POD — Capsicum annuum

Summary

T459_15105 (POD) on pepper chromosome 5 encodes a secretory haem peroxidase with lactoperoxidase and peroxidase activities, classified as EC 1.11.1.7. The gene is associated with diverse biological processes including heat dissipation, nitrogen fixation, the ascorbate-glutathione cycle, oxidative phosphorylation, phytoalexin biosynthesis, root system development, nonphotochemical quenching, and regulation of hormone levels. Its product localises to the plant-type cell wall and extracellular space. POD is linked to numerous agronomically relevant traits such as fruit width and length, fruit weight, pungency, chilling stress response, salt response, relative chlorophyll content, net photosynthetic rate, water use efficiency, lignin content, carotenoid content, total soluble sugar content, root nitrogen content, and heterosis. Related genes in other species, including lignin-forming anionic peroxidase and PRX111, are linked to similar oxidative functions.