Figure 4. Expression of ONSEN (A) and TSI (B) transposons in F1 progeny of wild type (15D8) and mutant (dcl2, dcl3, and dcl4) plants exposed to heat and control plants. Y-axis shows arbitrary units of gene expression. “C₁” – the progeny of plants grown at normal conditions in F0. “S₁” – the progeny of plants exposed to heat in F0. “+” and “-” indicate exposure to stress or growth in uninduced conditions, respectively. Bars show standard deviation calculated from 3 technical repeats. Asterisks (*) indicate a significant difference between control (-) and stress (+) with the same parental treatment or between different treatments (C₁ vs S₁), as calculated using a t test (P ≤ 0.05).