Crop Biotech Update

Radish Transcription Factor Activates Anthocyanin Production in Arabidopsis

January 6, 2016

Anthocyanins are flavonoid-derived pigments with strong antioxidant activity which are beneficial to humans. The team of Sun-Hyung Lim from the National Academy of Agricultural Science of Rural Development Administration in South Korea isolated RsMYB1, an anthocyanin promoting transcription factor (TF) from red radish (Raphanus sativus L.).

Expression of RsMYB1 in tobacco showed that it is a better positive regulator of anthocyanin production than another regulator, the basic helix-loop-helix (bHLH) TF gene B-Peru. Arabidopsis plants expressing RsMYB1 also produced red pigmentation throughout the plant, with upregulation of the eight genes related to anthocyanin production.

RsMYB1 is a positive regulator for anthocyanin biosynthesis in radish plants and it might be one of the best targets for improving anthocyanin production by single gene manipulation.

Read the article in Plant Cell Reports for more information.