Jasmonates regulate light-induced patchoulol biosynthesis in <i>Pogostemon cablin</i>

Patchoulol, a primary component of patchouli oil which is extensively utilized in the fields of medicine, flavoring, and fragrances. Notably, previous research has indicated that light conditions significantly influence the accumulation of patchoulol in patchouli plants. In this study, we further investigated the hormone levels in patchouli under various light treatments, revealing a strong correlation between jasmonates and patchoulol biosynthesis. Both patchoulol and jasmonate biosynthesis were found to be light-dependent, exhibiting wavelength-specific responses within certain ranges showing similar trends. Additionally, gene expression analysis under light and dark conditions identified several candidate genes within the light and jasmonates signaling pathways. These findings provide a theoretical foundation for understanding the light-induced mechanisms of patchoulol biosynthesis and offer insights for advancing the patchouli industry.