ABF1 (SORBI_3004G309600) — Sorghum bicolor

Summary

SORBI_3004G309600 (SbABF1) on sorghum chromosome 4 encodes a bZIP domain-containing protein with DNA-binding transcription activator activity, along with annotated functions including aromatic aminotransferase, calcium-dependent protein kinase, and protein phosphatase regulator activities. The gene is associated with abscisic acid signalling, gibberellin signalling, and regulation of abscisic acid anabolism, as well as C4 photosynthesis, ear development, pre-harvest sprouting, and drought escape via an ABA-dependent pathway. It has been linked to traits including seed protein content, inflorescence length, vegetative vigor, leaf elongation rate, water stress response, photoperiod sensitivity, and sprouting tolerance. Studies of related genes in other species connect the ABF1 family to drought resistance, salinity stress, cold tolerance, yield, and root growth.