Unbiased Subgenome Evolution in Allotetraploid Species of Ephedra and Its Implications for the Evolution of Large Genomes in Gymnosperms
文献类型：期刊论文
| 作者 | Wu, Hui; Yu, Qiong; Ran, Jin-Hua; Wang, Xiao-Quan
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| 刊名 | GENOME BIOLOGY AND EVOLUTION
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| 出版日期 | 2021 |
| 卷号 | 13期号:2 |
| 关键词 | transcriptome genome evolution unbiased subgenome evolution allotetraploid Ephedra gymnosperm |
| ISSN号 | 1759-6653 |
| DOI | 10.1093/gbe/evaa236 |
| 文献子类 | Article |
| 英文摘要 | The evolutionary dynamics of polyploid genomes and consequences of polyploidy have been studied extensively in angiosperms but very rarely in gymnosperms. The gymnospermous genus Ephedra is characterized by a high frequency of polyploidy, and thus provides an ideal system to investigate the evolutionary mode of allopolyploid genomes and test whether subgenome dominance has occurred in gymnosperms. Here, we sequenced transcriptomes of two allotetraploid species of Ephedra and their putative diploid progenitors, identified expressed homeologs, and analyzed alternative splicing and homeolog expression based on PacBio Iso-Seq and Illumina RNA-seq data. We found that the two subgenomes of the allotetraploids had similar numbers of expressed homeologs, similar percentages of homeologs with dominant expression, and approximately equal numbers of isoforms with alternative splicing, showing an unbiased subgenome evolution as in a few polyploid angiosperms, with a divergence of the two subgenomes at similar to 8 Ma. In addition, the nuclear DNA content of the allotetraploid species is almost equal to the sum of two putative progenitors, suggesting limited genome restructuring after allotetraploid speciation. The allopolyploid species of Ephedra might have undergone slow diploidization, and the unbiased subgenome evolution implies that the formation of large genomes in gymnosperms could be attributed to even and slow fractionation following polyploidization. |
| 学科主题 | Evolutionary Biology ; Genetics & Heredity |
| 出版地 | OXFORD |
| WOS关键词 | NUCLEAR-DNA CONTENT ; FUNCTIONAL DIVERGENCE ; PHYLOGENETIC TREE ; GENE-EXPRESSION ; POLYPLOIDY ; SEQUENCE ; FRACTIONATION ; ANCIENT ; CONSEQUENCES ; TRANSCRIPTOME |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000637215800004 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Key Research Programof Frontier Sciences, the Chinese Academy of Sciences [QYZDJ-SSW-SMC027] ; National Key Research and Development Program of China [2017YFA0605100] ; National Natural Science Foundation of China [31330008, 31170197] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26557]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.[Yu, Qiong 2.[Wu, Hui 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Yu, Qiong 5.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China 6.Ran, Jin-Hua |
| 推荐引用方式 GB/T 7714 | Wu, Hui,Yu, Qiong,Ran, Jin-Hua,et al. Unbiased Subgenome Evolution in Allotetraploid Species of Ephedra and Its Implications for the Evolution of Large Genomes in Gymnosperms[J]. GENOME BIOLOGY AND EVOLUTION,2021,13(2). |
| APA | Wu, Hui,Yu, Qiong,Ran, Jin-Hua,&Wang, Xiao-Quan.(2021).Unbiased Subgenome Evolution in Allotetraploid Species of Ephedra and Its Implications for the Evolution of Large Genomes in Gymnosperms.GENOME BIOLOGY AND EVOLUTION,13(2). |
| MLA | Wu, Hui,et al."Unbiased Subgenome Evolution in Allotetraploid Species of Ephedra and Its Implications for the Evolution of Large Genomes in Gymnosperms".GENOME BIOLOGY AND EVOLUTION 13.2(2021). |
入库方式： OAI收割
来源：植物研究所
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