The wax gourd genomes offer insights into the genetic diversity and ancestral cucurbit karyotype
文献类型： 外文期刊
作者： Xie, Dasen 1 ; Xu, Yuanchao 2 ; Wang, Jinpeng 4 ; Liu, Wenrui 1 ; Zhou, Qian 2 ; Luo, Shaobo 1 ; Huang, Wu 2 ; He, Xiaomi 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangdong Key Lab New Technol Res Vegetables, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Agr Sci, Key Lab Biol & Genet Improvement Hort Crops, Minist Agr, Sino Dutch Joint Lab Hort Genom,Inst Vegetables &, Beijing 100081, Peoples R China
3.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen 518124, Peoples R China
4.North China Univ Sci & Technol, Sch Life Sci, Tangshan 063200, Hebei, Peoples R China
5.Univ Calif Davis, Dept Plant Biol, Davis, CA 95616 USA
6.Qingdao Agr Univ, Coll Hort, Qingdao 266109, Shandong, Peoples R China
期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）
ISSN： 2041-1723
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： The botanical family Cucurbitaceae includes a variety of fruit crops with global or local economic importance. How their genomes evolve and the genetic basis of diversity remain largely unexplored. In this study, we sequence the genome of the wax gourd (Benincasa hispida), which bears giant fruit up to 80 cm in length and weighing over 20 kg. Comparative analyses of six cucurbit genomes reveal that the wax gourd genome represents the most ancestral karyotype, with the predicted ancestral genome having 15 proto-chromosomes. We also resequence 146 lines of diverse germplasm and build a variation map consisting of 16 million variations. Combining population genetics and linkage mapping, we identify a number of regions/genes potentially selected during domestication and improvement, some of which likely contribute to the large fruit size in wax gourds. Our analyses of these data help to understand genome evolution and function in cucurbits.
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