CAT1 — Solanum lycopersicum

Summary

SlCAT1 (SOLYC02G082760.3) on tomato chromosome 2 encodes a catalase family protein, characterized by catalase haem-binding and active-site domains, and is associated with multiple molecular functions including nucleoside diphosphate kinase activity, heme binding, protein kinase activity, and DNA-binding transcription factor activity. The gene is linked to cellular response to hydrogen peroxide, nonphotochemical quenching, proline metabolism, and regulation of hormone levels, and localizes to the peroxisomal lumen, tonoplast, apoplast, and plasmodesmata. SlCAT1 has been connected to agronomically important traits including biomass yield, seed yield, photosynthetic rate, chlorophyll content, root volume, plant height, germination rate, and responses to oxidative stress, low temperature, and disease. Studies of related genes in other species link the catalase family to drought tolerance, salt tolerance, oxidative stress tolerance, and hypersensitive cell death.