ARF — Beta vulgaris subsp. vulgaris

Summary

BvARF (BVRB_9G224030) on sugar beet chromosome 9 encodes a small GTPase of the ARF/SAR 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, Golgi organization, protein retention in the ER lumen, regulation of auxin metabolism, blue light signaling, chloroplast accumulation movement, phloem transport, and leaf vascular tissue pattern formation. It localizes to Golgi-associated vesicles, COPII-coated vesicles, the cis-Golgi network, early endosomes, and the ER membrane. Traits linked to BvARF include biomass yield, water use efficiency, root mass density, lateral root length, days to flowering, leaf senescence, phototropism, blue light sensitivity, viral disease response, oxidative stress response, and abscisic acid sensitivity. Studies of related genes in other species connect the family to vesicular transport, phototropism, chloroplast relocation, and stomatal aperture regulation.