I-Jasmonic acid, i-derivative of fatty acids, i-hormone yezitshalo etholakala kuzo zonke izitshalo eziphakeme.Itholakala kakhulu ezicutshini nasezithweni ezifana nezimbali, iziqu, amaqabunga, nezimpande, futhi idlala indima ebalulekile ekukhuleni nasekuthuthukeni kwezitshalo.Inemiphumela engokomzimba njengokuvimbela ukukhula kwezitshalo, ukuhluma, ukukhuthaza ukuguga, nokwenza ngcono ukumelana.