Modulation of AtMRP6 gene expression level determined by quantitative real-time PCR in response to different stress conditions. Variation of AtMRP6 gene expression in seedlings treated with different hormones (100 μM, 12-hr), after an oxidative stress (10 mM H2O2, 12-hr) or in roots of 3–4 week-old plants after Cd exposure (5 μM, 30-hr). (ABA: abscissic acid, GA: gibberillic acid, MJ: methyl jasmonate). Values from three independent experiments are expressed as percentage of control (untreated plants). (* : P < 0.05, t-test).