Figure 3.

Dose dependence of defense responses in tobacco cv BY cells treated with laminarin (A) or with oligogalacturonides (B). PAL activity (▫), LOX activity (⋄), SA accumulation (▵). An arbitrary value of 100 was given to the maximal induction level (see Fig. 2) of these defense markers in response to a saturating oligosaccharide concentration of 200 μg mL⁻¹. For each applied concentration of a given oligosaccharide, the relative inductions of the defense markers are given as a percentage of these maximal induction levels. Representative data from 1 of 3 replicates are presented.