Genome-wide identification and expression profiling of the carotenoid cleavage dioxygenase (CCD) gene family in Brassica napus L. oleh Xin-Tong Zhou, Le-Dong Jia, Mou-Zheng Duan, Xue Chen, Cai-Lin Qiao, Jin-Qi Ma, Chao Zhang, Fu-Yu Jing, Sheng-Sen Zhang, Bo Yang, Li-Yuan Zhang, Jia-Na Li