Finding Noemi: The Transcription Factor Mutations Underlying Trait Differentiation Amongst Citrus

A recent study by Butelli et al. ( Curr. Biol. 2019;29:158–164) has demonstrated that the linked traits of exceptionally low fruit acidity and the absence of anthocyanins in leaves and flowers and proanthocyanidins in seeds of the citrus are the result of mutations in the Noemi gene encoding a bHLH transcription factor