Phylogenetic analyses of Zostera species based on rbcL and matK nucleotide sequences: Implications for the origin and diversification of seagrasses in Japanese waters
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- Kato Yumiko
- Department of Biosystems Science, The Graduate University for Advanced Studies (Sokendai)
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- Aioi Keiko
- Aoyama Gakuin Women's Junior College
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- Omori Yuji
- Yokosuka City Museum
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- Takahata Naoyuki
- Department of Biosystems Science, The Graduate University for Advanced Studies (Sokendai)
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- Satta Yoko
- Department of Biosystems Science, The Graduate University for Advanced Studies (Sokendai)
書誌事項
- タイトル別名
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- Phylogenetic analyses of <i>Zostera</i> species based on <i>rbcL</i> and <i>matK</i> nucleotide sequences: Implications for the origin and diversification of seagrasses in Japanese waters
- Phylogenetic analyses of Zostera species based on rbcL and matK nucleotide sequences: Implications for the origin and diversification of aeagrasses in Japanese waters
この論文をさがす
抄録
Seagrasses are composed of four families belonging to angiosperms and they are thought to become adaptive to aquatic life independently. Zosteraceae is one such family and because of the relatively high species diversity around Japan and Korea coast areas, the family might have arisen therefrom. To elucidate the origin and evolution of Zosteraceae which consists of three genera, Phyllospadix, Zostera, and Heterozostera, 2.8 kb nucleotide sequences of rbcL and matK genes in the chloroplast genome were examined for various species, including cosmopolitan Z. marina and endemic Z. caulescens. The phylogenetic analysis reveals the following three features. First, based on the synonymous nucleotide substitution rate of the rice chloroplast genome, we estimated the divergence times between Zosteraceae and its closest relative, Potamogetonaceae, and between different genera, Zostera and Phyllospadix, as approximately 100 million years (myr) and 36 myr, respectively, suggesting that Zosteraceae emerged somewhere in the period from 36 myr ago to 100 myr ago. Second, two subgenera of Zostera, Zostera and Zosterella, exhibit their reciprocal monophyly and appear to have differentiated from each other approximately 33 myr ago. However, the third genus Heterozostera branched off only 5 myr ago from the stem lineage leading to Zosterella and this seems too recent in comparison with the ancient divergence of the two subgenera. Third, we estimated the most recent common ancestor of subgenus Zostera as 6 myr. In Z. marina four haplotypes were found in the sample and have diversified in the past 1.5 myr. One haplotype is shared by both sides of the Japan Archipelago and its closely related haplotypes occur also in eastern Pacific Ocean. Based on these phylogeographic analyses, we propose a provisional age related classification of Zosteraceae to argue the origin and evolution.<br>
収録刊行物
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- Genes & Genetic Systems
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Genes & Genetic Systems 78 (5), 329-342, 2003
日本遺伝学会
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詳細情報 詳細情報について
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- CRID
- 1390001205472996480
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- NII論文ID
- 10011827096
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- NII書誌ID
- AA11077421
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- ISSN
- 18805779
- 13417568
- http://id.crossref.org/issn/13417568
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- NDL書誌ID
- 6778154
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- PubMed
- 14676424
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可