Figure 5.
Identification of major products of induced sesquiterpene synthase activity in clone II. Enzyme activity was assayed in extracts of needles harvested 30 h after MeJA treatment. GC-MS total ion chromatograph showing nine sesquiterpenes produced (A). Major products (peaks 2, 6, 8, and 9) were identified by comparison of retention time and mass spectra with authentic standards as (E)-β-farnesene (17.2%; B), (E,E)-α-farnesene (8.1%; C), (E)-α-bisabolene (30.3%; D), and nerolidol (33.8%; E).