Effect of DHEA on the growth and development of root system of Arabidopsis seedling

The Arabidopsis seeds were treated with DHEA to observe the alteration of root elongation and redox state of Arabidopsis seedings. The results showed that the primary root length was 80% of the control and the glucose-6-phosphate dehydrogenase activity decreased; the H2O2, MDA and GSH contents increased; the activity of T-SOD and POD was improved, although CAT activity reduced. These results suggested that the activity of G6PD was inhibited by DHEA, resulted in oxidative stress and inhibition of primary root growth in Arabidopsis seedlings.