CAT — Medicago truncatula

Summary

MTR_3G115370 (CAT, MtCAT) encodes a catalase family protein with catalase core and haem-binding domains, annotated with nucleoside diphosphate kinase activity, heme binding, protein kinase activity, and DNA-binding transcription factor activity. It is associated with cellular oxidant detoxification, response to hydrogen peroxide and superoxide, cell redox homeostasis, phytochelatin anabolism, and systemic acquired resistance via salicylic acid signaling. The gene is linked to peroxisomal lumen localisation and also to the tonoplast, chloroplast envelope, and apoplast. Associations include biomass yield, seed yield, photosynthetic rate, water use efficiency, germination rate, plant height, root thickness, chlorophyll content, leaf chlorosis, disease tolerance, oxidative stress response, low temperature stress response, and salt tolerance. Related phenotypes include immunity-triggered cell death, programmed cell death, reactive oxygen species homeostasis, stomatal closure, and peroxisomal matrix protein import. Studies of related genes in other species link the family to catalase activity, peroxisomal function, disease resistance, and hypersensitive cell death.