| Molecular phylogeny of Chinese Rubia (Rubiaceae: Rubieae) inferred from nuclear and plastid DNA sequences | |
Yang, Li-E1,2; Sun, Hang1 ; Ehrendorfer, Friedrich3; Nie, Ze-Long4
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| 2016 | |
| 发表期刊 | JOURNAL OF SYSTEMATICS AND EVOLUTION
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| 卷号 | 54期号:1页码:37-47 |
| 摘要 | Rubia L. is the type genus of the coffee family Rubiaceae and the third largest genus in the tribe Rubieae, comprising ca. 80 species restricted to the Old World. China is an important diversity center for Rubia, where approximately half of its species occur. However, its internal phylogenetic relationships are still poorly understood. The objective of the present study is to contribute to the phylogenetic relationships within Rubia, using the nuclear internal transcribed spacer and six plastid markers and focusing on species from China. Twenty-seven species of Rubia were sampled to infer their phylogeny using Maximum parsimony, Maximum likelihood, and Bayesian analyses. The monophyly of Rubia is supported, provided that R. rezniczenkoana Litv. is excluded from Rubia and transferred to Galium as a new combination: G. rezniczenkoanum (Litv.) L. E Yang & Z. L. Nie. Within Rubia, two clades are clearly supported. They correspond to the traditional sect. Rubia s.l. (A) and sect. Oligoneura Pojark. (B), and are morphologically mainly separable by their pinnate (A) versus palmate (B) leaf venation. Plesiomorphic features are the pinnate leaf veining in sect. Rubia s. l. and the occurrence of some species with opposite leaves and true stipules in sect. Oligoneura. In sect. Oligoneura one can assume an evolution from species with opposite leaves and true stipules (as in the R. siamensis Craib group) to those with whorls of two leaves and two leaf-like stipules (as in ser. Chinenses and the R. mandersii Collett & Hemsl. group) and finally with whorls of 6 or even more elements (as in ser. Cordifoliae). The correlation between clades recognized by DNA analyses and available differential morphological features is partly only loose, particularly in the group of R. cordifolia with 2x, 4x, and 6x cytotypes. This may be due to rapid evolutionary divergence and/or hybridization and allopolyploidy. |
| 关键词 | Molecular Phylogeny Rubieae Morphology (Leaves Taxonomy Stipules) |
| DOI | 10.1111/jse.12157 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000372910100004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/26197 |
| 专题 | 中国科学院东亚植物多样性与生物地理学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Div & Biogeog East Asia, Kunming 650201, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Vienna, Dept Systemat & Evolutionary Bot, A-1030 Rennweg 14, Austria 4.Jishou Univ, Coll Biol & Environm Sci, Key Lab Plant Resources Conservat & Utilizat, Jishou 416000, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Li-E,Sun, Hang,Ehrendorfer, Friedrich,et al. Molecular phylogeny of Chinese Rubia (Rubiaceae: Rubieae) inferred from nuclear and plastid DNA sequences[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2016,54(1):37-47. |
| APA | Yang, Li-E,Sun, Hang,Ehrendorfer, Friedrich,&Nie, Ze-Long.(2016).Molecular phylogeny of Chinese Rubia (Rubiaceae: Rubieae) inferred from nuclear and plastid DNA sequences.JOURNAL OF SYSTEMATICS AND EVOLUTION,54(1),37-47. |
| MLA | Yang, Li-E,et al."Molecular phylogeny of Chinese Rubia (Rubiaceae: Rubieae) inferred from nuclear and plastid DNA sequences".JOURNAL OF SYSTEMATICS AND EVOLUTION 54.1(2016):37-47. |
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