Molecular phylogeny and systematics of the banana family (Musaceae) inferred from multiple nuclear and chloroplast DNA fragments, with a special reference to the genus Musa.
Molecular phylogeny and systematics of the banana family (Musaceae) inferred from multiple nuclear and chloroplast DNA fragments, with a special reference to the genus Musa.
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从多个核和叶绿体 DNA 片段推断香蕉科（芭蕉科）的分子系统发育和系统学，特别是芭蕉属。
DOI：
10.1016/j.ympev.2010.06.021
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发表时间：
2010
影响因子：
4.1
通讯作者：
X. Ge
中科院分区：
文献类型：
--
作者：
Lin;M. Häkkinen;Yong;G. Hao;X. Ge
芭蕉科是古热带的一个小科。在这个科中有三个属被确认，虽然属的划分仍然有争议。该科的大多数物种（约65种）被归入芭蕉属，其属下分类长期以来一直存在争议。本研究获得了36个种（代表3个属的42个内群成员）的核核糖体ITS和叶绿体（atpB-rbcL、rps 16和trnL-F）DNA序列，以及从GenBank数据库检索到的10个内群成员和4个外群成员，构建了该科的系统发育关系，并特别参考了芭蕉属的属下分类。我们的系统发育分析阐述了以前的结果，支持单系的家庭，并建议Musella和Ensete可能是同源或至少密切相关，但驳斥了以前的属下分类芭蕉。在分子系统发育中，以前根据形态学定义的五个芭蕉组中没有一个被恢复为单系群。两个亚属的分支，分别对应于基本染色体数x=11和10/9/7：前者的分支包括种从部分芭蕉和Rhodochlamys，而后者包含部分Callimusa，Australimusa，和Ingentimusa。
Musaceae is a small paleotropical family. Three genera have been recognised within this family although the generic delimitations remain controversial. Most species of the family (around 65 species) have been placed under the genus Musa and its infrageneric classification has long been disputed. In this study, we obtained nuclear ribosomal ITS and chloroplast (atpB-rbcL, rps16, and trnL-F) DNA sequences of 36 species (42 accessions of ingroups representing three genera) together with 10 accessions of ingroups retrieved from GenBank database and 4 accessions of outgroups, to construct the phylogeny of the family, with a special reference to the infrageneric classification of the genus Musa. Our phylogenetic analyses elaborated previous results in supporting the monophyly of the family and suggested that Musella and Ensete may be congeneric or at least closely related, but refuted the previous infrageneric classification of Musa. None of the five sections of Musa previously defined based on morphology was recovered as monophyletic group in the molecular phylogeny. Two infrageneric clades were identified, which corresponded well to the basic chromosome numbers of x=11 and 10/9/7, respectively: the former clade comprises species from the sections Musa and Rhodochlamys while the latter contains sections of Callimusa, Australimusa, and Ingentimusa.