The Chrysanthemum nankingense Genome Provides Insights into the Evolution and Diversification of Chrysanthemum Flowers and Medicinal Traits

作     者：Chi Song Yifei Liu Aiping Song Gangqiang Dong Hongbo Zhao Wei Sun Shyam Ramakrishnan Ying Wang Shuaibin Wang Tingzhao Li Yan Niu Jiafu Jiang Bin Dong Ye Xia Sumei Chen Zhigang Hu Fadi Chen Shilin Chen 

作者机构：Key Laboratory of Beijing for Identification and Safety Evaluation of Chinese Medicine Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences Beijing 100700 China College of Pharmacy Hubei University of Chinese Medicine Wuhan 430065 China College of Horticulture Nanjing Agricultural University Key Laboratory of Landscape Agriculture Ministry of Agriculture Nanjing 210095 China Amway (China) Botanical R&D Center Wuxi 214115 China Department of Ornamental Horticulture School of Landscape Architecture Zhejiang Agriculture and Forestry University Hangzhou 311300 China Amway Corporation Buena Park CA 90622-5940 USA Wuhan Benagen Tech Solutions Company Limited Wuhan 430070 China Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical Garden The Chinese Academy of Sciences Guangzhou 510650 China These authors contributed equally to this article 

出 版 物：《Molecular Plant》 (分子植物（英文版）)

年 卷 期：2018年第11卷第12期

页      面：1482-1491页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 

基　　金：The National Key Research and Development Program of China (2016YFD0801102) and the National Natural Science Foundation of China (31870198 and 31400278) 

主　　题：Chrysanthemum genome evolution whole-genome duplication nanopore sequencing flower evolution medicinal plant 

摘      要：The Asteraceae (Compositae),a large plant family of approximately 24 000-35 000 species,accounts for^10% of all angiosperm species and contributes a lot to plant *** most representative members of the Asteraceae are the economically important chrysanthemums (Chrysanthemum L.)that diversified through reticulate *** is typically created by multiple evolutionary mechanisms such as wholegenome duplication 0NGD)or polyploidization and locally repetitive genome ***,the lack of genomic data from chrysanthemum species has prevented an in-depth analysis of the evolutionary mechanisms involved in their ***,we used Oxford Nanopore long-read technologyto sequence the diploid Chrysanthemum nankingense genome,which represents one of the progenitor genomes of domesticated *** analysis revealed that the evolution of the *** genome was driven by bursts of repetitive element expansion and WGD events including a recentWGD that distinguishes chrysanthemum from sunflower,which diverged from chrysanthemum approximately 38.8 million years *** of ornamental and medicinal traits in chrysanthemums are linked to the expansion of candidate gene families by duplication events including paralogous gene ***,our study of the assembled reference genome offers new knowledge and resources to dissect the history and pattern of evolution and diversification of chrysanthemum plants,and also to accelerate their breeding and improvement.