Jasmonic acid changes the composition of essential oil isolated from narrow-leaved lavender propagated in in vitro cultures.

The aim of the present study was to determine the effect of jasmonic acid added to the culture medium on composition of Lavandula angustifolia essential oils. The chemical composition was determined by gas chromatography coupled to mass detector (GC/MS). The experiment was conducted with the use of MS medium supplemented with increasing concentration of JA (0.2, 0.5, 1, 1.5 mg∙dm-3 ). It was found that the analysed essential oils varied in terms of chemical composition depending on the content of JA in the medium. All obtained essential oils were characterised by a high content of σ-cadinene (17.06-29.64%), borneol (6.66-17.47%), caryophyllene oxide (8.30-14.01%), τ-cadinol (4.87-9.16%), beta-caryophyllene (3.54-6.57%), 1.8-cineole (1.94-5.87%), β-pinene (1.48-3.05%), geranyl acetate (0.56-2.14%) and myrtenal (0.65-2.14%).