CAT1 — Triticum aestivum

Summary

TRAESCS6D02G048300 (TaCAT1) on wheat chromosome 6D encodes a catalase enzyme (EC 1.11.1.6) with additional annotated molecular functions including S-nitrosylase, histone acetyltransferase, and nucleoside diphosphate kinase activities, and belongs to the catalase clade 1/3 family. The gene is associated with cellular hydrogen peroxide and nitric oxide homeostasis, oxidant detoxification, cell redox balance, and responses to superoxide, xenobiotic stimuli, and oomycete-derived molecules. TaCAT1 has been linked to agronomically important traits including grain yield, flour yellowness, heading time, stem length, tiller number, anther extrusion, biomass yield, and responses to high temperature and abiotic stress. It is also associated with programmed cell death, chloroplast development, auxin sensitivity, nitrate uptake, and jasmonic acid signaling pathways. The protein localizes to the peroxisomal lumen, chloroplast envelope, tonoplast, and apoplast.