyll cycle, cellular oxidant detoxification, superoxide release, and positive regulation of salicylic acid-mediated signaling. It is linked to phosphorus utilization, hemostasis, and responses to carbohydrate and thirst. Localized to the cytosol, DHAR1 has been connected to grain yield, harvest index, heterosis, drought and salinity tolerance, heat and cold tolerance, photosynthetic rate, water use efficiency, chlorophyll and carotenoid content, anthocyanin content, seedling height, leaf elongation rate, root dry weight and volume, shoot fresh weight, germination rate, and stomatal resistance.