Phylogenetic Position and Generic Limits of Arabidopsis (Brassicaceae) Based on Sequences of Nuclear Ribosomal DNA
Phylogenetic Position and Generic Limits of Arabidopsis (Brassicaceae) Based on Sequences of Nuclear Ribosomal DNA
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DOI：
10.2307/3298545
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发表时间：
2003-01
影响因子：
1.9
通讯作者：
S. L. O'kane;I. Al‐Shehbaz
中科院分区：
文献类型：
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作者：
S. L. O'kane;I. Al‐Shehbaz
这项研究的主要目的是评估拟南芥的属界和单系性，并调查其与十字花科相关类群的关系。核糖体DNA的内部转录间隔区(ITS-1和ITS-2)序列，包括5.8S rDNA，被用于最大简约分析以构建系统发育树。有人试图将目前或最近列入拟南芥的所有物种，以及被认为是近亲的物种包括在内。我们的发现表明，传统上认为的拟南芥是多种多样的。根据我们的结果重新划定了该属，(1)现在包括以前放在豆蔻属和Hylandra属的种以及阿拉伯属的三种，(2)不包括现在放在Crucihimalaya，Beringia，Olimarabidopsis，Pseudoarabidopsis和lanhedgea的种。
The primary goals of this study were to assess the generic limits and monophyly of Arabidopsis and to investigate its relationships to related taxa in the family Brassicaceae. Sequences of the internal transcribed spacer region (ITS-1 and ITS-2) of nuclear ribosomal DNA, including 5.8S rDNA, were used in maximum parsimony analyses to construct phylogenetic trees. An attempt was made to include all species currently or recently included in Arabidopsis, as well as species suggested to be close relatives. Our findings show that Arabidopsis, as traditionally recognized, is polyphyletic. The genus, as recircumscribed based on our results, (1) now includes species previously placed in Cardaminopsis and Hylandra as well as three species of Arabis and (2) excludes species now placed in Crucihimalaya, Beringia, Olimarabidopsis, Pseudoarabidopsis, and lanhedgea.