摘要
目的探讨细辛药材3个基源同等入药的遗传基础,汉城细辛和北细辛的分类位置及细辛药材分子鉴别的可能性。方法进行PCR扩增,扩增产物纯化,测序,然后结合国产其他细辛属植物的ITS序列进行分析。结果获得辽细辛、华细辛和汉城细辛的ITS和5.8SrDNA完整序列;细辛药材的3种原植物形成一个非常稳定的独立分支,其中北细辛和华细辛聚合成一个分支,汉城细辛形成另一个分支;3种细辛药材ITS序列有差异。结论细辛药材3个来源亲缘关系非常密切,它们相互替代入药是有遗传基础的,支持北细辛是库页细辛的变种,汉城细辛的分类位置未能确定,汉城细辛、北细辛和华细辛ITS序列之间的差异可用作分子鉴定的依据。
Objective: To explore the genetic basis of using three species of Asarum as Herba Asari to determine the taxonomic positions of Asarum heterotropoides and A. sieboldii;and to apply DNA molecular analysis as a tool for identification of Herba Asari. Method: PCR, purification, sequence analysis were prerformed. Result: ITS sequences of the three Asarum species were obtained. 3 botanical sources of Herba Asari are closely clustered together on the topology tree; one inner branch is composed of A. heterotropoides and A. sieboldii, whereas another branch contains A. sieboldii. Their ITS sequences are different. Conclusion: Three plant species of Herba Asari are closely related,and there are genetic reasons that they are used as the sources of the same medicine. The classification placement of A. sieboldii is not certain. The differences of ITS sequences of the botanical sources of Herba Asari can be used as a means of identification. [
出处
《中国中药杂志》
CAS
CSCD
北大核心
2005年第5期329-332,共4页
China Journal of Chinese Materia Medica
