ARF — Nicotiana attenuata

Summary

A4A49_23687 (ARF) in coyote tobacco (Nicotiana attenuata) encodes a small GTPase of the ARF/SAR family, with annotated GTPase, protein kinase, and blue light photoreceptor activities, as well as phospholipase activator and FMN binding functions. The gene is associated with auxin transport, vesicle transport, cell polarization, nuclear import, and regulation of proton transport and stomatal movement. It is linked to nicotine, alkaloid, and anthocyanin anabolism, chloroplast accumulation movement, embryogenesis, lateral root development, and sexual reproduction. The protein localizes to the Golgi, cytoplasm, nucleus, plasma membrane, and plant-type vacuole. Associations include phototropism, blue light sensitivity, biomass yield, water use efficiency, ethylene sensitivity, viral disease response, leaf senescence, root traits, and flowering time. Studies of related genes in other species link the family to chloroplast relocation, stomatal aperture regulation, and phototropic growth.