CAT1 — Triticum turgidum subsp. durum

Summary

TRITD7AV1G275660, designated CAT1 on durum wheat chromosome 7A, encodes a catalase core domain-containing protein with annotated S-nitrosylase, histone acetyltransferase, and protein kinase activities. The gene is associated with cellular nitric oxide homeostasis, hydrogen peroxide response, and oxidant detoxification, as well as regulation of ethylene signaling and responses to heat, superoxide, and xenobiotic stimuli. Its product localizes to the peroxisomal lumen, tonoplast, chloroplast envelope, and apoplast. CAT1 is linked to agronomically important traits including grain filling period, seed yield, biomass yield, photosynthetic rate, leaf chlorosis, disease tolerance, and responses to low temperature, salinity, and nitrate uptake. Associations with programmed cell death, chloroplast biogenesis, and immunity-triggered autophagy are also noted. Related genes in other species are linked to stress response, disease resistance, and peroxisomal function.