Evolutionarily distinct carotenoid cleavage dioxygenases are responsible for crocetin production in Buddleja davidii
2017
Ahrazem El Kadiri, Oussama | Diretto, Gianfranco | Argandoña Picazo, Javier | Rubio Moraga, Ángela | Julve, José Manuel | Orzaez, Diego | Granell Richart, Antonio | Gómez Gómez, María Lourdes
Crocetin, one of the few colored apocarotenoids known in nature, is present in flowers and fruits and has long been used medicinally and as a colorant. Saffron is the main source of crocetin, although a few other plants produce lower amounts of this apocarotenoid. Notably, Buddleja davidii accumulates crocetin in its flowers. Recently, a carotenoid dioxygenase cleavage enzyme, CCD2, has been characterized as responsible for crocetin production in Crocus species. We searched for CCD2 homologues in B. davidii and identified several CCD enzymes from the CCD1 and CCD4 subfamilies.
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