ARF — Hordeum vulgare subsp. vulgare

Summary

HORVU.MOREX.R3.3HG0296260, designated HvARF, encodes a small GTPase of the Arf1-5-like family with GTPase activity, GTP binding, phospholipase activator activity and metal binding. The encoded protein localises to the Golgi complex and cytoplasm and is associated with ARF protein signal transduction, vesicle transport, intracellular protein transport, protein transport, protein phosphorylation, autophagy, callus formation, regeneration, embryogenesis, microsporogenesis, pollen development and response to thirst. HvARF is linked to IAA content, callus induction and grain size. Studies of related genes in other species connect the family to a wide range of agronomic traits including grain yield, grain weight, grain number, grain shape, seed size, spikelet number, spike type, plant height, tiller number, tiller angle, root number and length, anthesis time, chlorophyll content, starch and protein content, auxin content and sensitivity, and tolerance to salinity, drought, cold and stripe rust.