Analyses of a chromosome-scale genome assembly reveal the origin and evolution of cultivated chrysanthemum
文献类型： 外文期刊
第一作者： Song, Aiping
作者： Song, Aiping;Su, Jiangshuo;Wang, Haibin;van de Peer, Yves;Fang, Weimin;Guan, Zhiyong;Zhang, Fei;Wang, Zhenxing;Wang, Likai;Ding, Baoqing;Zhao, Shuang;Ding, Lian;Liu, Ye;Zhou, Lijie;He, Jun;Jia, Diwen;Zhang, Jiali;Chen, Chuwen;Yu, Zhongyu;Sun, Daojin;Jiang, Jiafu;Chen, Sumei;Chen, Fadi;Zhang, Zhongren;Zhang, Xingtan;van de Peer, Yves;van de Peer, Yves;Chen, Fei;Chen, Fei
作者机构： Nanjing Agr Univ, Coll Hort, State Key Lab Crop Genet & Germplasm Enhancement &, Key Lab Landscaping,Key Lab Flower Biol & Germplas, Nanjing 210095, Jiangsu, Peoples R China;Novogene Bioinformat Inst, Beijing 100083, Peoples R China;Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Genome Anal Lab,M, Shenzhen 518120, Guangdong, Peoples R China;Univ Ghent, VIB Ctr Plant Syst Biol, Dept Plant Biotechnol & Bioinformat, B-9052 Ghent, Belgium;Univ Pretoria, Ctr Microbial Ecol & Genom, Dept Biochem Genet & Microbiol, ZA-0028 Pretoria, South Africa;Hainan Univ, Sanya Nanfan Res Inst, Coll Trop Crops, Sanya 572025, Hainan, Peoples R China;Hainan Yazhou Bay Seed Lab, Sanya 572025, Hainan, Peoples R China
期刊名称：NATURE COMMUNICATIONS （ 2022影响因子：16.6； 五年影响因子：17.0 ）
年卷期： 2023 年 14 卷 1 期
收录情况： SCI
摘要： Chrysanthemum (Chrysanthemum morifolium Ramat.) is a globally important ornamental plant with great economic, cultural, and symbolic value. However, research on chrysanthemum is challenging due to its complex genetic background. Here, we report a near-complete assembly and annotation for C. morifolium comprising 27 pseudochromosomes (8.15 Gb; scaffold N50 of 303.69 Mb). Comparative and evolutionary analyses reveal a whole-genome triplication (WGT) event shared by Chrysanthemum species approximately 6 million years ago (Mya) and the possible lineage-specific polyploidization of C. morifolium approximately 3 Mya. Multilevel evidence suggests that C. morifolium is likely a segmental allopolyploid. Furthermore, a combination of genomics and transcriptomics approaches demonstrate the C. morifolium genome can be used to identify genes underlying key ornamental traits. Phylogenetic analysis of CmCCD4a traces the flower colour breeding history of cultivated chrysanthemum. Genomic resources generated from this study could help to accelerate chrysanthemum genetic improvement. Chrysanthemum is an important ornamental species with great economic value. Here, the authors assemble the haploid genome of C. morifolium, reveal its segmental allopolyploid genomic composition (AA'B), and identify candidate genes associated with flower development, petal shape, and flower colour.
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