[Potential distribution of the traditional Tibetan herb Pterocephalus hookeri by Maxent model].

In order to study the ecology suitability of Pterocephalus hookeri, and provide a reference for GAP planting location and regional development, the Maxent model and GIS technology were used to investigate ecology suitability regions for P. hookeri based on the distribution points collected from Chinese virtual herbarium, the references and field trips. The potential distribution areas mainly concentrated in the eastern Tibet, western Sichuan, southern Qinghai, northwest Yunnan, and southern Gansu.

[Correlation between flavonoids contents in Hippophae rhamnoides subsp. inensis leaf and ecological factors, and ecological suitability analysis of H. rhamnoides subsp. sinensis].

The study aims at providing a new suitable way to promote artificial cultivation, solving the problem of resources increasingly endangered wild medicine, and protecting the wild resources of Tibetan medicine. The content of quercetin,kaempferol and isorhamnetin was determined by HPLC. The correlation between flavonoids components and ecological factors was analyzed using partial least-squares regression (PLSR).

The Chemical and Genetic Characteristics of Szechuan Pepper (Zanthoxylum bungeanum and Z. armatum) Cultivars and Their Suitable Habitat.

Szechuan peppers, famous for their unique sensation and flavor, are widely used as a food additive and traditional herbal medicine. Zanthoxylum bungeanum and Z. armatum are both commonly recognized as Szechuan peppers, but they have different tastes and effects.

[Research progress on resources and quality evaluation of Tibetan medicine in Qinghai-Tibet Plateau].

With the development of Tibetan medicine industry, the demands for Tibetan medicine were rising sharply. In addition, with the eco-environment vulnerability of Qinghai-Tibet Plateau region and the phenomenon of synonymies and homonymies in Tibetan medicine, there were a lack of resources and varieties in the clinical application of Tibetan medicine. At present, the shortage of Tibetan medicine and the inadequacy of its quality standard have become the two major problems that seriously restricted the sustainable development of Tibetan medicine industry.

[Spatial Distribution and Global Potential Suitability Regions of Artemisia annua].

Objective: To study the spatial distribution and potential climatic suitability regions of Artemisia annua around the world.

Methods: The spatial distribution and climatic characteristics were researched by factor analysis based on Global Biodiversity Information Facility Database and World Climate Database. The global potential suitability regions of Artemisia annua were analyzed by ArcGIS.

Chemical Constituents, Quality Control, and Bioactivity of Epimedii Folium (Yinyanghuo).

Epimedii Folium (Yinyanghuo in Chinese) is one of the most commonly used traditional Chinese medicines. Its main active components are flavonoids, which exhibit multiple biological activities, such as promotion of bone formation and sexual function, protection of the nervous system, and prevention of cardiovascular diseases. Flavonoids also show anti-inflammatory and anticancer effects.

[RNA-Seq and genuine traditional Chinese medicine].

RNA-Sequencing (RNA-Seq) is a newly-developed method in transcriptome research, it can afford more accurate transcription information and be more quickly by using Next-generation Sequencing (NGS) technology. RNA-Seq has been widely used in various biological fields. Genuine traditional Chinese medicines (TCM), with good quality and therapeutic effect, were always praised highly and used by famous physicians.

[Study on traceability system of genuine medicinal materials].

Genuine medicinal materials with special characteristics of Traditional Chinese Medicine (TCM), is recognized as high quality medicine. Both ancient records and modern research considered that the origin is an important reason for the formation of genuine medicinal materials. However, blindly transplanting of genuine medicinal materials has led to the quality decline and counterfeit medicines appeared in production or sale progress, which may increase the risk of accidents in TCM.

Determination of production regions for pollution-free Chinese medicinal materials by geographic information system: Achyranthes bidentata (Niu Qi) in Tianjin as an example.

Background: The land and ecology suitability for producing pollution-free Chinese medicinal materials should be evaluated based on Geographic Information System (GIS). This study aims to determine production regions for pollution-free Achyranthes bidentata in Tianjin as a case to illustrate the workflow based on GIS.

Methods: The slopes, land usage, residential areas and roads were selected to evaluate the land suitability, to avoid the potential pollution sources.

Natural Resource Monitoring of Rheum tanguticum by Multilevel Remote Sensing.

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, Zoige County, Sichuan Province.

[Research on spectral reflectance characteristics for Glycyrrhizae Radix].

In order to study the spectral reflectance differences of Glycyrrhizae Radix under different growth conditions and lay the foundation for quantitative monitoring of Glycyrrhizae Radix remote sensing images, spectra of Glycyrrhiza species under different growth period and different varieties and different regions were measured by a portable spectrometer. The results showed that the reflectivity of annual G. uralensis was obviously higher than that of the two years plant in the visible light band own to the contents of crown layer chlorophyll.

[Quality variation and ecotype division of Panax quinquefolium in China].

Quality variation and ecotype classification of Chinese herbal medicine are important scientific problems in Daodi herbal medicine research. The diversity of natural environmental conditions has led to form unique multi-Daodi, multi-product areas that produce particular Chinese herbal medicine. China is one of three big American ginseng (Panax quinquefolium L.

Transcriptome analysis of Bupleurum chinense focusing on genes involved in the biosynthesis of saikosaponins.

Background: Bupleurum chinense DC. is a widely used traditional Chinese medicinal plant. Saikosaponins are the major bioactive constituents of B.

[Quantitative study on ecological suitability of Chinese herbal medicine based on GIS].

The quality of Chinese herbal medicine is closely related to its producing region. In order to apply mathematical models to do a quantitative study on the suitability of Chinese herbal medicine, it is necessary to study on the ecological factors and the interpolation of climatic data, which influence the Chinese herbal medicine growth. The paper firstly studied the judgment standard of ecological index from the points of ecology and statistics, and how to calculate the optimum range values and the weight of each ecological factor.

[UPLC fingerprint for quality assessment of ginsenosides of ginseng radix et rhizoma].

This paper is aimed to establish the method of fingerprint analysis of chemical constituents by reversed-phase ultra-performance liquid chromatography (UPLC) for the quality control of the roots and rhizomes of Panax ginseng (Ginseng Radix et Rhizoma). The method was performed on a ACQUITY UPLC BEH C18 (50 mm x 2.1 mm ID, 1.

Species identification of medicinal pteridophytes by a DNA barcode marker, the chloroplast psbA-trnH intergenic region.

Medicinal pteridophytes are an important group used in traditional Chinese medicine; however, there is no simple and universal way to differentiate various species of this group by morphological traits. A novel technology termed "DNA barcoding" could discriminate species by a standard DNA sequence with universal primers and sufficient variation. To determine whether DNA barcoding would be effective for differentiating pteridophyte species, we first analyzed five DNA sequence markers (psbA-trnH intergenic region, rbcL, rpoB, rpoC1, and matK) using six chloroplast genomic sequences from GeneBank and found psbA-trnH intergenic region the best candidate for availability of universal primers.

TCMGIS-II based prediction of medicinal plant distribution for conservation planning: a case study of Rheum tanguticum.

Background: Many medicinal plants are increasingly endangered due to overexploitation and habitat destruction. To provide reliable references for conservation planning and regional management, this study focuses on large-scale distribution prediction of Rheum tanguticum Maxim. ex Balf (Dahuang).

Mapping the potential distribution of high artemisinin-yielding Artemisia annua L. (Qinghao) in China with a geographic information system.

Background: Artemisia annua L. is an important source for artemisinin, a potent drug for treating malaria. This study aims to map and predict the potential geographic distribution of A.

Using DNA barcoding to identify species within Euphorbiaceae.

In this study, we tested the applicability of four DNA regions (rbcL, matK, ITS, and ITS2) as barcodes for identifying species within Euphorbiaceae. Based on assessments of the specific genetic divergence, the DNA barcoding gap, and the ability for species discrimination, the present results affirmed that ITS/ITS2 is a potential barcode for the Euphorbiaceae species. This study also provided a large-scale test to evaluate the effectiveness of ITS/ITS2 for differentiating species within Euphorbiaceae.

[Study on suitability regionalization producing area of vulnerable species Acanthopanax senticosus based on TCMGIS].

Objective: To determine the suitable regions of Acanthopanax senticosus and provide the basis for its resource census, reservation, wild nature and cultivation.

Methods: The traditional Chinese medicine geographic information system (TCMGIS) was used to select the suitable producing areas.

Results: The ecological environments of 269 counties in 11 province or directly governed city region were suitable for Acanthopanax senticosus.

[Studies on habitats suitability of endangered medicinal plant Notopterygium incisum].

Objective: To assess the suitability of origin habitats of Notopterygium incisum, and provide theoretical basis of screening suitable areas for its large-scale cultivation.

Method: Detailed field survey of N. incisum, spatial databases, and GIS technology were used for the habitats suitability assessment.

Authentication of the family Polygonaceae in Chinese pharmacopoeia by DNA barcoding technique.

Ethnopharmacological Relevance: Medicinal plants belonging to the family Polygonaceae in Chinese pharmacopoeia possess important medicinal efficacy in traditional Chinese medicines.

Aim Of The Study: DNA barcodes are first used to discriminate the Polygonaceae in Chinese pharmacopoeia and their adulterants.

Materials And Methods: DNA samples, extracted from thirty-eight specimens belonging to eighteen species in Polygonaceae, were used as templates.

[Ecological evaluation of suitable area for production of Phellodendron amurense based on TCMGIS- I].

The TCMGIS- I (Suitability evaluation geographic information system of traditional Chinese medicine producing area ) was developed and used to analyze the appropriate producing area of Phellodendron amurense in China. Taoshan county of Heilongjiang province, one of the main producing areas of the geo-authentic crude drug, was selected as the analytical basal place. The results show that besides traditional producing area in Taoshan county of Heilongjiang province, 131 counties of the provinces of Heilongjiang, Jilin, Liaoning and Innermongolia are also alternative areas according to the eco-soil condition that the medicinal plants needed, and the sum area are 567 989.