睡莲类植物ITS nrDNA序列的分子系统发育分析

唐先华; 张晓艳; 施苏华; 钟扬; 赖旭龙

睡莲类植物ITS nrDNA序列的分子系统发育分析

1.
中国地质大学地球科学学院，湖北武汉 430074
2.
复旦大学生物多样性科学研究所，上海 200433
3.
中山大学生命科学学院，广东广州 510275

基金项目: 湖北省地球表层系统开放实验室资助项目

详细信息

作者简介:
唐先华(1970—)，女，博士研究生，主要研究方向为分子古生物.E-mail: xianhuat@sohu.com

中图分类号: Q91
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- 被引次数: 0
出版历程
- 收稿日期: 2002-05-28
- 刊出日期: 2003-01-25

A Preliminary Phylogenetic Analysis of ITS nrDNA Sequences in Water-lilies

1.
Faculty of Earth Sciences, China University of Geosciences, W uhan 430074, China
2.
Institute of Biodiversity Science, Fudan University, Shanghai 200433, China
3.
College of L ife Sciences, Zhongshan University, Guangz hou 510275, China

摘要

摘要: 睡莲类植物是目前植物分子系统学与进化研究的一个重要类群.核基因组的ITS区是核核糖体(nrDNA) 转录单位的一部分.测定和分析了5个属的7种睡莲类植物的核核糖体ITS序列, 并与GenBank中提取的相关序列进行了组合分析, 初步获得了睡莲类植物的2个ITS系统树, 结果也支持现有分子系统学研究中有关金鱼藻处于较原始位置的观点.
- 睡莲类 /
- ITS序列 /
- 分子系统树
Abstract: Water-lily plants are key group on study of the flowering plant phylogeny. The internal transcribed spacers (ITS) and the 5.8S coding region of nuclear ribosomal DNA (nrDNA) of seven taxa were sequenced to study molecular phylogeny and evolution of Nymphaeales sensu lato. The ITS phylogenetic trees were constructed based on the sequences and a combined data set with sequences from GenBank. The results obtained from ITS sequences also supported that the genus Ceratophyllum could be considered the ancestral group in the order, as the results of most molecular systematic studies.
- water-lilies (Nymphaeales sensu lato) /
- ITS sequence /
- molecular phylogenetic tree

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图 1 用简约法和邻接法构建的ITS系统树

数字表示各分支自展数据支持率; *表示外类群, 分类群缩写见表 1, 左为MP, 右为NJ

Fig. 1. ITS phylogenetic trees using maximum parsimony and neighbor-joining methods

下载: 全尺寸图片幻灯片

图 2 用简约法构建的ITS系统树(组合数据集)

数字表示各分支自展数据支持率; *表示外类群; 分类群缩写见表 1; 右边斜体为属名

Fig. 2. ITS phylogenetic trees using maximum parsimony (combined data set)

下载: 全尺寸图片幻灯片

表 1 实验材料的种名、缩写及来源

Table 1. Species, abbreviation and source

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