نتایج جستجو برای: Rheum Tanguticum
تعداد نتایج: 1976 فیلتر نتایج به سال:
Remote sensing has been extensively applied in agriculture for its objectiveness and promptness. However, few applications are available for monitoring natural medicinal plants. In the paper, a multilevel monitoring system, which includes satellite and aerial remote sensing, as well as ground investigation, was initially proposed to monitor natural Rheum tanguticum resource in Baihe Pasture, Zo...
Rheum tanguticum, a source plant for the traditional Chinese medicine Dahuang (rhubarb), is an endangered species. In this study, we first assessed genetic diversity using 102 internal transcribed spacer (ITS) sequences cloned from one population of R. tanguticum on the Qinghai-Tibet Plateau. In total, 1773 polymorphic sites were identified, including 707 sites in the ITS1 region, 773 sites in ...
Rhei Rhizoma (Dahuang in Chinese) is widely known as a purgative and antiinflammatory agent. In the Japanese Pharmacopoeia, Rhei Rhizoma is prescribed for four Rheum species, Rheum palmatum, R. tanguticum, R. officinale, and R. coreanum, while the first three species are prescribed for Dahuang in the Chinese Pharmacopoeia. Due to the morphologic similarity of the aerial parts and frequent occur...
BACKGROUND Wild Rheum tanguticum (Dahuang in Chinese) has becoming endangered in China. This study aims to examine the genetic structure and genetic diversity of R. tanguticum within species, and the genetic differentiation within and among populations in China. METHODS The variability and structure of 19 populations of R. tanguticum were investigated by their chloroplast DNA matK sequences. ...
To examine whether cultivation reduced genetic variation in the important Chinese medicinal plant Rheum tanguticum, the levels and distribution of genetic variation were investigated using ISSR markers. Fifty-eight R. tanguticum individuals from five cultivated populations were studied. Thirteen primers were used and a total of 320 DNA bands were scored. High levels of genetic diversity were de...
protective role of rheum tanguticum polysaccharides 1 on radiation-induced intestinal mucosal injury
the protective effects of rheum tanguticum polysaccharide 1 (rtp1), which is extracted from the chinese traditional medicine rheum tanguticum, on radiation-induced intestinal mucosal injury was investigated. rat intestinal crypt epithelial cells (iec-6 cells) and sprague-dawley rats were each divided into control, irradiated and rtp1-pretreated irradiated groups. after irradiation, cell surviva...
AIMS Rheum palmatum complex comprises all taxa within section Palmata in the genus Rheum, including R. officinale, R. palmatum, R. tanguticum, R. tanguticum var. liupanshanense and R. laciniatum. The identification of the taxa in section Palmata is based primarily on the degree of leaf blade dissection and the shape of the lobes; however, difficulties in species identification may arise from th...
AIMS Both Rheum palmatum and R. tanguticum are important but endangered medicinal plants endemic to China. In this study, we aimed to (i) investigate the level and pattern of genetic variability within/among populations of those species; (ii) evaluate genetic differentiation between both species and its relationships and ascertain whether both species are consistent with their current taxonomic...
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