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题名: Integrating fossils in a molecular-based phylogeny and testing them as calibration points for divergence time estimates in Menispermaceae
作者: Jacques, Frederic M. B.1, 2; Wang, Wei1; Ortiz, Rosa Del C.3; Li, Hong-Lei1, 4; Zhou, Zhe-Kun2, 5; Chen, Zhi-Duan1
刊名: JOURNAL OF SYSTEMATICS AND EVOLUTION
关键词: age calibration ; cross-validation ; fossil ; Menispermaceae ; molecular scaffold ; phylogeny
英文摘要: The phylogeny of extant Menispermaceae (Ranunculales) is reconstructed based on DNA sequences of two chloroplast genes (rbcL and atpB) from 94 species belonging to 56 genera. Fossilized endocarps represent 34 genera. The positions of these are inferred using 30 morphological characters and the molecular phylogeny as a backbone constraint. Nine of the thirteen nodes that are each dated by a fossil are used as calibration points for the estimates of molecular divergence times. BEAST is used to estimate stem age (121.2 Myr) and crown age (105.4 Myr) for Menispermaceae. This method does not require an input tree topology and can also account for rate heterogeneity among lineages. The sensitivity of these estimates to fossil constraints is then evaluated by a cross-validation procedure. The estimated origin for Menispermaceae is dated to the mid-Jurassic if the customary maximum age of 125 Myr for eudicots is not implemented. All constraints when used alone failed to estimate node ages in some parts of the tree. Fossils from the Palaeocene and Eocene impose strict constraints. Likewise, the use of Prototinomiscium as a dating constraint for Menispermaceae appears to be a conservative approach.
出版日期: 2011
卷号: 49, 期号:1, 页码:25-49
DOI标识: 10.1111/j.1759-6831.2010.00105.x
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 1674-4918
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3992
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Dept Biodivers & Biogeog, Kunming 650204, Peoples R China
3.Missouri Bot Garden, St Louis, MO 63166 USA
4.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
5.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China

Recommended Citation:
Jacques, Frederic M. B.; Wang, Wei; Ortiz, Rosa Del C.; Li, Hong-Lei; Zhou, Zhe-Kun; Chen, Zhi-Duan.Integrating fossils in a molecular-based phylogeny and testing them as calibration points for divergence time estimates in Menispermaceae,JOURNAL OF SYSTEMATICS AND EVOLUTION,2011,49(1):25-49
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