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Phylogenetic relationship in the genus Panax: inferred from chloroplast trnK gene and nuclear 18S rRNA gene sequences
Zhu, S; Fushimi, H; Cai, SQ; Komatsu, K
关键词Panax Araliaceae Phylogenetic Relationship Trnk Gene 18s Rrna Gene
刊名PLANTA MEDICA
2003-07-01
69期:7页:647-653
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Plant Sciences ; Chemistry, Medicinal ; Pharmacology & Pharmacy
研究领域[WOS]Plant Sciences ; Pharmacology & Pharmacy
关键词[WOS]GINSENG GENUS ; ARALIACEAE ; DNA
英文摘要

Chloroplast trnK gene and nuclear 18S rRNA gene sequences of 13 Panax taxa, collected mainly from Sino-Japanese floristic region, were investigated in order to construct phylogenetic relationship and to assist taxonomic delimitation within this genus. The length of trnK gene sequence varied from 2537 bp to 2573 bp according to the taxa, whereas matK gene sequences, embedded in the intron of trnK gene, were of 1512 bp in all taxa. Species-specific trnK/matK sequence provided much insight into phylogeny and taxonomy of this genus. 18S rRNA gene sequences were of 1808 or 1809 bps in length, only 9 types of 18S rRNA sequences were observed among 13 taxa. Parsimony and neighbor-joining analyses of the combined data sets of trnK-18S rRNA gene sequences yielded a well-resolved phylogeny within genus Panax, where three main clades were indicated. A pseudoginseng and A stipuleanatus formed a sister group located at a basal position in the phylogenetic tree, which suggested the relatively primitive position of these two species. Monophyly of A ginseng, P. japonicus (Japan) and A quinquefolius, which are distributed in northern parts of Asia or America, was well supported (Northern Clade). The remaining taxa distributed in southern parts of Asia formed a relatively large clade (Southern Clade). The taxonomic debated taxa traditionally treated as subspecies or varieties of A japonicus or A pseudoginseng showed various nucleotide sequences, but all fell into one cluster. It might suggest these taxa are differentiated from a common ancestor and are in a period of high variation, which is revealed not only on morphological appearance, but also on molecular divergence. By comparing trnK and 18S rRNA gene sequences among 13 Panax taxa, a set of valuable molecular evidences for identification of Ginseng drugs was obtained.

语种英语
WOS记录号WOS:000184890000011
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被引频次:38[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/55898
专题北京大学药学院_天然药物学系
作者单位1.Toyama Med & Pharmaceut Univ, Inst Nat Med, Toyama 9300194, Japan
2.Peking Univ, Sch Pharmaceut Sci, Dept Nat Med, Beijing 100871, Peoples R China
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Zhu, S,Fushimi, H,Cai, SQ,et al. Phylogenetic relationship in the genus Panax: inferred from chloroplast trnK gene and nuclear 18S rRNA gene sequences[J]. PLANTA MEDICA,2003,69(7):647-653.
APA Zhu, S,Fushimi, H,Cai, SQ,&Komatsu, K.(2003).Phylogenetic relationship in the genus Panax: inferred from chloroplast trnK gene and nuclear 18S rRNA gene sequences.PLANTA MEDICA,69(7),647-653.
MLA Zhu, S,et al."Phylogenetic relationship in the genus Panax: inferred from chloroplast trnK gene and nuclear 18S rRNA gene sequences".PLANTA MEDICA 69.7(2003):647-653.
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