Overview: Anthocyanin Biosynthesis and flower color in Orychophragmus violaceus Anthocyanins are the pigments behind the rich spectrum of flower colors in many plants, with purple petals in particular signaling the active end of the flavonoid pathway. In Orychophragmus violaceus, a Brassicaceae species native to China, researchers have identified the gene OvANS (anthocyanidin synthase, also known…