Genomic basis of homoploid hybrid speciation within chestnut trees
文献类型：期刊论文
| 作者 | Sun, Yongshuai1; Lu, Zhiqiang1; Zhu, Xingfu; Ma, Hui
|
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2020 |
| 卷号 | 11期号:1页码:- |
| 关键词 | FLOWERING-TIME GENE FLOW INFERENCE ASSOCIATION POPULATIONS DIVERSITY EVOLUTION SELECTION CASTANEA HISTORY |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-020-17111-w |
| 英文摘要 | Hybridization can drive speciation. We examine the hypothesis that Castanea henryi var. omeiensis is an evolutionary lineage that originated from hybridization between two nearsympatric diploid taxa, C. henryi var. henryi and C. mollissima. We produce a high-quality genome assembly for mollissima and characterize evolutionary relationships among related chestnut taxa. Our results show that C. henryi var. omeiensis has a mosaic genome but has accumulated divergence in all 12 chromosomes. We observe positive correlation between admixture proportions and recombination rates across the genome. Candidate barrier genomic regions, which isolate var. henryi and mollissima, are re-assorted in the hybrid lineage. We further find that the putative barrier segments concentrate in genomic regions with less recombination, suggesting that interaction between natural selection and recombination shapes the evolution of hybrid genomes during hybrid speciation. This study highlights that reassortment of parental barriers is an important mechanism in generating biodiversity. |
| 学科主题 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000550671200001 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/11756]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 作者单位 | 1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, CAS Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China 2.Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, Mengla 666303, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Yongshuai,Lu, Zhiqiang,Zhu, Xingfu,et al. Genomic basis of homoploid hybrid speciation within chestnut trees[J]. NATURE COMMUNICATIONS,2020,11(1):-. |
| APA | Sun, Yongshuai,Lu, Zhiqiang,Zhu, Xingfu,&Ma, Hui.(2020).Genomic basis of homoploid hybrid speciation within chestnut trees.NATURE COMMUNICATIONS,11(1),-. |
| MLA | Sun, Yongshuai,et al."Genomic basis of homoploid hybrid speciation within chestnut trees".NATURE COMMUNICATIONS 11.1(2020):-. |
入库方式： OAI收割
来源：西双版纳热带植物园
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