ABF1 — Oryza sativa Japonica

Summary

OsABF1 (also known as DPBF1, OsAREB2, OsABI5, and OsABF4) on rice chromosome 3 encodes a DNA-binding transcription activator with additional annotated molecular functions including aromatic aminotransferase, calcium-dependent protein kinase, and protein phosphatase regulator activities. The gene is associated with abscisic acid signalling and abscisic acid-induced growth arrest, as well as leaf senescence, abiotic stress responses, and signal transduction. It has been linked to the regulation of seed dormancy, chlorophyll breakdown, root system development, C4 photosynthesis, TOR signalling, and nitrogen fixation. Associations with agronomic traits include seed length, seed protein content, endosperm storage protein content, inflorescence length, vegetative vigor, leaf elongation rate, and responses to drought, salinity, cold, iron, copper, and manganese. Studies of related genes in other species link the family to drought tolerance, biomass, tuber yield, and seed longevity.