ABF1 (SORBI_3007G155900) — Sorghum bicolor

Summary

SORBI_3007G155900, designated SbABF1 on sorghum chromosome 7, encodes a bZIP domain-containing protein with DNA-binding transcription activator activity and additional annotated molecular functions including aromatic aminotransferase activity, calcium-dependent protein kinase activity, and protein phosphatase binding. The gene is associated with regulation of abscisic acid anabolism, positive regulation of TOR signaling, C4 photosynthesis, ear development, pre-harvest sprouting, and upregulation of chlorophyll breakdown. It is linked to traits including seed protein content, seed color, inflorescence length, vegetative vigor, leaf elongation rate, iron content, linoleic and linolenic acid content, sprouting tolerance, and responses to water stress, nitrogen, phosphorus, photoperiod, and light quality. Studies of related genes in other species link the family to abscisic acid signaling, drought stress, abiotic stress tolerance, panicle and flower development, and yield.