Probably acts as a transcriptional activator. Binds to the GCC-box pathogenesis-related promoter element. May be involved in the regulation of gene expression by stress factors and by components of stress signal transduction pathways. Expressed in roots, seedlings, hypocotyl, inflorescence, siliques, and pistils. Also detected at low levels in leaves. Detected in inflorescence and youg floral mersitems, and in stem procambial cells. In floral mersitems, mostly expressed in the central dome. Disappears progressively from sepal primordia, but accumulates in second, third and fourth whorl organ primordia. Later, confined to occasional patches in stamens and in petal before disparearing progressively from flowers. Belongs to the AP2/ERF transcription factor family. AP2 subfamily.