CAT3 — Brassica juncea

Summary

BJUA07G13400S (BjCAT3) on Indian mustard chromosome A07 encodes a catalase-family protein with catalase haem-binding and core domains, annotated with S-nitrosylase, nucleoside diphosphate kinase, histone acetyltransferase, DNA-binding transcription factor and protein kinase activities. It 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, oomycetes, sulfate and nitrogen starvation. Localisation evidence links it to the peroxisomal lumen, tonoplast, chloroplast envelope, apoplast and plant-type vacuole. Trait 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. Related genes in other species link the family to catalase activity, stress response, cell death regulation and pollen hydration.