CS1 — Zea mays

Summary

ZM00001EB112040 (CS1/APX2) on maize chromosome 2 encodes a haem peroxidase of the haem peroxidase superfamily, with annotated activities including L-ascorbate peroxidase (EC 1.11.1.11), p-coumarate 3-hydroxylase, glycolipid binding, and siRNA binding. The gene is associated with processes such as thylakoid membrane disassembly, downregulation of photosynthesis, superoxide release, and glycine betaine anabolism, and localises to the peroxisome membrane, chloroplast thylakoid, and stress granules. It is linked to traits including kernel number per ear, cob weight, seedling height, leaf volume, stem dry weight, carotene content, chilling stress response, aluminum tolerance, and water-use efficiency. Phenotypic associations include ABA response, heat stress memory, photoprotection, seed germination, leaf senescence, and pathogen resistance. Related genes in other species are associated with high light stress tolerance, drought stress, and bacterial blight.