論文 - 詳細
| RRC ID | 70617 |
|---|---|
| 著者 | Banerjee AK, Feng H, Guo W, Harms NE, Xie H, Liang X, Xing F, Lin Y, Shao H, Guo Z, Ng WL, Huang Y. |
| タイトル | Glacial vicariance and oceanic circulation shape population structure of the coastal legume Derris trifoliata in the Indo-West Pacific. |
| ジャーナル | Am J Bot |
| Abstract |
PREMISE OF THE STUDY:The phylogeography of coastal plant species is shaped by contemporary and historical biogeographic processes. In this study, we aim to decipher the phylogeography of Derris trifoliata, a woody legume of relatively recent origin and wide distribution, in coastal areas in the Indo-West Pacific (IWP) region. METHODS:Genetic diversity and population structure were assessed by analyzing six nuclear and three chloroplast DNA sequences from 30 populations across the species' range. Phylogeography was inferred by estimating gene flow, divergence time, historical population size changes, and historical habitat suitability using paleoclimatic niche-modeling. KEY RESULTS:High genetic diversity was observed at the species-level. The populations of three oceanic regions included in this study (i.e., Indian Ocean, South China Sea, and Pacific Ocean) formed distinct clades, and likely diverged during the late Pleistocene. Potential barriers to gene flow were identified, including the Sunda and Sahul shelves, geographic distance, and current patterns of oceanic circulation. Analysis of changes in population size supported the bottleneck model, which was strengthened by estimates of habitat suitability across paleoclimatic conditions. CONCLUSIONS:The once widespread distribution of D. trifoliata was fragmented by changes in climatic suitability and biogeographic barriers that arose following sea-level changes during the Pleistocene. In addition, contemporary patterns of oceanic circulation and geographic distance between populations appear to maintain genetic differentiation across its distribution in the IWP. This article is protected by copyright. All rights reserved. |
| 巻・号 | 109(6) |
| ページ | 1016-1034 |
| 公開日 | 2022-6-1 |
| DOI | 10.1002/ajb2.1851 |
| PMID | 35419829 |
| MeSH | DNA, Mitochondrial / genetics Derris* / genetics Fabaceae* / genetics Genetic Variation Pacific Ocean Phylogeny Phylogeography |
| IF | 3.038 |
| リソース情報 | |
| GBIF | Vascular plant specimens of National Museum of Nature and Science (TNS) Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Vascular plant specimens of Nagano Environmental Conservation Research Institute, Nagano Prefecture |