2.2 Chemicals and reagents
Standards of geranyl pyrophosphate (GPP), farnesyl pyrophosphate (FPP), geraniol, (Z)-β-ocimene, and (E)-β-ocimene were purchased from Sigma-Aldrich (St. Louis, MO, USA). SYBR1 Premix ExTaq™II and PrimeScript RT Reagent Kit were purchased from TaKaRa (Dalian, China).