Molecular phylogenetics of Caryophyllales based on nuclear 18S rDNA and plastid rbcL, atpB, and matK DNA sequences
Molecular phylogenetics of Caryophyllales based on nuclear 18S rDNA and plastid rbcL, atpB, and matK DNA sequences
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DOI：
10.3732/ajb.89.1.132
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发表时间：
2002-01-01
影响因子：
3
通讯作者：
Chase, MW
中科院分区：
文献类型：
--
作者：
Cuénoud, P;Savolainen, V;Chase, MW
研究石竹目的科间和科下系统发育关系。类似于930个碱基对的matK叶绿体基因已经被测序，并分析了127个分类群。此外，主题序列与53个分类群的rbcL叶绿体基因以及26个分类群的rbcL和atpB叶绿体基因以及核18S rDNA结合，为更深层次的分支提供更多的支持。经测试，该目植物的红色色素属于Betacyanin类化合物，该目的大多数分类群明确地分为两个主要分支(即，)。“核心的”和“非核心的”石竹科)，它们又被划分成定义明确的商陆亚基和香石竹亚基，是多系植物。马齿苋科和马齿马齿科为副系，而马齿马齿科、芭蕉科为副系。Petiveriaceae和Sarcobataceae应该得到家族的认可另外两个谱系可能适合在未来提升到科的水平：根据分子和化学证据，Loplocarpus属和Corbihonia属形成一个很好的支系，根据分子和超微结构数据，Limeum似乎与其他Molluginaccae相分离。
To study the inter- and infrafamilial phylogenetic relationships in the order Caryophyllales sensu lato (S.].) similar to930 base pairs of the matK plastid gene have been sequenced and analyzed for 127 taxa. In addition, theme sequences have been combined with the rbcL plastid gene for 53 taxa and with the rbcL and atpB plastid genes as well as the nuclear 18S rDNA for 26 taxa to provide increased support for deeper branches. The red pigments of Corbichonia, Lophiocarpus, and Sarcobatus have been tested and shown to belong to the betacyanin class of compounds Most taxa of the order are clearly grouped into two main clades (i.e.. "core" and "noncore" Caryophyllates) which are, in turn, divided into well-defined subunits Phytolaccaceae and Molluginaceae are polyphyletic. and Portulacaceae are paraphyletic, whereas Agdestidaceae, Barbeuiaceae. Petiveriaceae, and Sarcobataceae should be given familial recognition Two additional lineages are potentially appropriate to be elevated to the family level in the future: the genera Lophlocarpus and Corbichonia form a well-supported clade on the basis of molecular and chemical evidence, and Limeum appears to be separated from other Molluginaccae based on both molecular and ultrastructural data.