Phylogenetic tree analysis of MnCCDs with the other species. Circle symbols of different colors represent the carotenoid cleavage dioxygenases (CCDs) of mulberry (MnCCDs), and the letter with the same color means the same subfamily. At, Arabidopsis thaliana; Ta, Triticum aestivumLinn; Cs, Camellia sinensis; Os, Oryza sativa; Mn, Morus notabilis Schneid.; Sb, Sorghum bicolor; Cs, Cannabis sativa; Pt, Populus trichocarpa; Pav, Prunus avium; Sl, Solanum lycopersicum; Pa, Populus alba; Jm, Juglans microcarpa; Zm, Zea mays; GenBank numbers: AtCCD1(), AtCCD4(), AtCCD7(), AtCCD8(), TaCCD4 (QEX50885.1), TaCCD1 (QEX50880.1), TaCCD7 (ASW22783.1), SlCCD1A (NP_001234542.1), SlCCD1B1 (NP_001233838.1), SlCCD1B2 (NP_001310512.1), CsCCD1 (AYK03324.1), CsCCD4 (AYK03325.1), SlCCD1A (NP_001234542.1), SlCCD1B1 (NP_001233838.1), SlCCD1B2 (NP_001310512.1), SbCCD1 (AGN03859.1), SbCCD4 (AGN03860.1), CcCCD4B (ABC26012.1), CcCCD4A (ABC26011.1), MdCCD4 (ABY47995.1), MdCCD7 (AUZ82805.1), OsCCD7 (XP_015637185.1), OsCCD1 (ABA99624.2), OsCCD8A (sp|Q93VD5.1), CsCCD1 (XP_030493365.1), PtCCD4 (XP_024457659.1), PavCCD1 (XP_021820758.1), PaCCD1 (XP_034890793.1), JmCCD1 (XP_041018063.1) Mn012507 (EXB32777.1), Mn012508(EXB32778.1), Mn012509 (EXB32779.1), Mn008739 (EXB58585.1), Mn008741 (EXB58586.1), Mn023189 (EXC17835.1).