GO — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.5HG0517260 (HvGO, also known as HvPT, HvAMP1, or HvCOP2) on barley chromosome 5H encodes a metallocarboxypeptidase with peptidase M28 and TFR-like dimer domains. The enzyme exhibits carboxypeptidase and protein-binding activities. HvGO is associated with the regulation of seed maturation, meristem maintenance and determinacy, photomorphogenesis, leaf vascular pattern formation, root development, and plant organ senescence. It is linked to vitamin A and E anabolism, fatty acid oxidation, prenylation, proteolysis, and negative regulation of miRNA-mediated gene silencing. The gene has been connected to grain size, starch content, seed viability, biomass accumulation, dehydration resistance, flowering time, shoot regeneration, and leaf formation rate. The protein localizes to the endoplasmic reticulum and plasma membrane. Studies of related genes in other species link the family to shoot apical meristem size, cytokinin levels, and heat tolerance.