High anthocyanin accumulation in an Arabidopsis mutant defective in chloroplast biogenesis

Anthocyanin has an important antioxidant protective effect on plant resistance to oxidative stress. In this study, an Arabidopsis mutant dpg1 (delayed pale-greening) with a chloroplast development defect was studied. It was found that the anthocyanin accumulation of this mutant had increased during the seedling stage, and the expressions of the anthocyanin biosynthetic and regulatory genes were up-regulated. Further studies showed that exogenous...