Genomic resequencing provides new insights into ecological diversification of four Saccharina Japonica varieties
文献类型：期刊论文
| 作者 | Zhang, Jie3,4; Yotsukura, Norishige2; Han, Sang-Yun1; Jueterbock, Alexander7; Wang, Xiuliang3,4; Galanin, Dmitry A.6; Klimova, Anna V.5; Yoon, Hwan Su1; Duan, Delin3,4 |
| 刊名 | BMC GENOMICS
 |
| 出版日期 | 2026-02-23 |
| 卷号 | 27期号:1页码:15 |
| 关键词 | Ecological speciation Natural selection Evolutionary history Genetic isolation Saccharina japonica |
| ISSN号 | 1471-2164 |
| DOI | 10.1186/s12864-026-12642-w |
| 通讯作者 | Yoon, Hwan Su(hsyoon2011@skku.edu) ; Duan, Delin(dlduan@qdio.ac.cn) |
| 英文摘要 | Background Saccharina japonica is a commercially and ecologically important seaweed and shows rapid ecological speciation. This kelp represents an excellent model for understanding the process and genetic mechanism of diversification and speciation of brown seaweeds. Up to now, there was limited research about the ecological speciation of seaweeds from genomic perspective. In this study, we conducted genome resequencing of four varieties of S. japonica and two sister species (S. angustata and S. longissima) to investigate the genetic mechanism of ecological speciation. Results The demographic history suggests that the lineage of S. angustata and S. longissima is a sister lineage to that of S. japonica, rather than its direct ancestor, with the genetic lineage of S. japonica var. religiosa diverging earliest from the rest of the taxa. Even though there is lower genetic differentiation among these varieties, natural hybridization and gene flow are limited. We detected some heat resistance (e.g. heat shock protein 70), stress response (e.g. ubiquitin-like protein) and growth-related genes (e.g. immediate upright (imm) upregulated 3) were under positive selection during the ecological speciation. Low linkage disequilibrium decay rate and extensive signals of selective sweeps were detected in these varieties, suggesting that adaptive differentiation under natural selection was the driving force for ecological speciation. Conclusions The main force driving speciation in this species does not appear to be ongoing hybridization but historical admixture and adaptive differentiation due to natural selection. An understanding of the evolutionary history and ecological speciation of S. japonica represents an important prerequisite for effective use of germplasm in breeding and for the conservation of natural resources. |
| WOS关键词 | BROWN ALGA ; HYBRIDIZATION ; PHAEOPHYCEAE ; LAMINARIALES ; POPULATION ; IDENTIFICATION ; INTROGRESSION ; SPECIATION ; PACIFIC ; SPACER |
| 资助项目 | Shandong Provincial Natural Science Foundation[ZR2019BC024] ; the National key R&D Program of China[2023YFE0106200] ; the Korea Institute of Marine Science and Technology Promotion (KIMST) funded to the Ministry of Oceans and Fisheries of Korea[RS-2025-02304428] ; International Partnership Program of Chinese Academy of Sciences[133137KYSB20210034] ; the National Natural Science Foundation of China[32270389; 31900279] |
| WOS研究方向 | Biotechnology & Applied Microbiology ; Genetics & Heredity |
| 语种 | 英语 |
| WOS记录号 | WOS:001729839700003 |
| 出版者 | BMC |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/205078]  |
| 专题 | 中国科学院海洋研究所 |
| 通讯作者 | Yoon, Hwan Su; Duan, Delin |
| 作者单位 | 1.Sungkyunkwan Univ, Dept Biol Sci, Suwon 16419, South Korea 2.Hokkaido Univ, Field Sci Ctr Northern Biosphere, Sapporo, Japan 3.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao 266000, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, State Key Lab Breeding Biotechnol & Sustainable Aq, Qingdao 266000, Peoples R China 5.Russian Acad Sci, Pacific Inst Geog, Kamchatka Div, Far East Branch, Petropavlovsk Kamchatski 683001, Russia 6.Russian Fed Res Inst Fisheries & Oceanol, Sakhalin Branch, Yuzhno Sakhalinsk 693023, Russia 7.Nord Univ, Fac Biosci & Aquaculture, Bodo, Norway |
| 推荐引用方式 GB/T 7714 | Zhang, Jie,Yotsukura, Norishige,Han, Sang-Yun,et al. Genomic resequencing provides new insights into ecological diversification of four Saccharina Japonica varieties[J]. BMC GENOMICS,2026,27(1):15. |
| APA | Zhang, Jie.,Yotsukura, Norishige.,Han, Sang-Yun.,Jueterbock, Alexander.,Wang, Xiuliang.,...&Duan, Delin.(2026).Genomic resequencing provides new insights into ecological diversification of four Saccharina Japonica varieties.BMC GENOMICS,27(1),15. |
| MLA | Zhang, Jie,et al."Genomic resequencing provides new insights into ecological diversification of four Saccharina Japonica varieties".BMC GENOMICS 27.1(2026):15. |
入库方式： OAI收割
来源：海洋研究所
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