| 紫乌头复合体nrDNA的ITS序列与系统发育分析 |
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| 引用本文： | 张富民,葛颂,陈文俐.紫乌头复合体nrDNA的ITS序列与系统发育分析[J].植物分类学报,2003,41(3):220-228. |
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| 作者姓名： | 张富民 葛颂 陈文俐 |
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| 作者单位： | 1. 中国科学院植物研究所系统与进化植物学重点实验室,北京,100093
2. 中国科学院植物研究所,北京,100093 |
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| 基金项目： | 国家自然科学基金 ( 3 0 0 70 0 5 7)，中国科学院KSCXZ-SW-1 0 1A项目支持~~ |
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| 摘 要： | 对乌头属 Aconitum L. 27个类群的nrDNA ITS序列进行了简约法与邻接法分析，两种方法得到的系统发育树基本一致。乌头亚属subgen. Aconitum 的蔓乌头系 ser. Volubilia 不是一个单系类群，显柱乌头系 ser. Stylosa 与兴安乌头系ser. Ambigua 各自作为单系类群也没有得到支持。特产于云南西北部横断山区的一些种之间存在非常近的系统发育关系，说明这些种可能是近期物种形成的产物。紫乌头 A. delavayi 复合体的不同类群在系统发育树上位
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| 关 键 词： | 乌头属 紫乌头复合体 横断山区 |
| 修稿时间： | 2003年1月21日 |
Phylogeny of the Aconitum delavayi complex (Ranunculaceae)based on evidence from nuclear ribosomal ITS sequences |
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| ZHANG Fu-Min,GE Song,CHEN Wen-Li.Phylogeny of the Aconitum delavayi complex (Ranunculaceae)based on evidence from nuclear ribosomal ITS sequences[J].Acta Phytotaxonomica Sinica,2003,41(3):220-228. |
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| Authors: | ZHANG Fu-Min GE Song CHEN Wen-Li |
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| Affiliation: | ZHANG Fu-Min 1GE Song* 2CHEN Wen-Li 1 |
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| Abstract: | Internal transcribed spacer (ITS) sequences of nuclear ribosomal DNA (nr DNA) were used to investigate the phylogeny of the Aconitum delavayi complex that was found mainly in Hengduan Mountains, SW China. Based on maximum parsimony and neighbor-joining analyses, we reconstructed the phylogenetic relationships of 27 taxa of Aconitum including 8 taxa of the A. delavayi complex. The two methods generated similar ITS trees, which showed that ser. Volubilia could not be a monophyletic group and that ser. Stylosa could hardly be distinguished from ser. Ambigua. Such results indicate that the present serial delimitation of the subgenus Aconitum made by Wang in Flora Reipublicae Popularis Sinicae is problematic. The close phylogenetic relationships among some species endemic to the Hengduan Mountains in NW Yunnan may be attributed to the recent speciation events of Aconitum species in this area. The Aconitum delavayi complex that mainly occurs in the Hengduan Mountains is separated into three clades in the ITS trees, implying that the complex is not a natural lineage in terms of genetic relationships. Of the three clades, the one including A. episcopale is quite distinct from the clade consisting of A. delavayi, A. tuguancunense, A. stapfianum and A. vilmorinianum, although they are all mainly distributed in NW Yunnan and there is a high degree of morphological similarity among them. Another clade includes A. campylorrhynchum and A. sungpanense from NW Sichuan, NE Chongqing and Shaanxi. Consequently, the A. delavayi complex is not a monophyletic group and may have originated from three different lineages. |
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| Keywords: | Aconitum A delavayi complex Hengduan Mountains nuclear ribosomal ITS sequences phylogeny |
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