| 睡莲类植物ITS nrDNA序列的分子系统发育分析 |
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| 引用本文： | 唐先华,张晓艳,等.睡莲类植物ITS nrDNA序列的分子系统发育分析[J].地球科学,2003,28(1):97-101. |
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| 作者姓名： | 唐先华 张晓艳 |
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| 作者单位： | [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 |
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| 基金项目： | 湖北省地球表层系统开放实验室资助项目 |
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| 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。
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| 关 键 词： | 睡莲类植物 ITS序列 分子系统树 DNA分子 金鱼藻 古生物 核核糖体 |
| 文章编号： | 1000-2383(2003)01-0097-05 |
A Preliminary Phylogenetic Analysis of ITS nrDNA Sequences in Water-lilies |
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| TANG Xian hua ,ZHANG Xiao yan ,SHI Su hua ,ZHONG Yang ,LAI Xu long.A Preliminary Phylogenetic Analysis of ITS nrDNA Sequences in Water-lilies[J].Earth Science-Journal of China University of Geosciences,2003,28(1):97-101. |
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| Authors: | TANG Xian hua ZHANG Xiao yan SHI Su hua ZHONG Yang LAI Xu long |
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| Institution: | TANG Xian hua 1,ZHANG Xiao yan 2,SHI Su hua 3,ZHONG Yang 2,LAI Xu long 1 |
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| 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. |
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| Keywords: | water lilies (Nymphaeales sensu lato ) ITS sequence molecular phylogenetic tree |
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