Effect of Reflected Sunlight on Differential Expression of Anthocyanin Synthesis-Related Genes in Young Apple Fruit

Anthocyanin accumulation is responsible for the red color of skin apple fruits (Malus × domestica Borkh.). Environmental stimuli, such as light, temperature, soil factors, tree and application chemicals can alter synthesis anthocyanins. Herein, we examined expression genes related to anthocyanin biosynthesis in fruit cultivars, ‘Summer Prince’ ‘Arisoo’ at early stage development 60 DAFB (days after full bloom). The genes, which included structural regulatory involved biosynthesis, light-responsive was determined developed under effect sunlight exposure seven days. Apple were divided to: ‘reflected sunlight’, ‘bagged’, ‘control’ groups. levels synthesis-related significantly different among groups between shaded reflected sides. We also difference coloration patterns using colorimetric coordinates method. side quickly turned more redder almost similar that on exposed treatment. Strong correlation coefficients anthocyanin-related gene obtained. This study shows plays an important role stimulating by regulating during development. present assumes importance because fruits, generated through a non-transgenic approach would be acceptable consumers.