GIF1 — Sorghum bicolor

Summary

SORBI_3005G187500, designated SbGIF1, encodes a protein containing an SS18_N domain and exhibits transcription coactivator activity and transcription cis-regulatory region binding. This sorghum gene on chromosome 5 is associated with diverse developmental processes including floral meristem determinacy, seed development, leaf and root development, and cell division. SbGIF1 is linked to responses to gibberellin, red and far-red light, and nematodes, as well as to nucleosome organization and chromatin modeling. The gene is associated with multiple agronomic traits including fruit yield, flowering time, leaf growth and senescence, root morphology, phosphorus uptake, and stress responses such as drought tolerance, salinity tolerance, and disease resistance. Its product localizes to the nucleus, cytoplasm, chloroplast envelope, and mitochondria. Studies of related genes in other species connect this gene family to organ size regulation, salt tolerance, and plant regeneration.