FIGURE 6.

Effect of ABA and GA₃ applications on ABA metabolites contents in roots of Moneymaker tomato plants non-colonized (NI) or colonized with R. irregularis (I). After 1 week of transplanting and inoculation with R. irregularis, a set of tomato plants (control) were treated with 0.1% ethanol solution, and three sets of plants were treated with ABA, GA₃, and GA₃+ABA. GA3 (5 μM) and ABA (75 μM) solutions were applied to soil twice per week, and plants were harvested 50 days after inoculation. Products for ABA hydroxylation and ABA glycoxidation are shown. Values correspond to mean ± SE (n = 3), and bars with the same letter are not significantly different (P = 0.05) according to Duncan’s multiple range test.