Molecular systematics of the Cactaceae
Molecular systematics of the Cactaceae
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DOI：
10.1111/j.1096-0031.2011.00350.x
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发表时间：
2011-10-01
期刊：
影响因子：
3.6
通讯作者：
Hawkins, Julie A.
中科院分区：
文献类型：
--
作者：
Barcenas, Rolando T.;Yesson, Chris;Hawkins, Julie A.
贝叶斯，最大似然，和最大简约的遗传学，使用从质体基因区trnK-matK的核苷酸序列构建，调查仙人掌科内的关系。这些植物标本666种，代表该科1438种中的532种。所有四个亚科，所有九个部落，和69%的仙人掌科目前公认的属采样。我们发现，目前公认的四个亚家族的三个强有力的支持，虽然亚家族之间的关系没有得到很好的定义。主要分支内恢复最大的亚科，仙人掌亚科和仙人掌亚科，进行了审查;目前在这些亚科内划分的9个公认族中只有3个是单系的，即仙人掌族、假眼仙人掌族和仙人掌族，尽管仙人掌族仅在贝叶斯和最大似然分析中被恢复，而不是在最大简约分析中，并且需要更多的数据来揭示仙人掌族的地位，可能是单系的在我们研究的42个属中，只有17个属是单系的，其中14个属来自仙人掌亚科，3个属来自仙人掌亚科。我们提出了一个概要的地位，目前公认的属。(C)2011年的Willi Hennig Society。
Bayesian, maximum-likelihood, and maximum-parsimony phylogenies, constructed using nucleotide sequences from the plastid gene region trnK-matK, are employed to investigate relationships within the Cactaceae. These phylogenies sample 666 plants representing 532 of the 1438 species recognized in the family. All four subfamilies, all nine tribes, and 69% of currently recognized genera of Cactaceae are sampled. We found strong support for three of the four currently recognized subfamilies, although relationships between subfamilies were not well defined. Major clades recovered within the largest subfamilies, Opuntioideae and Cactoideae, are reviewed; only three of the nine currently accepted tribes delimited within these subfamilies, the Cacteae, Rhipsalideae, and Opuntieae, are monophyletic, although the Opuntieae were recovered in only the Bayesian and maximum-likelihood analyses, not in the maximum-parsimony analysis, and more data are needed to reveal the status of the Cylindropuntieae, which may yet be monophyletic. Of the 42 genera with more than one exemplar in our study, only 17 were monophyletic; 14 of these genera were from subfamily Cactoideae and three from subfamily Opuntioideae. We present a synopsis of the status of the currently recognized genera. (C) The Willi Hennig Society 2011.