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Phylogeny and comparative seed morphology of epiphytic and terrestrial species of Liparis (Orchidaceae) in Japan

Title
Phylogeny and comparative seed morphology of epiphytic and terrestrial species of Liparis (Orchidaceae) in Japan
Authors
Tsutsumi C.Yukawa T.Lee N.S.Lee C.S.Kato M.
Ewha Authors
이남숙
SCOPUS Author ID
이남숙scopus
Issue Date
2007
Journal Title
Journal of Plant Research
ISSN
0918-9440JCR Link
Citation
vol. 120, no. 3, pp. 405 - 412
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
To elucidate the evolution of epiphytes in Liparis section Liparis, we examined the phylogenetic relationships of 16 species by using internal transcribed spacer regions of 18S-26S nuclear ribosomal DNA (ITS) and three chloroplast DNA regions (trnS-trnG spacer, trnL with trnL-trnF spacer, and partial matK). Results showed that the epiphytic L. fujisanensis is sister to the terrestrial L. koreana and L. kumokiri, while another epiphyte, L. truncata, is sister to the terrestrial L. krameri. Therefore, the two epiphytic species evolved from terrestrial species independently in section Liparis. Comparative seed morphology revealed that the epiphytes have larger embryos than their closely related terrestrial counterparts. A similar trend toward the increase of embryo size in the two epiphytic species belonging to closely related, but distinct clades suggests that the large embryo may have an advantage in the epiphytic lifestyle. The two epiphytic species share another character state, smaller air spaces in the seed than that of closely related terrestrial species, suggesting possible low dispersibility of the epiphytes. © The Botanical Society of Japan and Springer 2007.
DOI
10.1007/s10265-007-0077-0
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자연과학대학 > 생명과학전공 > Journal papers
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