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KMID : 0368420080510010020
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Journal of Plant Biology
2008 Volume.51 No. 1 p.20 ~ p.24
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Reappraisal ofDiplolabellum coreanum (orchidaceae) as inferred from molecular data
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Eum Sang-Mi
Yukawa Tomohisa
Luo Yibo
Freudenstein John V.
Lee Nam-Sook
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Abstract
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The taxonomic treatment of a monotypic genus,Diplolabellum, has been disputed by various authors. Maekawa (1935) described the genus on the basis ofOreorchis coreana IFinet. Because distribution of its plants is very limited, i.e., to Jeju Island of the South Korean Peninsula, it has not been well studied. To reappraise the phylogenetic relationship ofDiplolabellum coreanum Finet, we obtained ITS,matK, trnT-trnL, andtrnL-trnF sequences from several species ofOreorchis and related genera. Sequence analysis showed thatD. coreanum is closely related to one group ofOreorchis that consists ofO. patens Lindle andO. fargesii Finet. Therefore, our molecular data support treating the species asO. coreana rather than asD. coreanum, even though the latter genus is distinct fromOreorchis in morphological characters such as callus, pedicel, column, and caudicle.
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KEYWORD
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Diplolabellum coreanum, ITS, matK, phylogenetic relationship, trnL-trnF, trnT-trnL
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