CAT1 — Triticum turgidum subsp. durum

Summary

TRITD5AV1G239720, also known as CAT1, encodes a catalase enzyme (EC 1.11.1.6) with additional annotated molecular functions including S-nitrosylase, nucleoside diphosphate kinase, and histone acetyltransferase activities. The protein localises to the peroxisomal lumen and is associated with cellular oxidant detoxification, hydrogen peroxide and superoxide responses, nitric oxide homeostasis, and cell redox regulation. In durum wheat, CAT1 is linked to numerous agronomic traits including grain filling period, seed yield, biomass yield, photosynthetic rate, vegetative growth time, reproductive period, leaf chlorosis, root thickness, and responses to abiotic stresses such as low temperature and salinity. The gene is also connected to disease tolerance, auxin sensitivity, nitrate uptake, and stomatal closure. Studies of related genes in other species associate the family with cold and osmotic stress tolerance, disease resistance, and peroxisomal function.