CAT1 — Triticum turgidum subsp. durum

Summary

TRITD7BV1G229480, also known as TtCAT1, encodes a protein containing a catalase core domain, haem-binding site, and catalase superfamily domain. The enzyme exhibits multiple annotated molecular functions including S-nitrosylase, nucleoside diphosphate kinase, histone acetyltransferase, and heme-binding activities. TtCAT1 is associated with cellular oxidant detoxification, hydrogen peroxide biosynthesis, nitric oxide homeostasis, and responses to heat, superoxide, xenobiotic stimuli, and oomycete pathogens. It localizes to the peroxisomal lumen, chloroplast envelope, tonoplast, and apoplast. The gene is associated with grain filling period, seed yield, biomass yield, photosynthetic rate, osmotic adjustment, drought tolerance, chilling sensitivity, disease tolerance, and stomatal closure. Studies of related genes in other species link the catalase family to stress tolerance, immunity, and peroxisomal function.