DCAR_014176 — Daucus carota subsp. sativus

Summary

DCAR_014176, designated GAI and also known as RGA2, DcDELLA1, and DELLA1 among other synonyms, encodes a DELLA protein on carrot chromosome 4. The product belongs to the GRAS transcription factor family and contains a DELLA_N domain. It is associated with gibberellin binding, phytochrome binding, and transcription corepressor binding, and has been linked to regulation of gibberellic acid-mediated signalling, response to karrikin, detection of light, and plant epidermis development. The gene is connected to numerous agronomic traits including root width, grain yield, flower number, fruit quality, leaf elongation rate, and total soluble sugar content. It is also associated with dwarfism, stress tolerance, root development, and longevity. Studies of related genes in other species link the family to thermomemory, gibberellin homeostasis, and abiotic stress tolerance.