ARF — Sorghum bicolor

Summary

SORBI_3004G027100 (SbARFB1B) on sorghum chromosome 4 encodes a small GTPase of the ARF/SAR family with GTPase activity, GTP binding, phospholipase activator activity, and metal binding. It is associated with intracellular protein transport, vesicle transport, auxin signaling and response, signal transduction, starch anabolism, and NO storage, and localizes to the Golgi complex and cytoplasm. Studies of related genes in other species link the ARF family to grain yield, seed weight and size, grain number, floret number, ear length, leaf angle, root length, rootless phenotype, potassium uptake, auxin content, seed germination, drought tolerance, and salt tolerance.