A dipeptide conjugate of jasmonic acid, [N-( )-jasmonoyl]-Lalanyl -L-leucine, was prepared and its biological activities were investigated. The conjugate was active in the emission of linalool from rice leaves, while [N-( )-jasmonoyl]-D-alanyl-L-leucine was not. Neither conjugate was active in the production of sakuranetin. This is the first report of a biologically active dipeptide conjugate o...