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Generic delimitation and biogeography of Maianthemum and Smilacina (Ruscaceae sensu lato): Preliminary results based on partial 3′ matK gene and trnK 3′ intron sequences of cpDNA

Title
Generic delimitation and biogeography of Maianthemum and Smilacina (Ruscaceae sensu lato): Preliminary results based on partial 3′ matK gene and trnK 3′ intron sequences of cpDNA
Authors
Kim S.-C.Lee N.S.
Ewha Authors
이남숙
SCOPUS Author ID
이남숙scopus
Issue Date
2007
Journal Title
Plant Systematics and Evolution
ISSN
0378-2697JCR Link
Citation
vol. 265, no. 41276, pp. 1 - 12
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
The controversy over generic delimitation between Maianthemum and Smilacina has been unresolved for almost two centuries. Distributions of the two genera in the Northern Hemisphere also provide an excellent opportunity to further understand the disjunct distribution patterns of the North Temperate Flora. To test the generic delimitation and to investigate biogeographic patterns, we sequenced the partial 3′ matK gene and trnK 3′ intron of chloroplast DNA for 38 accessions, representing three species of Maianthemum, seven species of Smilacina, and four outgroup taxa. Maximum parsimony and neighbor-joining trees showed reciprocal monophyly of the two genera with very weak bootstrap support for each genus. Within each genus, relationships among species were poorly resolved. Despite its low resolution, this study shows that eastern Asian species of Smilacina and Maianthemum are generally more closely related to eastern North American taxa than to western ones. More detailed sampling of Smilacina from different geographic regions, especially from the two centers of diversity (southeastern Asia and Mexico/Central America), and additional sequences from cpDNA, as well as from nuclear DNA, are needed to test the reciprocal monophyly of the two genera and also to understand current distributions of disjunct taxa. © 2007 Springer-Verlag.
DOI
10.1007/s00606-007-0517-2
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자연과학대학 > 생명과학전공 > Journal papers
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