生物多样性 ›› 2017, Vol. 25 ›› Issue (2): 175-181.DOI: 10.17520/biods.2016183

所属专题: 生物多样性与生态系统功能

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系统发育多样性在植物区系研究与 生物多样性保护中的应用

慈秀芹, 李捷*()   

  1. 中国科学院西双版纳热带植物园综合保护中心植物系统发育与保护生物学实验室, 昆明 650223
  • 收稿日期:2016-07-12 接受日期:2016-10-16 出版日期:2017-02-20 发布日期:2017-03-06
  • 通讯作者: 李捷
  • 基金资助:
    国家自然科学基金(31500454)

Phylogenetic diversity and its application in floristics and biodiversity conservation

Xiuqin Ci, Jie Li*()   

  1. Plant Phylogenetics and Conservation Group, Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223
  • Received:2016-07-12 Accepted:2016-10-16 Online:2017-02-20 Published:2017-03-06
  • Contact: Li Jie

摘要:

利用系统发育关系从进化角度理解物种的组成、分布格局对可为有效保护和合理利用生物多样性提供科学依据。以支长为基础的系统发育多样性是最基本的测度指数, 由此衍生出的几十个参数加大了选择难度。根据具体研究的问题选择合适的指标, 是目前最为可行的方案, 已经在植物系统发育区系研究和生物多样性保护中取得了一系列研究成果。DNA序列迅速积累特别是DNA条形码项目在全球的大力发展, 提供了海量的标准化数据, 为构建解决能力较好的宏系统发育树提供了可能。但是围绕系统发育多样性开展的相关研究还需要更多的物种分布、环境因子、气候等基础数据, 同时对其在生态系统功能上的表征作用需要进一步验证。

关键词: 进化历史, DNA条形码, 宏系统发育树, 多样性, 区系, 保护

Abstract:

The application of phylogenetic relationships helps us to understand species composition and species distribution patterns, which provide a scientific basis for the effective protection and sustainable use of biological diversity. Phylogenetic diversity (PDfaith), based on branch lengths of the phylogenetic tree, is the most basic measurement index. Many indices are derived from PDfaith, which makes difficult to choose the most appropriate parameters. The most effective and feasible way is to select suitable indices based on specific research questions, and some examples have been presented in plant phylofloristics and biodiversity conservation. DNA sequences have rapidly accumulated particularly through the global DNA barcoding project, which provides a standardized mass data, and can be used to reconstruct mega-phylogeny. But studies conducted around the phylogenetic diversity require more information, specifically data on species distribution, environmental factors, and climatic data. In addition, some fundamental questions need to be verified, such as the relationship between phylogenetic diversity and ecosystem functions.

Key words: evolutional history, DNA barcoding, megaphylogeny, biodiversity, flora, conservation