Repressor of jasmonate responses (By similarity). Involved in tolerance to salt and dehydration stresses (By similarity). Interacts with BHLH148. Interacts with COI1A and COI1B in a coronatine-dependent manner. Coronatine is an analog of jasmonoyl isoleucine (JA-Ile). The jas domain (115-140) is required for interaction with COI1. Ubiquitinated. Targeted for degradation by the SCF(COI1) E3 ubiquitin ligase-proteasome pathway during jasmonate signaling. Belongs to the TIFY/JAZ family.