Figure 3.

Inhibition of elicitor-induced accumulation of proteinase Inh I by SNP. Excised tomato plants were supplied through the stem with phosphate buffer alone (control) or with 1.0 mm SNP for 1 h and were transferred for 30 min to 25 nm systemin, 250 μg mL⁻¹ OGA, and 100 μm JA in phosphate buffer as described in “Materials and Methods.” After each treatment, plants were incubated in water for 24 h and were then immunologically assayed for proteinase Inh I content in leaf juice. Data are means ± sd; n = 6.