CS2 — Arabidopsis thaliana

Summary

AT3G09640 (APX2, also known as CS2 or ASCORBATE PEROXIDASE 1B) on chromosome 3 of thale-cress encodes a cytosolic L-ascorbate peroxidase 2 (EC 1.11.1.11), a haem peroxidase of the Ccp1-like family. The gene is associated with the ascorbate-glutathione cycle, cellular response to oxidative stress, nonphotochemical quenching, the xanthophyll cycle, and protein oxidation. It has been linked to light stress tolerance and wound-induced stress response. Associations also include heat stress memory, thermotolerance, photo-oxidative stress response, systemic acquired acclimation, water-use efficiency, seed production, bacterial blight disease resistance, viral disease response, aphid response, and traits such as relative chlorophyll content, shoot fresh weight, germination rate, and days to flowering. The encoded protein localises to the cytosol, stress granule, chloroplast stroma, plasmodesma, and plant-type cell wall.