Involved in defense response against fungal and bacterial pathogens (PubMed:24505423). Acts as negative regulator of jasmonate (JA) responses during infection by the soil-born fungal pathogen Verticillium longisporum (PubMed:24505423). Involved in abscisic acid-dependent stomata closure in response to infection by V. longisporum and Pseudomonas syringae (PubMed:24505423). May be a downstream component of brassinosteroid-mediated signaling (PubMed:24505423). Interacts with AGT1 in peroxisome under biotic stress conditions. Localizes to peroxisome under biotic stress conditions. Expressed in root meristems, vascular tissues, guard cells, trichomes, styles and receptacles. Induced by infection with the soil-born fungal pathogen Verticillium longisporum. No visible phenotype under normal growth conditions, but mutant plants exhibit increased susceptibility to the soil-born fungal pathogen Verticillium longisporum.