ART1 — Sorghum bicolor

Summary

SbART1 (SORBI_3007G166000) on sorghum chromosome 7 encodes a C2H2-type zinc-finger protein of the STOP1/2 family with sequence-specific DNA-binding and transcription regulator activity. The gene is associated with citrate secretion, cellular responses to oxygen levels and hypoxia, responses to acidic pH, hydrogen peroxide, aluminum, salinity, and both short-day and long-day flowering. It is linked to the regulation of vegetative-to-reproductive phase transition, sulfur metabolism, secretion, homeostasis, DNA repair, and tRNA metabolism. The protein localises to the nucleus. Phenotype associations include aluminum resistance, acid tolerance, drought tolerance, salt tolerance, low-oxygen tolerance, phosphate starvation response, root growth and cell elongation, potassium ion homeostasis, and calcium deficiency tolerance. Studies of related genes in other species link the family to aluminum tolerance, phosphorus efficiency, root development under phosphate starvation, malate secretion, and proton stress resistance.