Transcription factor. Binds to a 5'-CGTTGACCGAG-3' consensus core sequence which contains a W box, a frequently occurring elicitor-responsive cis-acting element. Expressed to similar levels in root and flower, to a somewhat lower level in stem and to low levels in leaf and siliques. By salicylic acid (SA). Binding to target DNA is mediated mainly by the C-terminal WRKY domain, while part of the activation domain is located between positions 210 and 285. Belongs to the WRKY group I family.