Taxonomic and phytogeographic implications from ITS phylogeny in Berberis (Berberidaceae)

被引:64
作者
Kim, YD [1 ]
Kim, SH
Landrum, LR
机构
[1] Hallym Univ, Div Biol Sci, Chunchon 200702, South Korea
[2] Arizona State Univ, Sch Life Sci, Tempe, AZ USA
关键词
Berberis; ITS; Mahonia; phylogeny; phytogeography; vicariance;
D O I
10.1007/s10265-004-0145-7
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
A phylogeny based on the internal transcribed spacer (ITS) sequences from 79 taxa representing much of the diversity of Berberis L. (four major groups and 22 sections) was constructed for the first time. The phylogeny was basically congruent with the previous classification schemes at higher taxonomic levels, such as groups and subgroups. A notable exception is the non-monophyly of the group Occidentales of compound-leaved Berberis (previously separated as Mahonia). At lower levels, however, most of previous sections and subsections were not evident especially in simple-leaved Berberis. Possible relationship between section Horridae (group Occidentales) and the simple-leaved Berberis clade implies paraphyly of the compound-leaved Berberis. A well-known South America-Old World (mainly Asia) disjunctive distribution pattern of the simple-leaved Berberis is explained by a vicariance event occurring in the Cretaceous period. ne ITS phylogeny also suggests that a possible connection between the Asian and South American groups through the North American species (Berberis canadensis or B. fendleri) is highly unlikely.
引用
收藏
页码:175 / 182
页数:8
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