GPX1 — Sorghum bicolor

Summary

SORBI_3005G110442 (SbGPX1) on sorghum chromosome 5 encodes a protein with phospholipid-hydroperoxide glutathione peroxidase activity, glutathione peroxidase activity, peroxidase activity, and also carries domains associated with thioredoxin and calcium binding. The gene is associated with cellular oxidant detoxification, cellular water homeostasis, hypotonic salinity response, and regulation of stomatal opening and abscisic acid-mediated signalling. It has been linked to traits including seed yield, grain filling period, photosynthetic rate, vegetative vigor, days to flowering, anthocyanin content, and responses to low temperature, nitrate, and wheat powdery mildew. Associations also include oxidative stress tolerance, bacterial resistance, salt stress tolerance, and chloroplast redox homeostasis. Related genes in other species link the family to oxidative stress response, and to drought and cold stress tolerance.