Probably mediates the hydrolysis of some nucleoside diphosphate derivatives (By similarity). May be involved in plant immunity and act as a positive regulator of defense response through salicylic acid (SA) signaling (PubMed:25436909). Expressed in roots, stems and, at lower level, leaves. Circadian regulation with a peak after 8 hours of light. Induced by abscisic acid (ABA). Down-regulated by salicylic acid (SA). Small and stunted plant phenotype when grown on 12/12 hour photoperiod light. No visible phenotype when grown under short or long day light (8/16 hours or 16/8 hours of light/dark). Belongs to the Nudix hydrolase family.