A supermatrix approach provides a comprehensive genus‐level phylogeny for Gentianales
A supermatrix approach provides a comprehensive genus‐level phylogeny for Gentianales
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DOI：
10.1111/jse.12192
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发表时间：
2016-07
影响因子：
3.7
通讯作者：
Leilei Yang;Hong‐Lei Li;Lei Wei;Tuo Yang;Dai-Yong Kuang;Minghong Li;Yi-Ying Liao;Zhiduan Chen;Hong Wu;Shouzhou Zhang
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文献类型：
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作者：
Leilei Yang;Hong‐Lei Li;Lei Wei;Tuo Yang;Dai-Yong Kuang;Minghong Li;Yi-Ying Liao;Zhiduan Chen;Hong Wu;Shouzhou Zhang
龙胆目（Gentianales）包括夹竹桃科（Apocynaceae）、钩吻科（Gelsemiaceae）、龙胆科（Gentianaceae）、马钱科（Loganiaceae）和茜草科（Rubiaceae），其中大多数是热带和亚热带地区的木本植物。尽管广泛的努力重建龙胆目的分子数据的基础上的系统发育，一些科间和科内的关系仍然不确定。我们使用最大似然法基于8个质体标记（rbcL、matK、atpB、ndhF、rpl 16、rps 16、trnL-trnF区域和atpB-rbcL间隔区）和1个线粒体基因（matR）的超矩阵重建了龙胆目的属水平遗传。本研究检索到的主要分支和它们之间的关系与以前的研究一致。龙胆目的五个科都是单系的，并得到了强有力的支持。我们解决了茜草科的姐妹在龙胆目其余的家庭，并支持马钱科和夹竹桃科之间的姐妹关系。我们的研究结果提供了新的见解家族内分支之间的关系。例如，在Rubiaceae中，我们发现Craterispermeae与Morindeae +（Palicoureeae + Psychotrieae）是姐妹，而Theligoneae与Putorieae是姐妹。在龙胆科中，我们的系统发育研究表明，龙胆亚科是Helieae和Potalieae的姐妹族，而Lisianthiinae亚族是Potaliinae和Faroinae的姐妹族。在马钱科中，我们发现Neuburgia是Spigelieae的姐妹。在夹竹桃科，我们的研究结果支持Amsonieae作为姐妹的Melodineae，和Hunterieae作为姐妹的一个分支，包括鸡蛋花+（Carisseae + APSA）。我们还证实了Perplocoideae的单系性和Baisseeae +（Secamonoideae + Asclepiadoideae）的亲缘关系。
Gentianales consist of Apocynaceae, Gelsemiaceae, Gentianaceae, Loganiaceae, and Rubiaceae, of which the majority are woody plants in tropical and subtropical areas. Despite extensive efforts in reconstructing the phylogeny of Gentianales based on molecular data, some interfamily and intrafamily relationships remain uncertain. We reconstructed the genus‐level phylogeny of Gentianales based on the supermatrix of eight plastid markers (rbcL, matK, atpB, ndhF, rpl16, rps16, the trnL‐trnF region, and atpB‐rbcL spacer) and one mitochondrial gene (matR) using maximum likelihood. The major clades and their relationships retrieved in the present study concur with those of previous studies. All of the five families of Gentianales are monophyletic with strong support. We resolved Rubiaceae as sister to the remaining families in Gentianales and showed support for the sister relationship between Loganiaceae and Apocynaceae. Our results provide new insights into relationships among intrafamilial clades. For example, within Rubiaceae we found that Craterispermeae were sister to Morindeae + (Palicoureeae + Psychotrieae) and that Theligoneae were sister to Putorieae. Within Gentianaceae, our phylogeny revealed that Gentianeae were sister to Helieae and Potalieae, and subtribe Lisianthiinae were sister to Potaliinae and Faroinae. Within Loganiaceae, we found Neuburgia as sister to Spigelieae. Within Apocynaceae, our results supported Amsonieae as sister to Melodineae, and Hunterieae as sister to a clade comprising Plumerieae + (Carisseae + APSA). We also confirmed the monophyly of Perplocoideae and the relationships among Baisseeae + (Secamonoideae + Asclepiadoideae).