2013 Fiscal Year Final Research Report
Phylogeographical studies on the origin and evolution of plants in the Bonin Islands, Japan
| Project/Area Number |
22255003
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Biodiversity/Systematics
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KACHI Naoki 首都大学東京, 大学院理工学研究科, 教授 (30124340)
SEO Akihiro 京都大学, 大学院理学研究科, 研究員 (30378567)
SUGAWARA Takashi 首都大学東京, 大学院理工学研究科, 准教授 (10226425)
HAYASHI Fumio 首都大学東京, 大学院理工学研究科, 准教授 (40212154)
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| Co-Investigator(Renkei-kenkyūsha) |
MURATA Jin 東京大学, 大学院理学系研究科, 教授 (90134452)
YOKOTA Masatsugu 琉球大学, 理学部, 教授 (90166885)
KAJITA Tadashi 千葉大学, 大学院理学研究科, 准教授 (80301117)
KATO Hidetoshi 首都大学東京, 大学院理工学研究, 助教 (50305413)
SHIMIZU Akira 首都大学東京, 大学院理工学研究科, 助教 (10315749)
FURUKAWA Toshiko 首都大学東京, 大学院理工学研究科, 助教 (00221565)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | 分類学 / 小笠原諸島 / 植物 / 植物地理学 / 進化 |
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| Research Abstract |
In the present study, we conducted a molecular phylogeographic analysis of several taxa to elucidate the geographical origin of the species occurring in the Bonin Islands, Japan. We collected several plant materials from the Bonin Islands and its surrounding areas, such as the Ryukyus, Taiwan, the Philippines, Guam, and the Hawaiian Islands. Our phylogenetic results showed that Gynochthodes boninensis (Rubiaceae), endemic to the Bonin Islands is most closely related to G. parvifolia from Taiwan rather than G. umbellata, which was treated as the same species as G. boninensis. This result suggests that G. boninensis may have originated from a progenitor native to eastern Asia. Gynochthodes boninensis is reported to have an androdioecious sexual system, which is rare in flowering plants, whereas its closely relatives, G. parvipolia and G. umbellata are dioecious. The androdioecious sexual system of this species may have evolved from dioecy.
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[Journal Article] Genetic differentiation in Elaeocarpus photiniifolia (Elaeocarpaceae) associated with geographic distribution and habitat variation in the Bonin (Ogasawara) Islands2013
Author(s)
Sugai, K., Suzuki, S., Nagamitsu, T., Murakami, N., Kato, H. & Yoshimura, H.
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Journal Title
J. Plant Res
Volume: 126(6)
Pages: 763-774
DOI
Peer Reviewed
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[Journal Article] Geographical origin and sexual-system evolution of the androdioecious plant Gynochthodes boninensis (Rubiaceae), endemic to the Bonin Islands, Japan2013
Author(s)
Oguri, E., Sugawara, T., Peng, C-I., Yang, A. T. Y. & Murakami, N.
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Journal Title
Mol. Phylogenet. Evol
Volume: 68(3)
Pages: 699-708
DOI
Peer Reviewed
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[Journal Article] Geographical origin of Leucobryum boninense Sull. & Lesq. (Leucobryaceae, Musci) endemic to the Bonin Islands, Japan2013
Author(s)
Oguri, E., Yamaguchi, T., Tsubota, H., Deguchi, H. & Murakami, N.
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Journal Title
Ecol. Evol
Volume: 3(4)
Pages: 753-762
DOI
Peer Reviewed
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[Journal Article] Development of EST-SSR markers for Elaeocarpus photinifolica (Elaeocarpaceae), an endemic taxon of the Bonin Islands2012
Author(s)
Sugai, K., Suzuki, S., Uchiyama, K., Murakami, N., Kato, H. & Yoshimura, H.
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Journal Title
Am. J. Bot
Volume: 99(2)
Pages: e84-e87
DOI
Peer Reviewed
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