Transcription factor. Interacts specifically with the W box (5'-(T)TGAC[CT]-3'), a frequently occurring elicitor-responsive cis-acting element (By similarity). Regulates rhizobacterium B.cereus AR156-induced systemic resistance (ISR) to P.syringae pv. tomato DC3000, probably by activating the jasmonic acid (JA)- signaling pathway (PubMed:26433201). In young, mature and senescent leaves. Strongly during leaf senescence (PubMed:11722756). Repressed by rhizobacterium B.cereus AR156 in leaves, and to a lower extent, by P.fluorescens WCS417r (PubMed:26433201). Reduced rhizobacterium B.cereus AR156-induced systemic resistance (ISR) to P.syringae pv. tomato DC3000 associated with reduced jasmonic acid (JA)-mediated signal pathway. Plants lacking both WRKY11 and WRKY70 are totally impaired in B.cereus AR156-mediated ISR. Belongs to the WRKY group II-d family.