CSD1 — Sorghum bicolor

Summary

SORBI_3007G166600 (SbCSD1) on sorghum chromosome 7 encodes a protein with a copper-zinc superoxide dismutase domain and copper binding and superoxide dismutase (EC 1.15.1.1) activity. The gene is associated with removal of superoxide radicals, reactive oxygen species homeostasis, and detoxification pathways. It has been linked to cellular responses to ozone, high light intensity, UV-B, sucrose, copper, and oxidative stress, as well as water transport, cellular water homeostasis, and salinity response. Associations with agronomic traits include seed width, seed length, seed size, photosynthetic rate, drought tolerance, bacterial blight disease resistance, and stomatal complex closure time. The product localizes to the thylakoid, chloroplast stroma, apoplast, cytosol, and plasmalemma. Studies of related genes in other species link the Cu/Zn SOD family to oxidative stress tolerance, salt and drought responses, and defense against fungal and bacterial pathogens.