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Title: Global phylogeography of a pantropical mangrove genus Rhizophora
Authors: Takayama, Koji  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-5209-6396 (unconfirmed)
Tateishi, Yoichi
Kajita, Tadashi
Author's alias: 髙山, 浩司
立石, 庸一
梶田, 忠
Issue Date: 2021
Publisher: Springer Nature
Journal title: Scientific Reports
Volume: 11
Thesis number: 7228
Abstract: Rhizophora is a key genus for revealing the formation process of the pantropical distribution of mangroves. In this study, in order to fully understand the historical scenario of Rhizophora that achieved pantropical distribution, we conducted phylogeographic analyses based on nucleotide sequences of chloroplast and nuclear DNA as well as microsatellites for samples collected worldwide. Phylogenetic trees suggested the monophyly of each AEP and IWP lineages respectively except for R. samoensis and R. × selala. The divergence time between the two lineages was 10.6 million years ago on a dated phylogeny, and biogeographic stochastic mapping analyses supported these lineages separated following a vicariant event. These data suggested that the closure of the Tethys Seaway and the reduction in mangrove distribution followed by Mid-Miocene cooling were key factors that caused the linage diversification. Phylogeographic analyses also suggested the formation of the distinctive genetic structure at the AEP region across the American continents around Pliocene. Furthermore, long-distance trans-pacific dispersal occurred from the Pacific coast of American continents to the South Pacific and formed F1 hybrid, resulting in gene exchange between the IWP and AEP lineages after 11 million years of isolation. Considering the phylogeny and phylogeography with divergence time, a comprehensive picture of the historical scenario behind the pantropical distribution of Rhizophora is updated.
Description: マングローブ植物の全球分布と分化過程を解明 --ヤエヤマヒルギ属の種・地域を網羅した系統解析--. 京都大学プレスリリース. 2021-03-31.
Rights: © The Author(s) 2021
This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
URI: http://hdl.handle.net/2433/262483
DOI(Published Version): 10.1038/s41598-021-85844-9
PubMed ID: 33785819
Related Link: https://www.kyoto-u.ac.jp/ja/research-news/2021-03-31
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