ARF — Solanum tuberosum

Summary

StARF (PGSC0003DMG402024957) on potato chromosome 2 encodes a small GTPase of the Arf1-5-like family, with annotated molecular functions including G protein activity, phosphatidylinositol kinase activity, and phospholipase activator activity. This gene is associated with vesicle-mediated transport to the plasma membrane, ER-to-Golgi transport, Golgi organization, and protein retention in the ER lumen. It has been linked to auxin metabolism and anabolism, shoot morphogenesis, and anthocyanin anabolism. StARF is associated with numerous agronomically relevant traits, including biomass yield, water use efficiency, chlorophyll content, days to flowering, root mass density, lateral root length, stomatal resistance, and responses to low temperature, oxidative stress, ethylene, abscisic acid, and viral disease. It is also associated with phototropism, blue light sensitivity, leaf vein morphology, and leaf senescence. Related genes in other species are linked to fruit set, tuber sprouting, and abiotic stress tolerance.