Taxonomic study of Angelica from East Asia:: Inferences from ITS sequences of nuclear ribosomal DNA
Taxonomic study of Angelica from East Asia:: Inferences from ITS sequences of nuclear ribosomal DNA
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DOI：
10.1360/aps06058
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发表时间：
2007-11-01
期刊：
影响因子：
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通讯作者：
Wu Guo-Rong
中科院分区：
文献类型：
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作者：
Xue Hua-Jie;Yan Mao-Hua;Wu Guo-Rong
为了解决当归属植物种间的亲缘关系，对当归属植物进行了分类学研究。本文以东亚地区44个分类群及其近缘属为研究对象，利用ITS序列分析了它们的序列差异，并构建了3个系统发育树。三个分类群被用作外群。可以得出以下一些结论。(1)安吉莉卡公司，Czernaevia与Coelopleurum亲缘关系较近，而Ostericum与它们的亲缘关系较远。果实解剖结构和化学成分分析也支持了这一观点。Ostericum被认为是一个相对独立的属。(2)ITS序列分析结果支持Angelica s.s.为单系，可分为几个组。(3)ITS序列分析和化学成分分析结果表明，前胡属与当归属的亲缘关系较近。非常接近(4)ITS序列以及构象和化学组成的结果表明，A. sinensis与当归属其他分类群的区别。太棒了本文讨论了A.中国应该重新考虑。(5)ITS序列分析和化学成分分析均表明，该属不是一个自然类群。
In order to resolve the relationships among species from Angelica s.s. and its allied genera in East Asia, ITS (Internal Transcribed Spacer) sequences of 44 taxa were used to analyze their sequence divergence and to construct three phylogenetic trees in this paper. Three taxa were used as the outgroup. Some conclusions could be achieved as follows. (1) Angelica s.s., Czernaevia, and Coelopleurum were closely related, but the relationship between Ostericum and them was ulterior. It was also supported by analyses on fruit anatomy and chemical constitutes. Ostericum was proposed as a relatively independent genus. (2) Results from ITS sequences supported the view that Angelica s.s. was monophyletic and could be divided into several sections. (3) Results from ITS sequences and chemical constitutes indicated that the relationship between Peucedanum and Angelica s.s. was very close. (4) Results from ITS sequences as well as from conformation and chemical constitutes showed that the divergence of A. sinensis from other taxa of Angelica s.s. was great. The taxonomic position of A. sinensis should be reconsidered. (5) Both analyses of ITS sequences and chemical constitutes revealed that Ligusticum was not a natural group.