The group of Yuepeng HAN have found that a special R2R3-type transcription factor regulates if peaches of thePrunus persica (L.) Batsch variety, native to China, develop into yellow or blood-fleshed fruits. In white-fleshed fruits, the expression of this transcription factor PpMYB10.1 cannot be activated due to the lack of expression of a BL gene; in blood-fleshed fruits, BL acts with PpNAC1 to activate the transcription of PpMYB10.1, but their transactivation activity was repressed in the presence of the repressor PpSPL1.
CAS news release, March 27, 2015