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首页> 外文期刊>Bulletin of the National Museum of Nature and Science >Rediscovery of Zeuxine boninensis (Orchidaceae) from the Ogasawara (Bonin) Islands and Taxonomic Reappraisal of the Species
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Rediscovery of Zeuxine boninensis (Orchidaceae) from the Ogasawara (Bonin) Islands and Taxonomic Reappraisal of the Species

机译：从小gas原（波宁）群岛重新发现Zeuxine boninensis（兰科）并对其物种进行分类重新评估

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摘要

An initially unidentifiable orchid was discovered during a 2017 expedition to Minami-iwo-to Island, an oceanic island located ca. 1,300 km south of Tokyo, which belongs to the Ogasawara (Bonin) Islands. The plant was first identified as Zeuxine sakagutii Tuyama on the basis of morphological and macromolecular characters. No nucleotide sequence divergences in the nuclear ribosomal DNA ITS and the two plastid regions (matK and trnL-F intron) were found between the Ogasawara plant and Z. sakagutii samples from the Ryukyu Islands and Hainan Island, China. This result indicates a recent, long distance dispersal of this species to Ogasawara. Z. boninensis Tuyama, described from Ogasawara, was considered to be extinct. We did not find any differences between Z. boninensis and Z. sakagutii except for the labellum colour. Partial ITS sequences of Z. boninensis were retrieved from the specimens collected in 1935 and 1936 and they were 100% identical with those of Z. sakagutii. These results demonstrate conspecificity of these two entities, and Z. boninensis became the correct name. In addition, Z. boninensis var. actinomorpha T.Yukawa, a peloric flower type, is newly described from Amami-oshima Island, Ryukyu Islands, Japan.
机译：在2017年对南岩w岛的考察中发现了最初无法识别的兰花，该岛位于加利福尼亚州的一个海洋岛。东京以南1,300公里，属于小gas原（波宁）群岛。根据形态和大分子特征，该植物首先被鉴定为Zeuxine sakagutii Tuyama。在琉球群岛和中国海南岛的小gas原植物与阪崎肠杆菌样品之间，在核糖体DNA ITS和两个质体区（matK和trnL-F内含子）中均未发现核苷酸序列差异。该结果表明该物种最近向小gas原远距离扩散。小gas原所描述的Z. boninensis Tuyama被认为已灭绝。除了斑lum颜色外，我们没有发现邦尼氏梭菌和萨卡古提氏菌之间有任何差异。从1935年和1936年收集的标本中检索出博尼斯特菌的部分ITS序列，这些序列与萨卡古提虫的ITS序列100％相同。这些结果证明了这两个实体的特异性，Z。boninensis成为正确的名称。此外，Z。boninensis var.。从日本琉球群岛的Am美大岛岛重新描述了一种放线花型放线放线TT.Yukawa。

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    Tomohisa Yukawa; Yumi Yamashita; Koji Takayama; Dairo Kawaguchi; Chie Tsutsumi; Huai-Zhen Tian; Hidetoshi Kato;

  • 作者单位

    Tsukuba Botanical Garden, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Ibaraki 305-0005, Japan;

    Tsukuba Botanical Garden, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Ibaraki 305-0005, Japan;

    Department of Botany, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan;

    Ogasawara Branch Office, Bureau of General Affairs, Tokyo Metropolitan Government, Chichijima, Ogasawara-mura, Tokyo 100-2101, Japan;

    Tsukuba Botanical Garden, National Museum of Nature and Science, Amakubo 4-1-1, Tsukuba, Ibaraki 305-0005, Japan;

    School of Life Sciences, East China Normal University, Shanghai 200241, China;

    Department of Biological Sciences, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan;

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  • 关键词

    Japan; new record; new variety; Ogasawara Islands; Orchidaceae; taxonomy; Zeuxine;

    机译：日本;新纪录;新品种小gas原群岛;兰科;分类;Zeuxine;

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