Fig. 3
Effects of NaHS on Cd accumulation, H2S content, lipid peroxidation, and antioxidant system under Cd stress. a Cd accumulation under different conditions in T. thermophila. b H2S contents in T. thermophila cells when the cells were treated by various conditions. c Effects of Cd and H2S on lipid peroxidation. d-f Cells in the logarithmic phase were grown in the medium with different treatments, and GSH content (d), SOD activity (e), and CAT activity (f) were measured. CK, S, S+HT, C, C+S, and C+S+HT correspond to the groups of cells exposed to nutrients only, at 70 μM NaHS, 70 μM NaHS+ 140 μM HT, 30 μM CdCl2, 30 μM CdCl2+ 70 μM NaHS, and 30 μM CdCl2+ 70 μM NaHS + 140 μM HT respectively. Data are means ± SE of three biological repeats, error bars indicate error standard. Means denoted by the same letter were not significantly different at P > 0.05, and different letters indicate statistically significantly differences (P < 0.05) by Duncan Multiple Range Test (DMRT)