Cadmium (Cd) is one of the heavy metals whose presence in soil induces oxidative stress in plants. This investigation was conducted to determine the modifications in some biochemical traits of peppermint (Mentha piperita L.) under cadmium stress. Likewise, the expression of key genes involved in the biosynthesis of menthol and menthofuran, two significant components of peppermint’s essential oil, was measured. The expression of peppermint genes under cadmium stress was measured for the first time in this research. The chemical composition of its essential oil, that makes peppermint a valuable herb, was also analyzed to determine the content of the principal constituents. Menthol content dropped, and menthofuran and pulegone concentrations increased by augmenting Cd. Increasing Cd level in the soil was followed by a reduction in the expression of MR (menthone reductase) and PR (pulegone reductase) genes, while an increase in the expression of MFS (menthofuran synthase) was observed. Assessment of differences in some biochemical traits was performed additionally. Malondialdehyde, hydrogen peroxide and proline contents dilated along with the antioxidant capacity. The total protein content decreased, while peppermint responded to Cd stress by increased activity of catalase, ascorbate peroxidase and polyphenol oxidase enzymes.

镉（Cd）是重金属之一，其在土壤中的存在会诱导植物产生氧化胁迫。进行这项研究是为了确定薄荷（Mentha piperita）的一些生化特性的改变。L.）在镉胁迫下。同样，测定了薄荷醇和薄荷醇的生物合成中涉及的关键基因的表达，薄荷醇和薄荷醇是薄荷精油的两个重要组成部分。本研究首次测量了镉胁迫下薄荷基因的表达。还分析了其精油的化学成分，使薄荷成为有价值的草药，以确定主要成分的含量。薄荷的含量下降，薄荷脑中的薄荷醇和薄荷的浓度通过增加镉而增加。土壤中Cd含量升高，其次是MR（薄荷酮还原酶）和PR（pulegone还原酶）基因的表达减少，而MFS的表达增加观察到（薄荷脑呋喃合酶）。另外评估了一些生化特征的差异。丙二醛，过氧化氢和脯氨酸的含量随抗氧化能力的增加而增加。总蛋白含量降低，而薄荷通过增加过氧化氢酶，抗坏血酸过氧化物酶和多酚氧化酶的活性来响应镉胁迫。