Acts as a negative regulator in plant response to changes in environmental conditions through the control of ABA-regulated gene expression. Interacts with TIP/NAC091. Widely expressed in all tissues. Up-regulated by potassium deprivation, by salt stress, cold and treatment with exogenous abscisic acid (ABA). May be due to intron retention. Was originally thought to correspond to two different genes At5g63320 and At5g63330. Was originally thought to correspond to two different genes At5g63320 and At5g63330.