HY5 — Triticum aestivum

Summary

TRAESCS3A02G128900 (HY5, also known as TaBZIP48-3A) on bread wheat chromosome 3A encodes a bZIP transcription factor with DNA-binding transcription activator activity, RNA polymerase II-specific, and is associated with nuclear import signal receptor activity, phytochrome binding, and red/far-red light photoreceptor activity. The gene is associated with regulation of phytochrome signaling, upregulation of photosynthesis and lateral root development, positive regulation of anthocyanin metabolism, nitrate import, cellular water homeostasis, and sucrose-mediated signaling. It is linked to traits including light quality response, UV-A and blue light sensitivity, seedling cotyledon size, root system morphology, vegetative vigor, leaf area, osmotic adjustment capacity, nitrate content, total soluble sugar content, brassinosteroid content, and seed coat hardness. Related genes in other species are linked to hypocotyl elongation, salt stress tolerance, and photoperiod-dependent flowering.