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首页> 外文期刊>Genetic Resources and Crop Evolution >Phylogenetic relationships between Ensete and Musa species as revealed by the trnT trnF region of cpDNA
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Phylogenetic relationships between Ensete and Musa species as revealed by the trnT trnF region of cpDNA

机译：cpDNA的trnT trnF区揭示了Ensete和Musa物种之间的亲缘关系

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摘要

Complete sequences of transcribed spacers and introns from the trnT trnF region of chloroplast DNA (cp DNA) were generated from Musaceae species to establish the phylogenetic relationships among 3 species of Ensete including the economically important Ensete ventricosum (Welw.) Cheesman and 13 species of Musa. Parsimony analysis and pair wise distance data produced a single tree, with Ensete and Musa as clearly distinguished clades. Six Musa and three Ensete clades were generated. The topology of these clades did not change when the data were split into spacers and introns, although the split resulted in poor bootstrap support. Removing a hotspot from the entire data set improved clade support. The clades produced are discussed with reference to existing taxonomic and phylogenetic treatments. In contrast to previous suggestions, most of the Rhodochlamys species that we investigated clustered together with strong support establishing their distinctiveness from the Musa species studied. Ensete glaucum (Roxb.) Cheesman and Musa beccartii Simmonds appear to represent ancestral forms of Ensete and Musa, respectively for the presently studied species, and both genera have a common ancestor that is yet to be established. Our data also show that E. ventricosum cannot be reduced to E. glaucum, nor can E. gilleti (De Wild.) Cheesman be reduced to E. ventricosum, as some authorities have suggested. Ensete gilleti or a species very close to it appears to be the ancestral species of E. ventricosum.
机译：从Musaceae物种产生了叶绿体DNA（cp DNA）的trnT trnF区转录的间隔区和内含子的完整序列，以建立包括经济上重要的Ensete ventricosum（Welw。）Cheesman的3种Ensete和13种Musa的系统发育关系。 。简约分析和逐对距离数据生成了一棵树，其中Ensete和Musa是清晰可辨的进化枝。生成了六个Musa和三个Ensete进化枝。当分裂成间隔子和内含子时，这些进化枝的拓扑结构没有改变，尽管分裂导致引导程序支持不佳。从整个数据集中删除热点改善了分支支持。参照现有的分类学和系统发育方法讨论了产生的进化枝。与先前的建议相反，我们调查的大多数杜鹃藻物种都聚集在一起，并得到了强有力的支持，从而确立了它们与所研究的穆萨物种的区别。 Eneste glaucum（Roxb。）Cheesman和Musa beccartii Simmonds似乎分别代表Ensete和Musa的祖先形式，并且这两个属都有共同的祖先尚未建立。我们的数据还显示，正如一些权威人士所建议的那样，不能将E. ventricosum还原为青霉E. gilleti（De Wild。）Cheesman，也不能还原为E. ventricosum。吉利特Ensete或非常接近它的物种似乎是E.ventricosum的祖先物种。

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