ART1 — Oryza sativa Indica Group

Summary

BGIOSGA004888 (ART1, also known as OiSTOP2, STOP1, or BHLH033) on chromosome 1 of Indica rice encodes a C2H2-type zinc-finger transcription factor belonging to the STOP1/2 family, with DNA-binding and transcription regulator activity. ART1 is associated with aluminum resistance and tolerance, acid soil tolerance, and proton rhizotoxicity tolerance. It has been linked to citrate secretion, cellular responses to oxygen levels and hypoxia, hydrogen peroxide response, detoxification, and homeostasis. The gene is connected to chlorophyll fluorescence, stomatal resistance, and regulation of flowering time under short-day and long-day conditions. Associations also include root growth, cell elongation, phosphate starvation response, drought tolerance, salt tolerance, and calcium deficiency tolerance. The protein localizes to the nucleus. Studies of related genes in other species link the family to aluminum tolerance, phosphorus efficiency, and root development under phosphate starvation.