CAT1 — Triticum turgidum subsp. durum

Summary

TRITD6AV1G007920, designated CAT1 on durum wheat chromosome 6A, encodes a catalase core domain-containing protein with EC 1.11.1.6 activity. It is associated with cellular oxidant detoxification, hydrogen peroxide and superoxide responses, nitric oxide homeostasis, and S-transnitrosylation. The gene product localises to the peroxisomal lumen and is linked to peroxisome targeting. CAT1 has been connected to numerous agronomic traits including grain filling period, seed yield, biomass yield, photosynthetic rate, leaf chlorosis, disease tolerance, low temperature stress response, and auxin sensitivity. It is also associated with programmed cell death, chloroplast development, and stomatal closure. Related genes in other species are linked to catalase activity, UV-C-induced programmed cell death, and peroxisomal protein import, as well as cold and osmotic stress tolerance.