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Phylogenetic tree of CCD proteins from Arabidopsis, rice, G. hirsutum, G. barbadense, G. arboreum and G. raimondii. Full-length CCD proteins were aligned using MUSCLE program in MEGA 7.0. The phylogenetic tree was generated by the Neighbor-Joining (NJ) method with 1,000 bootstrap replicates. CCD proteins were divided into A-F sub-families distinguished by different colors. CCD proteins of Arabidopsis and rice were marked by green dots
