OBF1 — Triticum aestivum

Summary

TRAESCS1A02G072600 (TaOBF1, also known as TaLIP19-1A or TaBZIP53-1A) on wheat chromosome 1A encodes a bZIP domain-containing protein with DNA-binding, protein homodimerization and heterodimerization activities, and kinase binding. In bread wheat, TaOBF1 is associated with cold stress tolerance and cold acclimation, and is linked to responses to abiotic and biotic stimuli, abscisic acid, glucose, sucrose, and starvation. It localizes to both the cytoplasm and nucleus and is associated with positive regulation of seed maturation, embryogenesis, and circadian clock entrainment. Associations with grain filling period, seedling growth, root thickness, leaf trichome density, and carbohydrate, fructose, and sucrose content have been reported. Studies of related bZIP family members in other species link this gene family to freezing and drought tolerance, seed maturation, and grain size and number.