CAT1 — Brassica juncea

Summary

BJUA08G24330S (symbol CAT1, also known as BjCAT3, SEN2, ROG1) on Indian mustard (Brassica juncea) chromosome A08 encodes a catalase family protein with haem binding, S-nitrosylase, nucleoside diphosphate kinase, histone acetyltransferase, DNA-binding transcription factor, and protein kinase activities. The gene is associated with hydrogen peroxide catabolism, cellular response to hydrogen peroxide and superoxide, regulation of programmed cell death, systemic acquired resistance, aerenchyma formation, and responses to sulfate and nitrogen starvation. It localises to the peroxisomal lumen, tonoplast, chloroplast envelope, apoplast, and plant-type cell wall. Associations include leaf chlorosis, biomass yield, photosynthetic rate, seed yield, water use efficiency, root length and thickness, stomatal closure, low-temperature stress response, disease tolerance, and salt tolerance. Studies of related genes in other species link the family to catalase activity, stress response, and cell death regulation.