In this study, stress-related gene expression levels and the concentrations of malondialdehyde (MDA) and hydrogen peroxide (H₂O₂), which are oxidative stress markers, were investigated in the chickpea (Cicer arietinum) plant’s roots that are exposed to cadmium (Cd). MDA and H₂O₂ concentrations showed a linear increase. It was found that metallothionein-like gene (MT2) stress genes had a high level of expression at the 12-h application, while the kinetics of expression levels of glutathione reductase (GR1) and superoxide dismutase (Cu-Zn/SOD) genes increased until 24 h of application with a decrease in expression levels by 48 h of application. It has been observed that catalase (CAT) continues to be expressed at 24 and 48 h of Cd exposure. This study found that the expression of stress-related genes can be related to the oxidative status of the cell and the H₂O₂ concentration in the mechanism of signalization. This may up-regulate the expression of the stress genes until a certain concentration degree, while a higher concentration of H₂O₂ may down-regulate the gene expressions. The findings of this study may contribute to further oxidative signalling studies.