Evaluation of raw nepodin extraction from Rumex japonicus and R. obtusifolius and their DNA polymorphisms.
Evaluation of raw nepodin extraction from Rumex japonicus and R. obtusifolius and their DNA polymorphisms.
复制标题
酸模和钝叶酸模中粗新孢素的提取及其 DNA 多态性的评价。
DOI:
10.1007/s11418-017-1143-0
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Woo JT.
中科院分区:
文献类型:
--
作者:
Minami M;Mori T;Yonezawa T;Saito Y;Teruya T;Woo JT.
Nepodin, found in the roots ofRumex japonicusHoutt. (Polygonaceae), inhibits osteoclast differentiation and has an antidiabetic effect. We propose nepodin as an ingredient of new functional foods or as a drug candidate for reducing the risk of reduced locomotion resulting from diseases such as osteoporosis. Although there are no previous reports ofR. obtusifoliusL., which is found throughout Japan, having roots containing nepodin, we found nepodin in the roots of this species. Therefore,R. obtusifoliusas well asR. japonicuswas considered a candidate raw material for nepodin extraction. We also discuss the suitability ofR. japonicusandR. obtusifoliusas sources of raw nepodin for cultivation on the Ryukyu Islands. In this study, all specimens on the Ryukyu Islands were identified asR. japonicus. Conversely, all specimens on mainland Japan wereR. obtusifolius. The DNA sequence of the chloroplasttrnL–trnF intergenic spacer region and partial nuclear internal transcribed spacer was consistent with the identification ofR. japonicusandR. obtusifoliusby morphological characteristics of the perianth segments. Therefore, to avoid erroneous identification and misuse of the plant species used for extraction of raw materials, it is preferable to develop DNA markers for these two regions. The content of nepodin varied from undetectable to 0.34% of the fresh weight (%FW) inR. japonicusand from undetectable to 0.21%FW inR. obtusifolius. From a pharmacological perspective, as plants that might be suitable as raw materials for nepodin extraction, it became clear that bothR. japonicusandR. obtusifoliuscan be used with the same expected extraction efficiency. Based on our findings,R. obtusifoliuscould not be confirmed as inhabiting the Ryukyu Islands. For this reason, to conserve the endemic genetic characteristics of the Ryukyu Islands and to prevent genetic pollution byR. obtusifolius,onlyR. japonicusshould be cultivated on the Ryukyu Islands.