GR — Capsicum annuum

Summary

CaGR (T459_08909) on pepper chromosome 3 encodes a glutathione-disulfide reductase, a member of the GSHR/TRXR-like family with FAD/NAD-binding domains. The enzyme exhibits glutathione reductase, thioredoxin reductase (NADPH), leghemoglobin reductase, and dihydrolipoyl dehydrogenase activities, and binds NADP, FAD, copper, and ATP. CaGR is associated with the ascorbate-glutathione cycle, cellular redox homeostasis, glutathione metabolism, 2-oxoglutarate metabolism, glycine decarboxylation, mitochondrial protein import, and chlorophyll fluorescence. It localises to mitochondrial membranes, the glycine cleavage system, and chloroplast stroma. The gene is linked to ethylene sensitivity, photosynthetic rate, root morphology, and, through related genes in other species, to drought stress response, leaf senescence, stomatal aperture, embryo development, photosystem II function, and root apical meristem maintenance.