Gentiana macrophylla Pall.(G.macrophylla),whose genus and family belong to the Gentianaceae and Gentiana.The main distribution centers of G.macrophylla resources were the Loess Plateau and the eastern Qinghai-Tibet Pl...Gentiana macrophylla Pall.(G.macrophylla),whose genus and family belong to the Gentianaceae and Gentiana.The main distribution centers of G.macrophylla resources were the Loess Plateau and the eastern Qinghai-Tibet Plateau in China.G.macrophylla,as a traditional medicine,has a long history and was used in different ethnic medicines.Its roots were used in traditional Chinese medicine,which had the effect of anti-inflammatory,anti-rheumatism,antiviral,promote blood circulation,eliminate swelling and pain,while its flowers were used in traditional Mongolian medicine,which had the effect of removing“Xieriwusu”(“Xieriwusu”means rheumatism),antiviral,reducing swelling.From previous studies,it could be found that there were more than forty components isolated and identified from G.macrophylla.The main chemical components were iridoids,flavonoids,triterpenoids,steroids,phenylpropanoids,and alkaloids.Iridoid terpenoid components represented by gentiopicroside and Loganic acid were the main components of the root of G.macrophylla,which had anti-inflammatory,antioxidant,hepatoprotective,analgesic,antibacterial and promote gastrointestinal tract activities.The flower mainly contains isoorientin and isovitexin as the representative of flavonoids.They have anti-tumor,liver protection,heart protection,inhibition of acetylcholinesterase and inhibition of melanin.It could be seen from previous studies that the research on G.macrophylla was mainly focused on the root,and the flower was rarely studied.It was reported that the experimental data of the anti-inflammatory and anti-tumor effects of G.macrophylla flowers show that its curative effect was very good.Therefore,the flowers of the flower of G.macrophylla can be used as potential medicinal parts for research.Given that flavonoids are mostly found in flowers and exhibit a range of functions,it is possible to investigate the flowers in order to learn more about G.macrophylla’s potential medical benefits.Based on botanical books,Chinese classic texts,medical monographs and academic search engines(Google,Google Scholar,Web of Science,SciFinder,Pubmed,CNKI,Sci-hub,Elsevier and Wanfang),the data and information on G.macrophylla in the past 20 years are inquired and summarized comprehensively.The basic source,traditional use,chemical composition,biological activity,pharmacodynamics and quality control of G.macrophylla was systematically reviewed,in order to provide reliable basis for the subsequent development and utilization of G.macrophylla.展开更多
Understanding the evolutionary and ecological processes involved in population differentiation and speciation provides critical insights into biodiversity formation. In this study, we employed 29,865 single nucleotide...Understanding the evolutionary and ecological processes involved in population differentiation and speciation provides critical insights into biodiversity formation. In this study, we employed 29,865 single nucleotide polymorphisms(SNPs) and complete plastomes to examine genomic divergence and hybridization in Gentiana aristata, which is endemic to the Qinghai-Tibet Plateau(QTP) region. Genetic clustering revealed that G. aristata is characterized by geographic genetic structures with five clusters(West, East, Central, South and North). The West cluster has a specific morphological character(i.e., blue corolla) and higher values of FSTcompared to the remaining clusters, likely the result of the geological barrier formed by the Yangtze River. The West cluster diverged from the other clusters in the Early Pliocene;these remaining clusters diverged from one another in the Early Quaternary. Phylogenetic reconstructions based on SNPs and plastid data revealed substantial cyto-nuclear conflicts. Genetic clustering and D-statistics demonstrated rampant hybridization between the Central and North clusters,along the Bayankala Mountains, which form the geological barrier between the Central and North clusters. Species distribution modeling demonstrated the range of G. aristata expanded since the Last Interglacial period. Our findings provide genetic and morphological evidence of cryptic diversity in G. aristata, and identified rampant hybridization between genetic clusters along a geological barrier.These findings suggest that geological barriers and climatic fluctuations have an important role in triggering diversification as well as hybridization, indicating that cryptic diversity and hybridization are essential factors in biodiversity formation within the QTP region.展开更多
[Objective] The aim was to investigate the genetic diversity and analyze the genetic differentiation of germplasm resources of Gentiana officinalis H.Smith from Qinghai.[Method] The cpDNA of chloroplast psbA-trnH gene...[Objective] The aim was to investigate the genetic diversity and analyze the genetic differentiation of germplasm resources of Gentiana officinalis H.Smith from Qinghai.[Method] The cpDNA of chloroplast psbA-trnH gene was sequenced to analyze the genetic diversity of six populations of G.officinalis.[Result] A total of 10 distinct haplotypes were detected in the studied populations,and seven variable sites were found by comparing their sequences.G.officinalis with high-level genetic diversity（h=0.771）.Genetic diversity was largely varied within populations,ranging from 0.563 to 0.857 for haplotype diversity,and from 0.002 43 to 0.005 83 for nucleotide diversity,respectively.Genetic differentiation among populations（Gst） of G.officinalis was 0.196 0;gene flow（Nm） was 2.05;80.40% of the genetic variability occurred within population.[Conclusion] The cultivated G.officinalis in Qinghai showed rich genetic diversity,which is beneficial for the production of high-quality herb medicine.展开更多
The root rot is a major disease affecting yield of Gentiana macrophyl a pal , reducing yield or even causing total crop failure. This research introduced the occurrence characteristics and various control techniques o...The root rot is a major disease affecting yield of Gentiana macrophyl a pal , reducing yield or even causing total crop failure. This research introduced the occurrence characteristics and various control techniques of root rot of Gentiana macrophyl a pal , in order to provide references for farmers.展开更多
[Objective] This study was to obseve the flower bud differentiation process of Gentiana triflora Pall., and to clarify the flower bud development law and the correlation between flower buds differentiation and externa...[Objective] This study was to obseve the flower bud differentiation process of Gentiana triflora Pall., and to clarify the flower bud development law and the correlation between flower buds differentiation and external morphology. [Method] The paraffin section method was used to observe the flower bud of Gentiana triflora un- der microscope. [Result] The flower bud differentiation process of Gentiana triflora could be divided into six stages： the undifferentiated stage, initial differentiation stage, sepal primordia differentiation stage, petal primordia differentiation stage, stamen pri- mordia differentiation stage and the pistil primordia differentiation stage. The flower bud differentiation started from early May, when the plant had 10-11 stem nodes, and completed in early June, lasted about 40 d. The effect of plant height on flower bud differentiation was not significant. [Conclusion] The study provided theoretical basis for the high-yield cultivation, variety selection and flowering regulation of Gentiana triflora.展开更多
基金supported by the project for Inner Mongolia Autonomous Region Mongolian medicine standardization(2023-[MB026])the Scientific and Technological Innovative Research Team for Inner Mongolia Medical University of Bioanalysis of Mongolian medicine’s(No.YKD2022TD037)+1 种基金the University Youth Science and Technology Talent Program(No.NJYT23135)the Inner Mongolia Medical University“First-class Discipline”construction project(No.2024MYYLXK006).
文摘Gentiana macrophylla Pall.(G.macrophylla),whose genus and family belong to the Gentianaceae and Gentiana.The main distribution centers of G.macrophylla resources were the Loess Plateau and the eastern Qinghai-Tibet Plateau in China.G.macrophylla,as a traditional medicine,has a long history and was used in different ethnic medicines.Its roots were used in traditional Chinese medicine,which had the effect of anti-inflammatory,anti-rheumatism,antiviral,promote blood circulation,eliminate swelling and pain,while its flowers were used in traditional Mongolian medicine,which had the effect of removing“Xieriwusu”(“Xieriwusu”means rheumatism),antiviral,reducing swelling.From previous studies,it could be found that there were more than forty components isolated and identified from G.macrophylla.The main chemical components were iridoids,flavonoids,triterpenoids,steroids,phenylpropanoids,and alkaloids.Iridoid terpenoid components represented by gentiopicroside and Loganic acid were the main components of the root of G.macrophylla,which had anti-inflammatory,antioxidant,hepatoprotective,analgesic,antibacterial and promote gastrointestinal tract activities.The flower mainly contains isoorientin and isovitexin as the representative of flavonoids.They have anti-tumor,liver protection,heart protection,inhibition of acetylcholinesterase and inhibition of melanin.It could be seen from previous studies that the research on G.macrophylla was mainly focused on the root,and the flower was rarely studied.It was reported that the experimental data of the anti-inflammatory and anti-tumor effects of G.macrophylla flowers show that its curative effect was very good.Therefore,the flowers of the flower of G.macrophylla can be used as potential medicinal parts for research.Given that flavonoids are mostly found in flowers and exhibit a range of functions,it is possible to investigate the flowers in order to learn more about G.macrophylla’s potential medical benefits.Based on botanical books,Chinese classic texts,medical monographs and academic search engines(Google,Google Scholar,Web of Science,SciFinder,Pubmed,CNKI,Sci-hub,Elsevier and Wanfang),the data and information on G.macrophylla in the past 20 years are inquired and summarized comprehensively.The basic source,traditional use,chemical composition,biological activity,pharmacodynamics and quality control of G.macrophylla was systematically reviewed,in order to provide reliable basis for the subsequent development and utilization of G.macrophylla.
基金financial support provided by the Foundation of Henan Educational Committee (22A180024)Natural Science Foundation of Henan Province (232300420212)。
文摘Understanding the evolutionary and ecological processes involved in population differentiation and speciation provides critical insights into biodiversity formation. In this study, we employed 29,865 single nucleotide polymorphisms(SNPs) and complete plastomes to examine genomic divergence and hybridization in Gentiana aristata, which is endemic to the Qinghai-Tibet Plateau(QTP) region. Genetic clustering revealed that G. aristata is characterized by geographic genetic structures with five clusters(West, East, Central, South and North). The West cluster has a specific morphological character(i.e., blue corolla) and higher values of FSTcompared to the remaining clusters, likely the result of the geological barrier formed by the Yangtze River. The West cluster diverged from the other clusters in the Early Pliocene;these remaining clusters diverged from one another in the Early Quaternary. Phylogenetic reconstructions based on SNPs and plastid data revealed substantial cyto-nuclear conflicts. Genetic clustering and D-statistics demonstrated rampant hybridization between the Central and North clusters,along the Bayankala Mountains, which form the geological barrier between the Central and North clusters. Species distribution modeling demonstrated the range of G. aristata expanded since the Last Interglacial period. Our findings provide genetic and morphological evidence of cryptic diversity in G. aristata, and identified rampant hybridization between genetic clusters along a geological barrier.These findings suggest that geological barriers and climatic fluctuations have an important role in triggering diversification as well as hybridization, indicating that cryptic diversity and hybridization are essential factors in biodiversity formation within the QTP region.
基金Supported by Science Foundation for the Excellent Youth and Middle-aged Scholars in Qinghai University(2009-QY-19)~~
文摘[Objective] The aim was to investigate the genetic diversity and analyze the genetic differentiation of germplasm resources of Gentiana officinalis H.Smith from Qinghai.[Method] The cpDNA of chloroplast psbA-trnH gene was sequenced to analyze the genetic diversity of six populations of G.officinalis.[Result] A total of 10 distinct haplotypes were detected in the studied populations,and seven variable sites were found by comparing their sequences.G.officinalis with high-level genetic diversity（h=0.771）.Genetic diversity was largely varied within populations,ranging from 0.563 to 0.857 for haplotype diversity,and from 0.002 43 to 0.005 83 for nucleotide diversity,respectively.Genetic differentiation among populations（Gst） of G.officinalis was 0.196 0;gene flow（Nm） was 2.05;80.40% of the genetic variability occurred within population.[Conclusion] The cultivated G.officinalis in Qinghai showed rich genetic diversity,which is beneficial for the production of high-quality herb medicine.
文摘The root rot is a major disease affecting yield of Gentiana macrophyl a pal , reducing yield or even causing total crop failure. This research introduced the occurrence characteristics and various control techniques of root rot of Gentiana macrophyl a pal , in order to provide references for farmers.
基金Supported by the Youth Fund of Heilongjiang University,China~~
文摘[Objective] This study was to obseve the flower bud differentiation process of Gentiana triflora Pall., and to clarify the flower bud development law and the correlation between flower buds differentiation and external morphology. [Method] The paraffin section method was used to observe the flower bud of Gentiana triflora un- der microscope. [Result] The flower bud differentiation process of Gentiana triflora could be divided into six stages： the undifferentiated stage, initial differentiation stage, sepal primordia differentiation stage, petal primordia differentiation stage, stamen pri- mordia differentiation stage and the pistil primordia differentiation stage. The flower bud differentiation started from early May, when the plant had 10-11 stem nodes, and completed in early June, lasted about 40 d. The effect of plant height on flower bud differentiation was not significant. [Conclusion] The study provided theoretical basis for the high-yield cultivation, variety selection and flowering regulation of Gentiana triflora.
