CAT1 — Triticum turgidum subsp. durum

Summary

TRITD4BV1G185220, designated TtCAT1 on durum wheat chromosome 4B, encodes a catalase (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 redox homeostasis, hydrogen peroxide and superoxide responses, nitric oxide homeostasis, and S-transnitrosylation. TtCAT1 is linked to grain filling period, seed yield, biomass yield, photosynthetic rate, vegetative growth time, reproductive period, leaf chlorosis, chloroplast development, disease tolerance, abiotic stress responses, low temperature stress, stomatal closure, and auxin sensitivity. It is also linked to programmed cell death, immunity-triggered autophagy, chloroplast biogenesis, and drought tolerance. Related genes in other species are associated with cold and osmotic stress tolerance, disease resistance, and peroxisomal function.