RADseq data reveal ancient, but not pervasive, introgression between Californian tree and scrub oak species (Quercus sect. Quercus: Fagaceae)
文献类型：期刊论文
| 作者 | Kim, Bernard Y.1; Wei, Xinzeng1,2; Fitz-Gibbon, Sorel1; Lohmueller, Kirk E.1,3; Ortego, Joaquin4; Gugger, Paul F.1,6; Sork, Victoria L.1,5 |
| 刊名 | MOLECULAR ECOLOGY
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 27期号:22页码:4556-4571 |
| 关键词 | ancient introgression D-statistic test hybridization phylogeny systematics |
| ISSN号 | 0962-1083 |
| DOI | 10.1111/mec.14869 |
| 英文摘要 | A long-term debate in evolutionary biology is the extent to which reproductive isolation is a necessary element of speciation. Hybridizing plants in general are cited as evidence against this notion, and oaks specifically have been used as the classic example of species maintenance without reproductive isolation. Here, we use thousands of SNPs generated by RAD sequencing to describe the phylogeny of a set of sympatric white oak species in California and then test whether these species exhibit pervasive interspecific gene exchange. Using RAD sequencing, we first constructed a phylogeny of ten oak species found in California. Our phylogeny revealed that seven scrub oak taxa occur within one clade that diverged from a common ancestor with Q. lobata, that they comprise two subclades, and they are not monophyletic but include the widespread tree oak Q. douglasii. Next, we searched for genomic patterns of allele sharing consistent with gene flow between long-divergent tree oaks with scrub oaks. Specifically, we utilized the D-statistic as well as model-based inference to compare the signature of shared alleles between two focal tree species (Q. lobata and Q. engelmannii) with multiple scrub species within the two subclades. We found that introgression is not equally pervasive between sympatric tree and scrub oak species. Instead, gene flow commonly occurs from scrub oaks to recently sympatric Q. engelmannii, but less so from scrub oaks to long-sympatric Q. lobata. This case study illustrates the influence of ancient introgression and impact of reproductive isolating mechanisms in preventing indiscriminate interspecific gene exchange. |
| 资助项目 | National Science Foundation[IOS-1444611] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000450983600015 |
| 出版者 | WILEY |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/3464]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Sork, Victoria L. |
| 作者单位 | 1.Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA 2.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan, Hubei, Peoples R China 3.Univ Calif Los Angeles, David Geffen Sch Med, Dept Human Genet, Los Angeles, CA 90095 USA 4.CSIC, EBD, Dept Integrat Ecol, Seville, Spain 5.Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA USA 6.Univ Maryland, Ctr Environm Sci, Appalachian Lab, Frostburg, MD USA |
| 推荐引用方式 GB/T 7714 | Kim, Bernard Y.,Wei, Xinzeng,Fitz-Gibbon, Sorel,et al. RADseq data reveal ancient, but not pervasive, introgression between Californian tree and scrub oak species (Quercus sect. Quercus: Fagaceae)[J]. MOLECULAR ECOLOGY,2018,27(22):4556-4571. |
| APA | Kim, Bernard Y..,Wei, Xinzeng.,Fitz-Gibbon, Sorel.,Lohmueller, Kirk E..,Ortego, Joaquin.,...&Sork, Victoria L..(2018).RADseq data reveal ancient, but not pervasive, introgression between Californian tree and scrub oak species (Quercus sect. Quercus: Fagaceae).MOLECULAR ECOLOGY,27(22),4556-4571. |
| MLA | Kim, Bernard Y.,et al."RADseq data reveal ancient, but not pervasive, introgression between Californian tree and scrub oak species (Quercus sect. Quercus: Fagaceae)".MOLECULAR ECOLOGY 27.22(2018):4556-4571. |
入库方式： OAI收割
来源：武汉植物园
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