Phylogenetic relationships in family Magnoliaceae inferred from ndhF sequences
Phylogenetic relationships in family Magnoliaceae inferred from ndhF sequences
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DOI：
10.2307/2657073
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发表时间：
2001-04-01
影响因子：
3
通讯作者：
Suh, Y
中科院分区：
文献类型：
--
作者：
Kim, S;Park, CW;Suh, Y
本文对木兰科99个分类群的ndhF序列进行了分析，以解决木兰科的系统发育问题。大玉兰（Magnolia macrophylla）和白玉兰（M. dealbata）是厚朴亚科（Magnolia section Rytidospermum）的北美种，虽然支持价值较低，但在厚朴亚科中处于最基础的位置。在剩下的分类群中。(1)木兰属是木兰科中最大的属，不是单系的；(2)含笑属（包括木兰亚属Maingola组）与榆花属（Elmerrillia）和木兰亚属Alcimandra、Aromadendron组亲缘关系较近；(3)含笑属的近缘植物分为玉兰亚属和玉兰亚属的部分绞股蓝；(4)厚朴属厚朴属（Pachylarnax）分支由厚朴属（Manglietiastrum）和木兰属（Gynopodium）两个分支组成；(5)厚朴属（Manglietia）分支发育良好；(6)白玉兰亚属的加勒比海种（Splendentes sensu Vazquez-Garcia）与新大陆的Talauma亚属有密切的亲缘关系；(7)白玉兰亚属的Rytidospermum与Talauma亚属有多系关系。分子树中分离的分支与家族中传统的分类倾向有很大不同。分子数据强烈表明，下家族的划分和组成的分类调整应予以考虑。
the ndhF sequences of 99 taxa, representing all sections in extant Magnoliaceae, were analyzed to address phylogenetic questions in the family. Magnolia macrophylla and M. dealbata, North American species of Magnolia section Rytidospermum, are placed at the base in the subfamily Magnolioideae although its supporting value is low. In the remaining taxa. several distinctive lineages are recognized: (1) Magnolia, the biggest genus in the family, is not monophyletic; (2) Michelia, including section Maingola of Magnolia subgenus Magnolia, is closely related with Elmerrillia and sections Alcimandra and Aromadendron of Magnolia subgenus Magnolia; (3) the associates of Michelia are grouped with Magnolia subgenus Yulania and section Gynopodium of Magnolia subgenus Magnolia; (4) Pachylarnax forms a clade with sections Manglietiastrum and Gynopodium of Magnolia: (5) a well-supported Manglietia clade is recognized; (6) Caribbean species of section Theorhodon of Magnolia subgenus Magnolia, which are section Splendentes sensu Vazquez-Garcia, are closely allied with New World members of Magnolia subgenus Talauma: and (7) section Rytidospermum of Magnolia subgenus Magnolia and subgenus Talauma are polyphyletic. The separated clades in the molecular tree are considerably different from traditional taxonomic dispositions in the family. The molecular data strongly suggest that a taxonomic realignment of infrafamilial delimitations and compositions should be considered.