ABF2 (AT1G45249) — Arabidopsis thaliana

Summary

AT1G45249 (ABF2, also known as AREB1) encodes a bZIP transcription factor in Arabidopsis thaliana. The protein possesses sequence-specific DNA binding, transcription coactivator activity, and calcium-dependent protein kinase activity, and localizes to the nucleus, cytosol, and plasmodesmata. ABF2 is associated with regulation of seed maturation, and responses to water, cold, and far-red light. It is linked to chlorophyll a breakdown, flavone metabolism, and glucose-mediated signaling. The gene is associated with numerous agronomic traits including drought recovery, chilling stress response, photoperiod sensitivity, leaf water potential, hydrogen peroxide content, nitrate transport, potassium uptake, seed set percent, and vegetative vigor. Studies of related genes in other species link the ABF2 family to heat tolerance, photosynthesis, tuber induction, and nitrogen metabolism.