Systematics of the Halimolobine Brassicaceae: Evidence from Three Loci and Morphology
Systematics of the Halimolobine Brassicaceae: Evidence from Three Loci and Morphology
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哈利莫洛宾十字花科的系统学：来自三个基因座和形态学的证据
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
J. Doyle
中科院分区：
文献类型：
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作者：
C. Bailey;R. Price;J. Doyle
摘要海蛞蝓属、曼科属、滨藜属和球豆蔻属植物之间的亲缘关系一直存在争议。更高层次的研究，使用叶绿体编码ndhF和trnL内含子的cpDNA数据，表明这些属的一些物种代表一个单系群：halimolobine分支。这里提出的研究重点是halimolobine分支与密集的内部和种间采样。该项目的主要目的是：（1）进一步测试halimolobine分支的单系性;（2）测试Halimolobos，Mancoa，Pennellia和Sphaerocardamum的单系性;（3）研究分支中形态特征的进化。数据来自trnL-F区域、nrDNA ITS、pistillata内含子1和17个非分子特征。将这些数据纳入同步分析的困难进行了讨论，并提出了一种策略。单独和同时分析证实了一个单系的核心组halimolobine物种。严格的一致性树包含5个支持度很高的盐芥亚科：Sphaerocardamum，Pennellia plus Arabis tricornuta，Mancoa bracteata plus M. foliosa，一个狭义的Halimolobos，和一个分支组成的一个子集的Halimolobos和Mancoa物种。个体的形态特征在分类上的效用各不相同。然而，大多数的字符提供了一些分组信息内的halimolobine分支。编辑：Paul Wilson
Abstract Relationships among Halimolobos, Mancoa, Pennellia, and Sphaerocardamum have been controversial. Higher level studies, using cpDNA data from the chloroplast encoded ndhF and trnL intron, suggested that some species of these genera represent a monophyletic group: the halimolobine clade. The research presented here focuses on the halimolobine clade with denser intra and inter-specific sampling. The primary aims of the project were: (1) to further test the monophyly of the halimolobine clade; (2) to test the monophyly Halimolobos, Mancoa, Pennellia, and Sphaerocardamum; and (3) to study the evolution of morphological characters in the clade. Data were generated from the trnL-F region, nrDNA ITS, pistillata intron one, and 17 non-molecular characters. The difficulties associated with incorporating these data into simultaneous analyses are discussed and a strategy is presented. Separate and simultaneous analysis confirmed a monophyletic core group of halimolobine species. The strict consensus tree contained five well-supported halimolobine subclades: Sphaerocardamum, Pennellia plus Arabis tricornuta, Mancoa bracteata plus M. foliosa, a narrowly defined Halimolobos, and a clade consisting of a subset of Halimolobos and Mancoa species. Individual morphological characters vary in their utility for classification of the group. However, the majority of the characters provide some grouping information within the halimolobine clade. Communicating Editor: Paul Wilson