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Review
. 2015 Mar;20(3):176-85.
doi: 10.1016/j.tplants.2014.12.001. Epub 2015 Jan 8.

Transcriptional control of flavonoid biosynthesis by MYB-bHLH-WDR complexes

Wenjia Xu  1 , Christian Dubos  2 , Loïc Lepiniec  3
Affiliations
Review

Transcriptional control of flavonoid biosynthesis by MYB-bHLH-WDR complexes

Wenjia Xu et al. Trends Plant Sci. 2015 Mar.

Abstract

Flavonoids are widely known for the colors they confer to plant tissues, their contribution to plant fitness and health benefits, and impact on food quality. As convenient biological markers, flavonoids have been instrumental in major genetic and epigenetic discoveries. We review recent advances in the characterization of the underlying regulatory mechanisms of flavonoid biosynthesis, with a special focus on the MBW (MYB-bHLH-WDR) protein complexes. These proteins are well conserved in higher plants. They participate in different types of controls ranging from fine-tuned transcriptional regulation by environmental factors to the initiation of the flavonoid biosynthesis pathway by positive regulatory feedback. The MBW protein complexes provide interesting models for investigating developmentally or environmentally controlled transcriptional regulatory networks.

Keywords: MYB; WDR; bHLH; flavonoid; transcriptional network; transcriptional regulation.

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