| Publication Type: | Journal Article |
| Year of Publication: | 2006 |
| Authors: | Z. - Y. Yang, Chao, Z., Huo, K. - K., Wu, B. - Y., Pan, S. -li |
| Journal: | Nan Fang Yi Ke Da Xue Xue Bao |
| Volume: | 26 |
| Pagination: | 1593–5 |
| Date Published: | Nov |
| Keywords: | DNA: Plant, DNA: Ribosomal Spacer, Leonurus, Molecular Sequence Data, Phylogeny, Sequence Analysis: DNA, Species Specificity |
| Abstract: | OBJECTIVE: To analyze the nuclear ribosome DNA (nrDNA) internal transcribed spacer (ITS) sequences of 4 Leonurus species, and the possibility of using them for molecular authentication of the crude drugs from the genus. METHODS: The nrDNA ITS sequence (including ITS1, 5.8S rDNA, ITS2, and partial 18S rDNA and 26S rDNA) of L. japonicus and its 3 adulterant species were amplified and sequenced, and CLUSTRAL X and MEGA software was employed for analysis. RESULTS: The variation of ITS1 and ITS2 between L. japonicus and its adulterant species ranged between 7.2% and 18.8% and between 14.2% and 27%, respectively. The phylogenic tree derived from the dendrograms based on the ITS sequence data contained some discrepancy from the traditional classification. CONCLUSION: The nrDNA ITS sequences can be used potentially as efficient markers for identification of L. japonicus and its adulterants, and further study is needed for studying the phylogeny of Leonurus. |