897894.fig.001a
(a)
897894.fig.001b
(b)
897894.fig.001c
(c)
Figure 1: Chemical structures of the isoprenoid abscisic acid (a) and the conjugated linolenic acid stereo- or regioisomers punicic acid- (9Z, 11E, 13E-) octadeca-9, 11, 13-trienoic acid (b) and catalpic acid- (9E, 11E, 13Z-) octadeca-9, 11, 13-trienoic acid (c).