Variation of Glycyrrhizin and Liquiritin Contents within a Population of 5-Year-Old Licorice (Glycyrrhiza uralensis) Plants Cultivated under the Same Conditions

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概要

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• Cultivated licorice plants (Glycyrrhiza uralensis FISCH.) contain smaller amounts of the triterpene saponin glycyrrhizin than wild licorice plants. To resolve this problem and to breed strains with high-glycyrrhizin content we determined the glycyrrhizin content of 100 samples of G. uralensis that were propagated from seed and grown under the same conditions in the field for 5 years. There was a 10.2-fold variation in glycyrrhizin content among these plants, ranging from 0.46 to 4.67% (average 2.11±0.90%). There was also a wide variation in liquiritin content, ranging from 0.11 to 2.65% (average 1.00±0.49%). The glycyrrhizin content was positively correlated with that of liquiritin in the taproots (r2=0.5525). Our results indicate that there are various genetic strains for glycyrrhizin and liquiritin synthesis within a population of plants propagated from seed. The selected high-glycyrrhizin and liquiritin strains will be useful for licorice production and studies on biosynthetic analysis of glycyrrhizin and liquiritin.

• 公益社団法人　日本薬学会の論文

著者

• Hayashi Shigeki

  Hokkaido Division, Research Center for Medicinal Plant Resources, National Institute of Biomedical I

• Yamamoto Yutaka

  Tochimoto Tenkaido Co. Ltd.

• Shibata Toshiro

  Hokkaido Division Research Center For Medicinal Plant Resources National Institute Of Biomedical Inn

• Kojoma Mareshige

  Faculty Of Pharmaceutical Sciences Health Sciences University Of Hokkaido

• Sekizaki Haruo

  Faculty Of Pharmaceutical Sciences Health Science University Of Hokkaido

• Hayashi Shigeki

  Hokkaido Division, Research Center for Medicinal Plant Resources, National Institute of Biomedical Innovation

• Sekizaki Haruo

  Faculty of Pharmaceutical Science, Higashi Nippon Gakuen University

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