生物技术通报 ›› 2013, Vol. 0 ›› Issue (8): 68-73.

• 研究报告 • 上一篇    下一篇

基于ITS序列探讨10种荨麻科植物的系统发育关系

侯新东1, 2, 尹帅1, 盛桂莲1, 2, 程丹丹1, 赖旭龙2   

  1. (1.中国地质大学环境学院,武汉 430074;2.生物地质与环境地质国家重点实验室,武汉 430074)
  • 收稿日期:2013-04-07 修回日期:2013-08-11 出版日期:2013-08-11 发布日期:2013-09-02
  • 作者简介:侯新东,男,博士研究生,讲师,研究方向:生物化学与分子古生物;E-mail:houxd@cug.edu.cn
  • 基金资助:
    中央高校基本科研业务费专项资金项目(CUGL110219), 国家自然科学基金青年科学基金项目(41202013)

Study on Phylogenetic Relationships of Ten Urticaceae Species Based on nrDNA ITS Sequences

Hou Xindong1, 2 Yin Shuai1 Sheng Guilian1, 2 Cheng Dandan1 Lai Xulong2   

  1. (1. School of Environmental Studies China University of Geosciences,Wuhan 430074;2. State Key Laboratory of Biogeology and Environmental Geology,Wuhan 430074)
  • Received:2013-04-07 Revised:2013-08-11 Published:2013-08-11 Online:2013-09-02

摘要: 以庐山地区12种荨麻科植物为试验材料,开展ITS序列研究,探讨该序列作为荨麻科植物系统发育研究的可行性及传统植物分类与分子系统分类的异同。通过PCR扩增和克隆产物测序,获得10种荨麻科植物的ITS序列。利用MEGA4.0软件,以滇藏荨麻为外类群,采用NJ和MP法构建系统树结果一致,明显分为3个分支,楼梯草族、苎麻族和荨麻族分别构成一支。研究结果表明用ITS序列对荨麻科植物进行系统发育研究是可行的;利用分子技术所得到的系统发育结果与传统形态学的分类结果基本一致。

关键词: 核糖体DNA, ITS, 荨麻科, PCR扩增, 系统发育分析

Abstract: In this study, we collected 12 Urticaceae plants from Lushan mountain area to carry out the study of internal transcribed spacer(ITS)sequences, and thus further explore the feasibility as a study of the Urticaceae Phylogeny using ITS sequences, as well as the similarities and differences of traditional plant taxonomy and molecular systematics. We obtained the sequences of nrDNA ITS from 10 species of Urticaceae by PCR amplification and clone sequencing. For phylogenetic analyses using MEGA 4.0 software, both NJ and MP trees of Urticaceae were constructed with U.marirei as outgroup. The two methods produced trees with absolutely congruent topology. These phylogenetic trees showed three separate lineages:(1)Elatostemeae, (2)Boehmerieae, (3)Urticeae. The results suggested that it is feasible to research the phylogenetic of Urticaceae plants using ITS sequences. The results were basically consistent about the phylogenetic using molecular techniques and traditional morphology classification.

Key words: nrDNA, ITS, Urticaceae, PCR amplication, Phylogenetic analysis