Genetic Diversity and Connectivity of Reef-Building Halimeda macroloba in the Indo-Pacific Region
文献类型：期刊论文
| 作者 | Song, Xiaohan1,2; Yao, Jianting1; Roleda, Michael Y.3; Liang, Yanshuo4; Xu, Rui1; Lin, Yude1; Gonzaga, Shienna Mae C.3; Du, Yuqun5; Duan, Delin1,2 |
| 刊名 | PLANTS-BASEL
 |
| 出版日期 | 2025-05-16 |
| 卷号 | 14期号:10页码:15 |
| 关键词 | population structure gene flow ocean currents calcified algae seaweed conservation |
| ISSN号 | 2223-7747 |
| DOI | 10.3390/plants14101497 |
| 通讯作者 | Duan, Delin(dlduan@qdio.ac.cn) |
| 英文摘要 | Understanding population genetic connectivity is crucial for the sustainability and persistence of marine biodiversity. As a fundamental reef-building macroalga of the coastal ecosystem, Halimeda macroloba Decaisne is one of the dominant intertidal seaweeds in the Indo-Pacific region. However, its genetic structure and population connectivity have been poorly recognized. Here, we explored the population genetic structure and genetic connectivity of H. macroloba using chloroplast tufA, rps3-rpl14, and rbcL. Our results indicated low genetic diversity and shallow population genetic structure at the intraspecific level, uncovering five genetic groups with six subdivided lineages in tufA and two genetic clusters in rps3-rpl14. We detected demographic expansion in the last glacial period of the Pleistocene and significantly asymmetric gene flow among different geographical units. We suggest that the southwestward ocean currents under the influence of northeast monsoon in the Indo-Pacific region are the main factor in shaping the present genetic structure, and the asexual reproduction of H. macroloba also plays an important role of the low genetic diversity pattern; in addition, the divergence between genetic clusters might be related to the historical isolation led by the paleoclimate oscillation in the Pleistocene. The Xisha Islands in the northern South China Sea might serve as a potential refugium of H. macroloba, which needs extra attention to conservation management. Given the limitation of sample size, we need to conduct more field work and carry out further research at a larger scale in the future. Our study provided new insights into the theory of population connectivity in the Indo-Pacific region and provided scientific basis for tropical costal seaweed conservation. |
| WOS关键词 | PHYLOGENETIC ANALYSIS ; GLACIAL REFUGIA ; BRYOPSIDALES ; CHLOROPHYTA ; CURRENTS ; PHYLOGEOGRAPHY ; VARIABILITY ; EVOLUTION ; SOFTWARE ; DYNAMICS |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences ; Qingdao Postdoc Project[QDBSH20240102101] ; Thailand Research Fund[RDG6130002] ; [XDB42030203] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001495731800001 |
| 出版者 | MDPI |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/202127]  |
| 专题 | 海洋研究所_海洋生物分类与系统演化实验室 |
| 通讯作者 | Duan, Delin |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, State Key Lab Breeding Biotechnol & Sustainable Aq, Qingdao 266000, Peoples R China 2.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao 266200, Peoples R China 3.Univ Philippines, Marine Sci Inst, Algal Ecophysiol AlgaE Lab, Quezon City 1101, Philippines 4.Chinese Acad Sci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao Key Lab Marine Biodivers & Conservat, Qingdao 266071, Peoples R China 5.Univ Melbourne, Sch Biosci, Melbourne Integrat Genom, Melbourne, Vic 3010, Australia |
| 推荐引用方式 GB/T 7714 | Song, Xiaohan,Yao, Jianting,Roleda, Michael Y.,et al. Genetic Diversity and Connectivity of Reef-Building Halimeda macroloba in the Indo-Pacific Region[J]. PLANTS-BASEL,2025,14(10):15. |
| APA | Song, Xiaohan.,Yao, Jianting.,Roleda, Michael Y..,Liang, Yanshuo.,Xu, Rui.,...&Duan, Delin.(2025).Genetic Diversity and Connectivity of Reef-Building Halimeda macroloba in the Indo-Pacific Region.PLANTS-BASEL,14(10),15. |
| MLA | Song, Xiaohan,et al."Genetic Diversity and Connectivity of Reef-Building Halimeda macroloba in the Indo-Pacific Region".PLANTS-BASEL 14.10(2025):15. |
入库方式： OAI收割
来源：海洋研究所
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