Effects of Brassinosteroid on Antioxidant System in Salvia miltiorrhiza Under Drought Stress
نویسندگان
چکیده
The roots of Salvia miltiorrhiza are widely used in traditional Chinese medicine. In our study we investigated the effects of brassinosteroid on drought resistance in S. miltiorrhiza using the method of measuring the antioxidant enzyme activity (SOD, CAT, POD) of S. miltiorrhiza seedling under drought stress after spaying different levels of brassinosteroid. The results showed that after spraying BR and proceeding with drought stress to S. miltiorrhiza seedling, the antioxidant enzyme activity (SOD, CAT, POD) and Pro content increased significantly, while the MDA content decreased significantly. Especially with the treatment of 0.1 mg/l brassinosteroid, the activity of SOD, CAT and the content of Pro raised to the highest level, while the MDA content reached its lowest point in our experiment. Our study suggested that the ameliorative effects of BR on drought resistance of S. miltiorrhiza seedlings were positive.
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