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Phylogeography of the component plant species and phytophagous insects of warm temperate region in Taiwan and Japan

台湾及日本暖温带植物组成及植食性昆虫系统发育地理学

基本信息

批准号：
16405014
负责人：
MURAKAMI Noriaki
金额：
$ 8.51万
依托单位：
Tokyo Metropolitan University (2006)Kyoto University (2004-2005)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

We performed phylogeographic studies of the component plant species of warm temperate regions of Taiwan and Japan using allozyme and nucleotide sequencing analyses. We mainly examined Farfugium japonicum and Peucedanum japonicum after collecting their plant materials from various locaities of Taiwan and Japan. We formerly elucidated that populations of these plant species in Southern Ryukyu (Is.Ishigaki and Is. Iriomote) are genetically well differentiated from those of Middle and Northern Ryukyu (the Okinawa Isls., the Amami Isls., the Tokara Isls.). It was considered that this phenomenon was caused by genetic exchange between the populations of Southern Ryukyu and Taiwan. However, the results of this study clearly revealed that populations of Southern Ryukyu are genetically well differentiated even from those of Taiwan in these two plant species. Therefore, it was strongly suggested that Southern Ryukyu populations of F.japonicum and P.japonicum have been separated maybe geographically either from Taiwan or the other regions of Ryukyu for long times so that they obtained genetical uniqueness.Another interesting findings of this study is genetic similarities between populations of these two plant species from LanYu Island of Taiwan and Middle Ryukyu. The populations of of F.japonicum and P.japonicum of LanYu are genetically more similar to those of Okinawa and Amami Islands than those of Taiwan based on allozyme analysis. They also share haplotypes of chloroplast DNAs. Taking that Lanyu Island was recently formed volcanic island into account, the plant populations of the islands were established by rare long distance dispersal from Middle Ryukyu. It is very interesting that long distance dispersal from north to south was suggested in this species because mostly dispersal events from south to north are often documented in the past phytogeographical studies.

我们利用等位酶和核苷酸测序分析，对台湾和日本暖温带地区的植物组成物种进行了系统发育地理学研究。我们主要从台湾和日本各地收集了Farfugium japonicum 和Peucedanum japonicum 的植物材料进行了研究。我们之前阐明，琉球南部（石垣岛和西表岛）的这些植物种群在遗传上与琉球中部和北部（冲绳群岛、奄美群岛、吐噶喇群岛）的植物种群有很好的差异。人们认为这种现象是由琉球南部和台湾人群之间的基因交换造成的。然而，这项研究的结果清楚地表明，在这两种植物物种中，琉球南部的种群甚至与台湾的种群也有很好的遗传差异。因此，有人强烈认为，琉球南部的F.japonicum和P.japonicum种群可能在地理上与台湾或琉球其他地区长期分离，从而获得了遗传上的独特性。本研究的另一个有趣的发现是台湾兰屿和中部琉球的这两种植物种群之间的遗传相似性。根据等位酶分析，兰屿的日本镰刀菌和日本对虾种群在遗传上与冲绳和奄美群岛的种群比台湾的种群更相似。它们还共享叶绿体 DNA 的单倍型。考虑到兰屿是新近形成的火山岛，岛上的植物种群是由琉球中部罕见的长距离扩散形成的。非常有趣的是，该物种被认为从北到南进行长距离传播，因为过去的植物地理学研究经常记录大多数从南到北的传播事件。