ABI4 (Abscisic acid insensitive 4) is a transcription factor involved in the regulation of gene expression by stress factors. Confers sensitivity to abscisic acid (ABA) and regulates the ABA signaling pathway during seed germination upon nitrate-mediated lateral root inhibition, in hexokinase-dependent sugar responses (including feed-back regulation of photosynthesis and mobilization of storage lipid during germination), and in response to osmotic stress mediated by NaCl, KCl or mannitol. Plays a role in sucrose sensing or signaling, especially at low fluence far red light. ABI4 gene is expressed most abundantly in developing sliliques and to a lesser degree in seedlings. Alternative names: ABSCISIC ACID INSENSITIVE 4, ABI4, GLUCOSE INSENSITIVE 6, GIN6, IMPAIRED SUCROSE INDUCTION 3, ISI3, SALOBRENO 5,SAN5, SUCROSE UNCOUPLED 6, SUN6, SUGAR INSENSITIVE 5, SIS5, ERF ABI4, Ethylene-responsive transcription factor ABI4, ERF052, At2g40220, T7M7_16, T7M7.16.