Figure 4.

Expression of sulphur metabolism genes in response to cesium. Gene expression in roots (A) and shoots (B) of the wild type (Col-0) grown on media containing 1.75 mM potassium (K) and 0.3 mM cesium (Cs) with or without 2 mM sulphate (S) for eight days. Values are log₂ ratios relative to expression in the control seedlings grown in the absence of cesium (1.75 mM K + 0.75 mM S). Statistically significant differences were determined by one-way ANOVA with Bonferroni’s multiple comparison posttest (n = 3, * for P < 0.05, ** for P < 0.01).