Acts as a transcriptional activator. Binds to the GCC-box pathogenesis-related promoter element. Involved in the regulation of gene expression by stress factors and by components of stress signal transduction pathways. Ubiquitously expressed after ethylene treatment. Strongly induced by wounding. Induced by Pseudomonas syringae tomato (both virulent and avirulent avrRpt2 strains), independently of PAD4. Also induced by methyl jasmonate (MeJA) independently of JAR1, but seems to not be affected by ethylene. Induction by salicylic acid (SA) is controlled by growth and/or developmental conditions, and seems to be more efficient and independent of PAD4 in older plants. Belongs to the AP2/ERF transcription factor family. ERF subfamily.