Transcription factor involved in the regulation of osmotic stress responses and stomatal movement (PubMed:24773321). Interacts specifically with the W box (5'-(T)TGAC[CT]-3'), a frequently occurring elicitor-responsive cis-acting element (By similarity). Positive regulator of EDS1-dependent defense against E.amylovora (PubMed:22316300). Together with WRKY70 and WRKY53, promotes resistance to P.syringae, probably by enhancing salicylic acid (SA)- dependent genes. Contributes to the suppression of jasmonic acid (MeJA)-induced expression of PDF1.2 (PubMed:22325892). Together with WRKY54 and WRKY70, promotes brassinosteroid (BR)-regulated plant growth but prevent drought response by modulating gene expression (PubMed:28576847). Binds to BZR2/BES1 to cooperatively regulate the expression of target genes. Expressed in guard cells, hypocotyls, and in the vascular tissues of cotyledon and root (PubMed:24773321). Mostly expressed in roots, at lower levels in leaves and petioles, and, to a lower extent, in stems, flowers and siliques (PubMed:22325892). Up-regulated by drought, salt and hydrogen peroxide treatments (PubMed:24773321). Induced by salicylic acid (SA) (PubMed:22268143, PubMed:22325892). Up-regulated by E.amylovora (PubMed:22316300). Triggered by P.syringae (PubMed:22325892). Phosphorylated and destabilized by ASK7/BIN2. Decreased tolerance to dehydration and salt stress (PubMed:24773321). Increase in the number of necrotic leaves and in the intensity of necrosis in response to E.amylovora (PubMed:22316300). Increased susceptibility to P.syringae associated with reduced PR1 induction in double mutants wrky46 wrky70 and wrky46 wrky53, and triple mutant wrky46 wrky70 wrky53. In these mutants, higher induction of PDF1.2 upon jasmonic acid (MeJA) treatment (PubMed:22325892). The triple mutant wrky46 wrky54 wrky70 has defects in brassinosteroid (BR)-regulated growth and is more tolerant to drought stress (PubMed:28576847). Belongs to the WRKY group III family.