PT — Capsicum annuum

Summary

CaPT (T459_27953) on pepper chromosome 11 encodes a metallocarboxypeptidase (EC 3.4.17.21) with a peptidase M28 domain and a TFR-like dimer domain, localised to the ER membrane and plasmalemma. The gene is associated with meristem cell maintenance, regulation of meristem size, photomorphogenesis, leaf vascular tissue pattern formation, flower and root development, embryo development ending in seed dormancy, plant organ senescence, regulation of seed maturation, negative regulation of gene silencing by miRNA, virus-induced PTGS, proteolysis, signal transduction, and defense response. It has been connected to drought tolerance, oxidative stress response, disease tolerance, and salt tolerance. Associations with shoot regeneration, root architecture, biomass accumulation, flowering time, leaf number, bolting time, senescence, stomatal development, seed production, and cytokinin levels have been reported. Studies of related genes in other species link the family to shoot apical meristem size, miRNA-mediated translational repression, cytokinin levels, disease resistance, and heat tolerance.