CAT3 — Brassica juncea

Summary

BjCAT3 (BJUB03G35040S) on Indian mustard chromosome B03 encodes a catalase family protein with catalase haem-binding and core domains, and has been annotated with multiple molecular functions including S-nitrosylase, nucleoside diphosphate kinase, histone acetyltransferase, protein kinase, and DNA-binding transcription factor activities, as well as heme and metal binding. The gene is associated with hydrogen peroxide catabolism, cellular responses to hydrogen peroxide and superoxide, regulation of programmed cell death, systemic acquired resistance, aerenchyma formation, and responses to ethylene signaling, oomycetes, and sulfate or nitrogen starvation. It localises to the peroxisomal lumen, tonoplast, chloroplast envelope, apoplast, and plant-type vacuole. BjCAT3 is linked to leaf chlorosis, biomass yield, biotic plant stress trait, photosynthetic rate, seed yield, water use efficiency, vegetative growth time, chloroplast development, abiotic plant stress response, root length, stomatal complex closure time, low temperature stress response, root thickness, disease tolerance, and salt tolerance. Related genes in other species connect the family to catalase activity, stress responses, and cell death regulation.