CAT1 — Oryza sativa Indica Group

Summary

BGIOSGA011520 (CAT1) in Indica rice encodes catalase isozyme C, a haem-binding enzyme (EC 1.11.1.6) with additional annotated activities including S-nitrosylase, nucleoside diphosphate kinase, and histone acetyltransferase functions. The gene is associated with cellular oxidant detoxification, hydrogen peroxide and superoxide responses, nitric oxide homeostasis, and S-transnitrosylation. It is linked to peroxisomal localisation and to traits including seed yield, grain filling period, biomass yield, photosynthetic rate, cadmium concentration, leaf chlorosis, root length, seedling growth, reproductive period, and responses to low temperature, nitrate, and biotic and abiotic stresses. Associations with programmed cell death, immunity, drought tolerance, water use efficiency, and chloroplast development have also been noted. Studies of related genes in other species connect catalases to peroxisomal function, disease resistance, and stress responses.