An Ecological Analysis of the Herbivory-Elicited JA Burst and Its Metabolism: Plant Memory Processes and Predictions of the Moving Target Model
Figure 8
Early JA-Ile accumulations and later TPI activity in leaf sectors elicited once and five times reveals the proportionally of the responses.
Increases in TPI activity (right column) in response to a single elicitation (open circles on dotted lines) are proportional to early increases in JA-Ile accumulation (left column): TPI activity differs among laminal sectors, with SE* having significantly higher TPI activity than SO and SB (Fisher's PLSD, P<0.05) and marginally significantly higher TPI activity than ST (Fisher's PLSD, P = 0.10). However, TPI activities after 5 successive elicitations (1 per h; solid squares on solid lines) do not differ significantly among SB, SE*, and ST (ANOVA, F = 0.48, P = 0.63), although all values are higher than those elicited by a single elicitation in the respective laminal sectors. In SO, only 1 of the 68 analyzed sectors contained detectable JA-Ile and TPI activity did not differ from un-induced levels. Values represent JA-Ile or TPI activity mean±S.E. (n = 4 and 5, respectively).