CAT2 — Solanum tuberosum

Summary

PGSC0003DMG400029408, designated CAT2 (also known as CAT-1 or StCAT-1) on potato chromosome 12, encodes a catalase enzyme (EC 1.11.1.6) with catalase activity, heme binding, and metal binding functions. The protein belongs to the catalase family and is localized to the peroxisomal lumen, cytosol, cytoplasm, nucleus, and plasmalemma. CAT2 is associated with hydrogen peroxide catabolism, photorespiration, immune response, leaf senescence, seed germination, leaf development, cell death, programmed cell death induction, S-nitrosylation, fermentation, metabolic burst, RNA-directed DNA methylation, secondary metabolism, sucrose metabolism, and flavonoid anabolism. It is linked to traits including respiration rate, photosynthetic rate, drought tolerance, chilling injury tolerance, and fruit ripening. Studies of related genes in other species connect the family to additional traits such as osmotic adjustment, germination percentage, fruit fresh weight, and salt stress tolerance.