文献类型： 外文期刊

作者： Luo, Jing ¹ ; Chai, Jing ¹ ; Wen, Yanling ³ ; Tao, Min ⁴ ; Lin, Guoliang ¹ ; Liu, Xiaochuan ¹ ; Ren, Li ⁴ ; Chen, Zeyu ⁶ ; W ¹ ;

作者机构： 1.Yunnan Univ, State Key Lab Conservat & Utilizat Bioresource, Kunming 650091, Yunnan, Peoples R China

2.Yunnan Univ, Sch Life Sci, Kunming 650091, Yunnan, Peoples R China

3.Chinese Acad Sci, Kunming Inst Zool, State Key Lab Genet Resources & Evolut, Kunming 650223, Yunnan, Peoples R China

4.Hunan Normal Univ, State Key Lab Dev Biol Freshwater Fish, Changsha 410081, Hunan, Peoples R China

5.Hunan Normal Univ, Coll Life Sci, Changsha 410081, Hunan, Peoples R China

6.Chinese Acad Sci, Beijing Inst Genom, CAS Key Lab Genom & Precis Med, Beijing 100101, Peoples R China

7.Chinese Acad Agr Sci, Agr Genom Inst, Shenzhen 518120, Peoples R China

8.Univ Maryland, Dept Comp Sci, College Pk, MD 20742 USA

9.Chinese Acad Fishery Sci, Ctr Appl Aquat Genom, Beijing 100141, Peoples R China

10.Royal Ontario Museum, Ctr Biodivers & Conservat Biol, Toronto, ON M5S 2C6, Canada

11.Univ Konstanz, Dept Biol, D-78457 Constance, Germany

12.Chinese Acad Sci, Univ Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol,Innovat Acad Seed Design, Wuhan 430072, Peoples R China

13.Xiamen Univ, Coll Ocean & Earth Sci, Xiamen 361102, Fujian, Peoples R China

14.Peng Cheng Lab, Shenzhen 518052, Peoples R China

15.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China

16.Univ Texas Austin, Dept Mol Biosci, Austin, TX 78712 USA

17.Chinese Acad Sci, CAS Ctr Excellence Anim Evolut & Genet, Kunming Inst Zool, Kunming 650223, Yunnan, Peoples R China

18.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

期刊名称：SCIENCE ADVANCES （ 影响因子：14.136； 五年影响因子：16.446 ）

ISSN： 2375-2548

年卷期： 2020 年 6 卷 22 期

页码：

收录情况： SCI

摘要： A persistent enigma is the rarity of polyploidy in animals, compared to its prevalence in plants. Although animal polyploids are thought to experience deleterious genomic chaos during initial polyploidization and subsequent rediploidization processes, this hypothesis has not been tested. We provide an improved reference-quality de novo genome for allotetraploid goldfish whose origin dates to similar to 15 million years ago. Comprehensive analyses identify changes in subgenomic evolution from asymmetrical oscillation in goldfish and common carp to diverse stabilization and balanced gene expression during continuous rediploidization. The homoeologs are coexpressed in most pathways, and their expression dominance shifts temporally during embryogenesis. Homoeolog expression correlates negatively with alternation of DNA methylation. The results show that allotetraploid cyprinids have a unique strategy for balancing subgenomic stabilization and diversification. Rediploidization process in these fishes provides intriguing insights into genome evolution and function in allopolyploid vertebrates.