ARF — Beta vulgaris subsp. vulgaris

Summary

BvARF (BVRB_6G127430) on sugar beet chromosome 6 encodes a small GTPase of the Arf1-5-like family, with annotated molecular functions including G protein activity, phosphatidylinositol kinase activity, phospholipase activator activity, and actin binding. The gene is associated with vesicle-mediated transport to the plasma membrane, ER-to-Golgi transport, protein retention in the ER lumen, and regulation of auxin metabolism. It is linked to numerous agronomically relevant traits including biomass yield, water use efficiency, root mass density, days to flowering, leaf senescence, stomatal resistance, and responses to low temperature, oxidative stress, abscisic acid, and ethylene. Additional associations include phototropism, blue light signaling, leaf vascular tissue pattern formation, and phloem transport. Related genes in other species link the family to vesicular transport, auxin transport, and PIN recycling.