Abstract
Plant glutathione S-transferases (GSTs) are important for protecting plants against oxidative damage. We studied the function of a glutathione S-transferase family protein in Arabidopsis, AtGSTF2. Our results indicate the transgenic plants showed increased tolerance to oxidative stress caused by application of phenol. Under phenol stress, the lipid hydroperoxidation [the production of malondialdehyde (MDA)] of the leaves in overexpressing lines was suppressed compared with that of control plants. The antioxidative enzyme activities (SOD and POD) were higher in transgenic plants than in control. Furthermore, the residual phenol in medium was decreased more in transgenic plants than in control plants. These results indicate overexpressing GST protein reduce the damage of lipid hydroperoxidation and oxidative damage caused by phenol. Our findings also provide a suitable remediation strategy for sites contaminated by phenol.
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