植物分类学报    2008 46 (3): 333-340    ISSN: 0529-1526  CN: 11-1897/Q  首页     当期目录 上一期    下一期

 
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低拷贝核基因序列支持桦木科铁木属为单系鹅耳枥属为并系

1 2李建华

1(The Arnold Arboretum of Harvard University, 22 Divinity Avenue, Cambridge, MA 02138, USA)
2(Adjunct Faculty of College of Life Sciences, Zhejiang University, Hangzhou 310029, China)

收稿日期 2008-2-26   修回日期 2008-5-6   网络版发布日期  2008-5-9   接受日期 
摘要  Coryloideae consists of four genera: Corylus, Ostryopsis, Carpinus, and Ostrya. While both molecular and non-molecular data support the close relationship of Carpinus and Ostrya, the monophyly of the two genera has remained controversial. In this study, sequences of the nuclear nitrate reductase (Nia) were used to test the naturalness of the two genera. Ostrya species form a robust clade, supporting the monophyly of the genus. The clade, however, is located between Carpinus cordata and the remaining species of Carpinus, indicating that Carpinus is paraphyletic, and Ostrya has evolved from within Carpinus. Within Carpinus, section Distegocarpus is polyphyletic, whereas section Carpinus is a clade where subsections Polyneurae and Carpinus are more closely related to each other than either is to subsection Monbeigianae.

关键词
   Carpinus   nitrate reductase (Nia)   monophyly   Ostrya   paraphyly  
分类号
DOI:  10.3724/SP.J.1002.2008.08026
 

通讯作者:
李建华 jli@oeb.harvard.edu
作者个人主页: 1 2李建华