Fig. 3.

Plot a: Factor loadings for individual herbivore-induced plant volatiles of Datura wrightii on PC1 and PC 2; Plots b–e: rejuvenated plants; Plots f–j: nonrejuvenated and herbivore-damaged plants. Mean (± standard error) factor scores for Principal Components 1 and 2 by trichome type, aeration date, and induction treatment. Triangles: uninduced plants; circles: MeJA-induced plants; squares: herbivore-damaged plants. Open symbols: sticky plants; filled symbols, velvety plants. Chemical abbreviations in Plot a: Cary: (E)-β-caryophyllene; DMNT: (E)-4,8,dimethyl-1,3,7 nonatriene; Far: (E, E)-α-farnesene; Hex Ac: (Z)-3-hexenyl acetate Hum: α-humulene; J: jasmone; Lim: limonene; Lol: linalool; Ner: nerolidol; Oci: (E)-β-ocimene; T: (E)-4-8,12 trimethyl-1,3,7,11 tridecatetraene. Overlapping near the origin: B: α-bergamotene; G: geranyl acetone; M: methyl salicylate; S: β-selinene