title: Phylogenetic analysis of the DNA sequence of the non-coding region of nuclear ribosomal DNA and chloroplast of Ephedra plants in China.
abstract: Twenty-four Ephedra plants belonging to 8 species grown in the northern and western parts of China were phylogenetically analyzed for their non-coding DNA sequences, internal transcribed spacers (ITSs) of nuclear ribosomal DNA as well as trnL intron and intergenic spacers between trnL and trnF (trnL/ trnF) of the chloroplast. Based on the ITS sequences, the 8 species could be divided into 3 groups: Group 1 (Ephedra intermedia, E. sinica, E. przewalskii), Group 2 (E. equisetina, E. monosperma, E. gerardiana), and Group 3 (E. likiangensis, E. minuta). The species classified into Group 1 grow mainly in the north, Group 3 in the south and Group 2 in the center, suggesting their genetic and geographic relationships. A specific primer set was designed to classify the 3 groups by routine PCR. Combined analysis of ITS and trnL/ trnF differentiated the 8 Ephedra species.
authors.affiliation: Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan.
authors.forename: Changfeng
authors.initials: C
authors.lastname: Long
authors.forename: Nobuko
authors.initials: N
authors.lastname: Kakiuchi
authors.forename: Akira
authors.initials: A
authors.lastname: Takahashi
authors.forename: Katsuko
authors.initials: K
authors.lastname: Komatsu
authors.forename: Shaoqing
authors.initials: S
authors.lastname: Cai
authors.forename: Masayuki
authors.initials: M
authors.lastname: Mikage
mesh_terms: D002467:Cell Nucleus / Q000235:genetics*; D017931:DNA Primers; D018744:DNA, Plant / Q000737:chemistry; D021903:DNA, Ribosomal Spacer / Q000737:chemistry*; D029789:Ephedra / Q000235:genetics*; D006801:Humans; D008516:Medicine, Chinese Traditional; D010802:Phylogeny; D008517:Phytotherapy; D018547:Plant Stems; D016133:Polymerase Chain Reaction
chemical_list: D017931:DNA Primers; D018744:DNA, Plant; D021903:DNA, Ribosomal Spacer