Oxyipins, lipid-derived signaling molecales have important functions in plant development, reproducton and responses to external stimuli. Jasmonates (JAs),Caldehydes, and their corresponding deriatives prodaced y the twe main competing branches of the ervipin pathway, the allene eide sythase (109) d hydreperexide yase (HP) branches, respectively. These two branches share a sastantial everap in their rgubatory fanctieas Majority of experiments to define he rue of Calicyde in plant deetse respoases were restricted to external applicatie ef sldekyds r the egeeti taniptation of HPL expresion leves in pant geotpes with intact ahprace thecompeting A0Serìved metabolitex Te unceple the roles ef the Calichydes and jmoaten dating direct and ndirect plant-defense respomses e generated Arabidgs es acking eitherne or both of these metaboites These getpes were sabseqent hage h a phinem-eeting inset (phits rcas persicc) and the voatikes emitted by these pants pa aphid inftat mchanical woanding were characteriaed