Transcription factor that binds specifically to a 5'-AA[AG]G-3' consensus core sequence. Enhances the DNA binding of OBF transcription factors to OCS elements (By similarity). Involved in the regulation of root development (PubMed:23057675). The PEAR proteins (e.g. DOF2.4, DOF5.1, DOF3.2, DOF1.1, DOF5.6 and DOF5.3) activate gene expression that promotes radial growth of protophloem sieve elements (PubMed:30626969). Element of a regulatory network controlling indole glucosinolates (IGS) biosynthesis, probably by inducing the expression of accurate genes (e.g. CYP83B1). Promotes apical dominance (PubMed:16740150). Interacts with OBF4. Expressed in the vasculature (mainly in the phloem and associated cell files) of cotyledons, leaves, roots, flower stalks and petals (PubMed:10758484, PubMed:16740150, PubMed:23057675). The PEAR proteins (e.g. DOF2.4, DOF5.1, DOF3.2, DOF1.1, DOF5.6 and DOF5.3) form a short-range concentration gradient that peaks at protophloem sieve elements (PSE) (PubMed:30626969). In roots, confined to the central cylinder (vascular tissue and pericycle) of both main and lateral roots. In leaves, expressed in the vasculature, mostly in phloem cells. Also present in the vasculature of stems and in stamen filaments of flowers. Detected at low levels in the vasculature of petals and carpels. By auxin and salicylic acid (SA) (PubMed:10758484). Induced transiently in response to the generalist herbivore S.littoralis. Triggered by methyl jasmonate (MeJA) and wounding (PubMed:16740150). Reduced expression of CYP83B1. Longer hypocotyls and increased lateral root formation.