An Ecological Analysis of the Herbivory-Elicited JA Burst and Its Metabolism: Plant Memory Processes and Predictions of the Moving Target Model
Figure 3
Accumulation of JA in elicited sectors after repeated elicitations is not strictly additive, but baseline JA and JA-Ile increase in discrete steps.
(A) Observed patterns of OS-elicited JA accumulation (triangles, solid lines) differ from those predicted from the addition of repeated single elicitations (x's, dotted lines). Arrows indicate time of elicitation (1 per h). The JA burst was suppressed after the 2nd elicitation, but returned after the 4th and 5th elicitations. (B) JA accumulation due to a single elicitation returned to a lower baseline level after the initial burst. The additive model in Panel A predicted that this baseline JA level would gradually increase to a saturated level as regular elicitations resulted in a regular pattern of JA bursts. However, observed baseline return levels of JA and JA-Ile 2 h after repeated elicitations (open bars) increased in discrete steps. All values represent JA or JA-Ile mean+S.E. (n = 4).