Phylogeny and Androecial Evolution in Schisandraceae, Inferred from Sequences of Nuclear Ribosomal DNA ITS and Chloroplast DNAtrnL‐F Regions
| Autor: | Leonard B. Thien, An-Ming Lu, Zhi-Duan Chen, Yi-Bo Luo, Samuel W. Rosso, Zhong Liu, Gang Hao |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | International Journal of Plant Sciences. 167:539-550 |
| ISSN: | 1537-5315 1058-5893 |
| DOI: | 10.1086/501476 |
| Popis: | Sequences of nuclear ribosomal DNA ITS and chloroplast trnL‐F regions were used to construct a phylogeny of Schisandraceae. The results show that there are two major clades in Schisandraceae. One is composed entirely of Schisandra species; the other contains a mixture of Schisandra and Kadsura species. Molecular data place Smith’s sect. Sphaerostema of Schisandra prominently within Kadsura, and thus neither Schisandra nor Kadsura is monophyletic, refuting the traditional division of the family into two genera based on morphological characters of mature fruits. The sister relationship between S. glabra (North America) and S. bicolor (China) and the monophyly of sect. Sphaerostema and sect. Kadsura are strongly supported. The trnL‐F and combined data sets yield phylogenetic trees that are well resolved and concordant with androecial types of staminate flowers; however, they do not support the evolutionary pathways for androecia constructed by previous authors for Kadsura and Schisandra. The new alignment of... |
| Databáze: | OpenAIRE |
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