ARF — Nicotiana attenuata

Summary

A4A49_57686 (ARF) in coyote tobacco (Nicotiana attenuata) encodes a small GTPase of the Arf1-5-like family, with GTPase activity, GTP binding, G protein activity and phospholipase activator activity. The gene is associated with auxin transport and signaling, vesicle transport, intracellular protein transport, nuclear import, chloroplast movement, stomatal movement, pollen germination, embryogenesis, lateral root development and formation, cell development, sexual reproduction, and homeostasis. It is linked to nicotine, alkaloid and anthocyanin anabolism, and to ethylene sensitivity. The encoded protein localises to the Golgi complex and cytoplasm. Studies of related genes in other species connect the family to leaf relative water content, leaf angle, fruit firmness, starch and sugar content, stem elongation, fruit size, leaf shape, stomatal resistance, organ identity, root length, chlorophyll content and plant height.