CAT1 — Oryza sativa Indica Group

Summary

BGIOSGA023636 (CAT1, CATB) on chromosome 6 of Indica rice encodes a catalase (EC 1.11.1.6) with haem-binding and S-nitrosylase activity, and is also annotated with nucleoside diphosphate kinase, histone acetyltransferase, and protein kinase activities. The gene is associated with cellular oxidant detoxification, cell redox homeostasis, responses to hydrogen peroxide, superoxide, heat, xenobiotic stimuli, oomycetes, and sulfate or nitrogen starvation, as well as regulation of ethylene signalling and photoperiodism. Its product localises to the peroxisomal lumen, tonoplast, chloroplast envelope, stroma, stromule, apoplast, and cell wall. CAT1 has been connected to numerous agronomic traits including seed yield, grain filling, biomass, photosynthetic rate, root length and thickness, leaf chlorosis, cadmium concentration, nitrate uptake, auxin sensitivity, chilling tolerance, disease tolerance, and stomatal closure. Related genes in other species are linked to catalase activity, peroxisomal function, disease resistance, and programmed cell death.