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The Arabidopsis F-box protein CORONATINE INSENSITIVE 1 (COI1) percepts jasmonate signal and subsequently recruits the jasmonate ZlM-domain proteins (JAZs)for degradation via the SCFCOI1-26S proteasome pathway to mediate various jasmonate (JA)-regulated plant responses including plant fertility, root growth, anthocyanin accumulation, senescence and defense.We recently revealed that JAZ proteins interacted with bHLH (TT8, GL3 and EGL3) and R2R3 MYB transcription factors(MYB75 and GL1), essential components of WD-repeat/bHLH/MYB transcriptional complexes, to repress JA-regulated anthocyanin accumulation and trichome initiation.We further demonstrated that the R2R3-MYB transcription factors MYB21 and MYB24 function as direct targets of JAZs to specifically regulate male fertility in Arabidopsis.We speculate that JAZs interact with these transcription factors to attenuate their transcriptional function.Upon perception of JA signal, COI1 recruits JAZs to the SCFCOI1 complex for ubiquitination and degradation through the 26S proteasome; these transcription factors are then released to activate expression of various genes essential for JA-regulated anthocyanin accumulation, trichome initiation and stamen development.