摘要：Two known saponins, licorice-saponin H2 and macedonoside A, were isolated from the stolons of Glycyrrhiza lepidota (American licorice) as major saponins. Since licorice-saponin H2 and macedonoside A are minor saponins isolated from the three glycyrrhizin-producing species ( i.e. G. glabra , G. uralensis , G. inflata ) and the three macedonoside C-producing species ( i.e. G. macedonica , G. echinata , G. pallidiflora ), respectively, the present study suggests that G. lepidota is an intermediate of both glycyrrhizin-producing and macedonoside C-producing species. The phylogenetic tree constructed from the nucleotide sequences of ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit gene ( rbcL ) of these seven Glycyrrhiza plants indicated that G. lepidota was separated from the other six Glycyrrhiza species, and this phylogenetic relationship was in accordance with their saponin compositions.
关键词：Glycyrrhiza lepidota;rbcL;licorice-saponin H2;macedonoside A
