Abstract
Rhizomes of Sinopodophyllum hexandrum and Dysosma species, which have long been used in the traditional Chinese herbal medicine, have similar morphology and chemical composition. However, the podophyllotoxin content is higher in the rhizomes of S. hexandrum than in those of Dysosma species. The PCR-amplified fragments of trnT -trnL showed length variation between S. hexandrum and Dysosma species, and sequence comparison indicated that the length variation resulted from differential indels. There were species-specific PCR-RFLP markers of the chloroplast trnD -trnT region. Our results suggest that both chloroplast intergenic regions can be used for the identification of S. hexandrum and Dysosma Rhizoma medicines on the market.
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