期刊文献+
共找到3,582篇文章
< 1 2 180 >
每页显示 20 50 100
Houpolignols A-D,enantiomeric obovatol oligomeric neolignans with anti-NASH activities from Magnolia officinalis var.biloba
1
作者 Wei-Ming Huang Yue-You Yang +5 位作者 Ping Ying Yu-Qian Cai Tian-Jie Cao Chuan-Lu Fu Ling-Yi Kong Wen-Jun Xu 《Chinese Chemical Letters》 2025年第7期479-483,共5页
Houpolignols A-C(1-3),unprecedented oligomers of dearomatized obovatol with tetracyclo[9.3.1.0^(2,7).0^(9,14)]pentadecane(1 and 2)and 8,18-dioxapentacyclo[13.3.1.1^(5,9).0^(4,16).0^(13,20)]icosane(3)core structures,to... Houpolignols A-C(1-3),unprecedented oligomers of dearomatized obovatol with tetracyclo[9.3.1.0^(2,7).0^(9,14)]pentadecane(1 and 2)and 8,18-dioxapentacyclo[13.3.1.1^(5,9).0^(4,16).0^(13,20)]icosane(3)core structures,together with their biosynthetic congener houpolignol D(4),were isolated from the cortex of Magnolia officinalis var.biloba.Their structures were determined by spectroscopic analyses,Xray crystallography data,and quantum chemical calculations.Radical cascade cyclizations were proposed as crucial biosynthetic steps of 1-4.(±)-1 showed anti-nonalcoholic steatohepatitis(NASH)effect by promoting fatty acid beta-oxidation. 展开更多
关键词 Magnolia officinalis NEOLIGNAN Houpolignols A-D Radical cyclization Anti-NASH OBOVATOL
原文传递
Different kinds of functional components with multiple biological activities in Cornus officinalis as food and medicinal resource: a review
2
作者 Yuhang Liu Lili Cui +3 位作者 Wenyi Kang Zhenhua Liu Yan Zhang Changyang Ma 《Food Science and Human Wellness》 2025年第12期4717-4754,共38页
Cornus officinalis Sieb.et Zucc.,a valuable Chinese medicine resource,has a long clinic utilization history.In recent years,more research focus on the chemical composition and pharmacological activity of C.officinalis... Cornus officinalis Sieb.et Zucc.,a valuable Chinese medicine resource,has a long clinic utilization history.In recent years,more research focus on the chemical composition and pharmacological activity of C.officinalis which was used as health foods and drugs.This paper summarized the active ingredients,pharmacological activities and molecular mechanisms of C.officinalis in recent 5 years to provide reference for the development and utilization of C.officinalis.A total of 149 active constituents of C.officinalis were summarized,including iridoids(64),flavonoids(18),lignin(17),tannins(16),organic acids and phenolic acids(14),triterpenes(11)and others(9),which were further subdivided according to their pharmacological effects.It was found that the pharmacological effects of C.officinalis were very extensive,mainly including antioxidant,anti-inflammatory,anti-tumor,neuroprotective and other biological activities.Among these activities,the anti-inflammatory and hypoglycemic mechanisms showed multi-pathway and multi-target characteristics,which were elaborated systematically.However,there are still many compounds in C.officinalis that have not been studied for biological activity,which means that it still has potential pharmacological activity to be further studied.C.officinalis not only has high medicinal value,but also has a potential edible resource.However,limited by people's understanding of the nutritional value of C.officinalis,few product types and incomplete processing technology,people's acceptance of the edible value of C.oficinalis is not high,and it needs to be further developed and utilized. 展开更多
关键词 Cornus officinalis Active ingredients Biological activity Mechanism
暂未订购
Analysis of Differences in Medicinal Component Contents of Magnolia officinalis at Different Altitudes and Their Causes
3
作者 Guozhong SU Wuniu WANG +2 位作者 Linchang TUBI Jingqiu FENG Yuan LIU 《Medicinal Plant》 2025年第2期1-6,13,共7页
[Objectives]To analyze the differences in medicinal component contents of Magnolia officinalis across different altitude gradients and explore their causes.[Methods]In this experiment,M.officinalis trees aged 15-20 ye... [Objectives]To analyze the differences in medicinal component contents of Magnolia officinalis across different altitude gradients and explore their causes.[Methods]In this experiment,M.officinalis trees aged 15-20 years growing at four altitudes(1301,1444,1573,and 1643 m)were selected as experimental materials.Leaf traits,soil physicochemical properties,and medicinal component contents were investigated,and the relationships among leaf traits,soil physicochemical properties,and medicinal components were analyzed.[Results]With increasing altitude,the specific leaf area(SLA)of M.officinalis significantly increased,while stomatal density,vein density,leaf thickness,and mesophyll tissue thickness decreased.Soil total nitrogen(TN),total phosphorus(TP),total potassium(TK),available nitrogen(AN),and organic matter contents(OM)decreased significantly with altitude,whereas available potassium(AK)showed the opposite trend.The contents of medicinal components magnolol and honokiol in M.officinalis also significantly decreased with altitude.Correlation analysis revealed that,in addition to altitude,soil physicochemical properties(pH,TP,OM)and leaf traits(leaf thickness,palisade tissue thickness,SLA)were significantly correlated with magnolol and honokiol contents.[Conclusions]M.officinalis at lower altitudes exhibited better growth and higher magnolol and honokiol contents,which may be attributed to higher soil nutrient availability in low-altitude regions.This study provides guidance for selecting cultivation sites and optimizing planting patterns for M.officinalis. 展开更多
关键词 Magnolia officinalis ALTITUDE Medicinal components Leaf traits Soil physicochemical properties
在线阅读 下载PDF
A tailored database combining reference compound-derived metabolite,metabolism platform and chemical characteristic of Chinese herb followed by activity screening:Application to Magnoliae Officinalis Cortex
4
作者 Zhenzhen Xue Yudong Shang +2 位作者 Lan Yang Tao Li Bin Yang 《Journal of Pharmaceutical Analysis》 2025年第4期775-785,共11页
A strategy combining a tailored database and high-throughput activity screening that discover bioactive metabolites derived from Magnoliae Officinalis Cortex(MOC)was developed and implemented to rapidly profile and di... A strategy combining a tailored database and high-throughput activity screening that discover bioactive metabolites derived from Magnoliae Officinalis Cortex(MOC)was developed and implemented to rapidly profile and discover bioactive metabolites in vivo derived from traditional Chinese medicine(TCM).The strategy possessed four characteristics:1)The tailored database consisted of metabolites derived from big data-originated reference compound,metabolites predicted in silico,and MOC chemical profile-based pseudomolecular ions.2)When profiling MOC-derived metabolites in vivo,attentions were paid not only to prototypes of MOC compounds and metabolites directly derived from MOC compounds,as reported by most papers,but also to isomerized metabolites and the degradation products of MOC compounds as well as their derived metabolites.3)Metabolite traceability was performed,especially to distinguish isomeric prototypes-derived metabolites,prototypes of MOC compounds as well as phase I metabolites derived from other MOC compounds.4)Molecular docking was utilized for high-throughput activity screening and molecular dynamic simulation as well as zebrafish model were used for verification.Using this strategy,134 metabolites were swiftly characterized after the oral administration of MOC to rats,and several metabolites were reported for the first time.Furthermore,17 potential active metabolites were discovered by targeting the motilin,dopamine D2,and the serotonin type 4(5-HT4)receptors,and part bioactivities were verified using molecular dynamic simulation and a zebrafish constipation model.This study extends the application of mass spectrometry(MS)to rapidly profile TCM-derived metabolites in vivo,which will help pharmacologists rapidly discover potent metabolites from a complex matrix. 展开更多
关键词 Tailored database Metabolite traceability Activity screening Magnoliae officinalis Cortex In vivo metabolite
在线阅读 下载PDF
Identification and Expression Analysis of AP2/ERF Gene Family Members in Different Growth Periods of Magnolia officinalis
5
作者 Mingxin Zhong Yuanyuan Zhang +8 位作者 Xinlei Guo Bainian Zhang Chengjia Tan Zhuo Xu Xin Hu Daren Feng Zhenpeng Xi Qian Wang Hui Tian 《Phyton-International Journal of Experimental Botany》 2025年第10期3061-3084,共24页
Magnolia officinalis is a perennial deciduous tree that has medicinal properties.The AP2/ERF gene family has a number of roles in long-term growth and metabolism.The expression of this function varies with the growth ... Magnolia officinalis is a perennial deciduous tree that has medicinal properties.The AP2/ERF gene family has a number of roles in long-term growth and metabolism.The expression of this function varies with the growth period.In this work,based on the transcriptome data of Magnolia officinalis,the complete coding gene of Magnolia officinalis was obtained,and the corresponding protein sequence was retrieved from NCBI and compared with the model plant Arabidopsis thaliana.After screening,75 protein sequences from the AP2/ERF gene family were identified and called MoAP2/ERF1–MoAP2/ERF75,followed by bioinformatics analysis.75 AP2/ERF gene families were found and classified into four subfamilies.Their protein architectures had one or more conserved AP2 domains,which were typically unstable and hydrophilic.Subcellular research revealed that it was primarily located in the nucleus.Among them,the DREB subfamily showed stronger activity in the early growth period of Magnolia officinalis,suggesting that Magnolia officinalis had stronger resistance to adversity during this period.The 15 members of the MoAP2/ERF gene family showed significant differences during different growth periods,and they regulated the gene expression of Magnolia officinalis by binding to DNA.The 15 MoAP2/ERF gene families have a wide range of physiological activities in biological processes,cellular components,and molecular functions.Including MoAP2/ERF55 can catalyze imidazole glycerol phosphate synthase activity;MoAP2/ERF39 acts as a transcriptional activator of Pti6. 展开更多
关键词 Magnolia officinalis AP2/ERF gene family BIOINFORMATICS DREB growing period
在线阅读 下载PDF
Network Pharmacology Based Study on the Mechanism of Mongolian Medicine Valeriana officinalis L.on Liver Cancer
6
作者 Lan LAN Ning XU +2 位作者 Ri HU Yunfeng BAI Liang XU 《Medicinal Plant》 2025年第1期49-54,共6页
[Objectives]To explore the mechanism of Mongolian medicine Valeriana officinalis L.on liver cancer by network pharmacology.[Methods]The HERB database of V.officinalis L.was searched,and the Uniprot database was used t... [Objectives]To explore the mechanism of Mongolian medicine Valeriana officinalis L.on liver cancer by network pharmacology.[Methods]The HERB database of V.officinalis L.was searched,and the Uniprot database was used to normalize and standardize the targets.Liver cancer targets were searched through GeneCards,DISGENET,and other databases.Venny website was used to obtain the intersection target of valerian active ingredients and liver cancer disease.The protein-protein interaction(PPI)network of the intersection targets was analyzed by STRING database,and the PPI network was constructed by Cytoscape software.The David database was used for GO functional annotation and KEGG pathway enrichment analysis to obtain the relevant pathways in the treatment of liver cancer with Mongolian medicine V.officinalis.The corresponding chemical components,targets and pathways of liver cancer were imported into Cytoscape software to construct the network topology of"chemical component-disease-target-pathway".According to the analysis results,the potential of the active components in V.officinalis as a therapeutic drug for liver cancer was evaluated,and the correlation between the results of network pharmacology analysis and clinical treatment of liver cancer was discussed,which provided a reference for clinical application.[Results]A total of 13 kinds of chemical components and 108 drug disease intersection target genes were screened,and the core genes acting on diseases were caffeic acid,perillyl acetate,(+)-alpha-Terpineol,eucalyptol,etc.;GO functional enrichment analysis involved 389 items of biological processes,62 items of cellular components and 120 items of molecular functions.Enrichment analysis of KEGG signaling pathways screened out chemical carcinogenesis-receptor activation,cancer pathways,prolactin signaling pathways,proteoglycans in cancer,EGFR tyrosine kinase inhibitor resistance and other signaling pathways.[Conclusions]The mechanism of Mongolian medicine V.officinalis on liver cancer was studied by network pharmacology.It was found that it can inhibit the proliferation of liver cancer cells from multiple targets and pathways.This is expected to provide a theoretical basis for further basic experimental research. 展开更多
关键词 Network pharmacology Mongolian medicine Valeriana officinalis L. Liver cancer Mechanism of action
暂未订购
Climate Suitability Zoning of Morinda officinalis F. C. How and Sarcandra glabra (Thunb.) Nakai Planting in Xinfeng County Based on GIS
7
作者 Jundao PAN Xizi PEI +2 位作者 Wenjian PAN Xiaoyun CHEN Jie GAO 《Meteorological and Environmental Research》 2025年第1期24-27,36,共5页
Based on the meteorological data of 24 automatic stations in Xinfeng County,combined with the climatic conditions for the growth of Morinda officinalis F.C.How and Sarcandra glabra(Thunb.)Nakai,the climate suitability... Based on the meteorological data of 24 automatic stations in Xinfeng County,combined with the climatic conditions for the growth of Morinda officinalis F.C.How and Sarcandra glabra(Thunb.)Nakai,the climate suitability zoning indicators of M.officinalis and S.glabra in Xinfeng County were constructed by relevant statistical methods,and the climate suitability zoning indicators were divided into four grades:most suitable,suitable,sub-suitable and unsuitable.According to the results of expert scores,the relevant growth impact factors were assigned weight values.Based on geographic information system(GIS),the climate suitability zoning of M.officinalis and S.glabra planting in Xinfeng County was carried out.The results show that most areas of Xinfeng County were suitable for planting M.officinalis and S.glabra.Among them,the most suitable planting areas of M.officinalis were mainly distributed in most of Huilong Town,from Jiangnan Community of Fengcheng Street to Yuntianhai area of Meikeng Town,Matouwantian Village and areas to the south,and areas to the south of Zhutong Village,Fengcheng Street.The most suitable areas for S.glabra planting were mainly distributed in Puchang Village of Huilong Town,the northeast of Huangzhai Town,the south of Fengcheng Street,and the central-southern part of Matou Town.The zoning results provide a scientific basis for the rational layout of M.officinalis and S.glabra planting in Xinfeng County. 展开更多
关键词 Morinda officinalis F.C.How Sarcandra glabra(Thunb.)Nakai Climate suitability Geographic information system Xinfeng County
在线阅读 下载PDF
Variation, heredity and selection of effective ingredients in Magnolis officinalis of different provenances 被引量:4
8
作者 童再康 曾燕如 斯金平 《Journal of Forestry Research》 SCIE CAS CSCD 2002年第1期7-11,82,共5页
Bark samples of Magnolis officinalis were collected from a 7-year-old trial plantation with 13 provenances in Jingning County of Zhejiang Province on June 25, 2000. The contents of magnolol and honokiol of M. officina... Bark samples of Magnolis officinalis were collected from a 7-year-old trial plantation with 13 provenances in Jingning County of Zhejiang Province on June 25, 2000. The contents of magnolol and honokiol of M. officinalis were analyzed by the method of HPLC (High Performance Liquid Chromatogram). The results showed that such qualitative traits as the content of magnolol, content of honokiol, total content of key phenols, and the ratio of magnolo to honokiol differ significantly between the provenances. The provenances with a sharpened leaf tip from the western part of Hubei Province has a highest content of phenols, and that with a concave leaf tip from the Lushan Mountain has a lowest content of phenols. All these four qualitative traits were genetically controlled, with a heritability between 0.8342 and 0.9871 in terms of provenance. In addition, both longitudinal and latitudinal geographical variations could be found, with longitudinal variations being dominant. As a result, 3 superior provenances from Wufeng, Enshi and Hefeng of the western part of Hubei as well as 10 high-quality individuals were selected. 展开更多
关键词 Magnolia officinalis Provenance trial MAGNOLOL HONOKIOL Geographical variation Provenance selection
在线阅读 下载PDF
Greenhouse Intercropping of Green Asparagus(Asparagus officinalis Linn) and Coriander(Coriandrum sativum L.) 被引量:1
9
作者 郑毅 李玉环 +2 位作者 李哲 徐海玉 凤桐 《Agricultural Science & Technology》 CAS 2016年第8期1842-1844,1848,共4页
Greenhouse cultivation in northern China has the characteristic of single mode, and the intercropping mode is not common. Greenhouse intercropping of green asparagus (Asparagus officinalis Linn) and coriander (Cori... Greenhouse cultivation in northern China has the characteristic of single mode, and the intercropping mode is not common. Greenhouse intercropping of green asparagus (Asparagus officinalis Linn) and coriander (Coriandrum sativurn L.) not only could increase vegetable kinds, but also could improve cropping index, and the asparagus growers' income could also be improved. This paper introduced the intercropping technique of green asparagus and coriander, so as to provide technical support for large-area extension of greenhouse green asparagus cultivation and break the situation of single mode for .qreenhouse cultivation. 展开更多
关键词 Asparagus officinalis Linn INTERCROPPING Coriandrum Sativum L.
在线阅读 下载PDF
In vitro anti-leishmanial activity of methanolic extracts of Calendula officinalis flowers, Datura stramonium seeds, and Salvia officinalis leaves 被引量:2
10
作者 Banafsheh Nikmehr Habib Ghaznavi +2 位作者 Amir Rahbar Samira Sadr Saeed Mehrzadi 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2014年第6期423-427,共5页
AIM: The anti-leishmanial activity of methanolic extracts of Calendula officinalis flowers, Datura stramonium seeds, and Salvia officinalis leaves against extracellular(promastigote) and intracellular(amastigote) form... AIM: The anti-leishmanial activity of methanolic extracts of Calendula officinalis flowers, Datura stramonium seeds, and Salvia officinalis leaves against extracellular(promastigote) and intracellular(amastigote) forms of Leishmania major were evaluated in this study. METHOD: In the first stage, promastigote forms of L. major, were treated with different doses of the plant extracts in a 96-well tissue-culture microplate and IC50 values for each extract were measured with colorimetric MTT assay. In the second stage, macrophage cells were infected with L. major promastigotes. Infected macrophages were treated with plant extracts. Then the macrophages were stained with Gimsa and the number of infected macrophages and amastigotes were counted with a light microscope. RESULTS: The results indicated that the plant extracts inhibited the growth of promastigotes and amastigotes of L. major. Inhibitory concentrations(IC50) for promastigote assay were 108.19, 155.15, and 184.32 μg·mL-1 for C. officinalis flowers, D. stramonium seeds and S. officinalis, respectively. The extracts also reduced the number of amastigotes in macrophage cells from 264 for control group to 88, 97, and 102 for test groups. Although the anti-leishmanial activity of the extracts were not comparable with the standard drug, miltefosine; but they showed significant efficiency in reducing the number of amastigotes in macrophages, in comparison with the control group(P < 0.001). These plant extracts had lower toxicity compared with miltefosine. CONCLUSION: This study demonstrates the potential efficacy of the methanolic extracts of C. officinalis flowers, D. stramonium seeds, and S. officinalis leaves to control of cutaneous leishmaniasis. 展开更多
关键词 Leishmania major PROMASTIGOTE Amastigote Calendula officinalis Datura stramonium Salvia officinalis
原文传递
Genetic Analysis of Monosomic Alien Addition Line MAAL8 of O. officinalis(CC)-O. sativa(AA)
11
作者 刘如亮 刘虹 +2 位作者 陈雁 覃瑞 李刚 《Agricultural Science & Technology》 CAS 2011年第5期702-706,772,共6页
[Objective] By carrying out the anther culture on the monosomic alien addition line MAAL8 of O.officinalis-O.sativa and the back crossing with O.sativa H1493,the genetic characteristics of monosomic alien addition lin... [Objective] By carrying out the anther culture on the monosomic alien addition line MAAL8 of O.officinalis-O.sativa and the back crossing with O.sativa H1493,the genetic characteristics of monosomic alien addition line were studied.[Method] The phenotype analysis was used to study the separation proportion of progeny.Moreover,SSR and the methylation analysis were used to study the transmission behavior of nonhomologous chromosome.[Result] 78 plants of 145 backcross progenies preserved the rolled leaf mark trait of MAAL8.In 32 anther culture plants,five plants had the normal rolled leaves,and two plants had the extremely rolled leaves.The rest had the flat leaves.14 couples of SSR markers were used to analyze,and it indicated that all the rolled-leaf plants could obtain the characteristic band type of O.officinalis,but the flat-leaf plants showed none of them.11 polymorphic RFLP markers were used to carry out Methylation-Sensitive Southern analysis.It showed that the methylation variation manners of eight markers between AA and CC genomes were different.[Conclusion] The nonhomologous chromosome of MAAL8 could pass to the progenies independently and integrally via the meiosis,and the phenotype characteristics didn't change.Moreover,the methylation manner of O.officinalis could inherit stably in the hybrid progeny as the addition of single chromosome.The stability of methylation might have the certain effect on the relatively independent inheritance of nonhomologous chromosome in the genome environment of O.sativa. 展开更多
关键词 Oryza officinalis Monosomic alien addition line Anther culture Methylation variation
在线阅读 下载PDF
Study on Chloroplast psbA-trnH Nucleotide Variation and Genetic Differentiation in Cultivated Plants of Gentiana officinalis from Qinghai
12
作者 张得钧 高庆波 +1 位作者 李福安 李永平 《Agricultural Science & Technology》 CAS 2011年第10期1417-1419,1423,共4页
[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
关键词 Gentiana officinalis H.Smith cpDNA psbA-trnH Genetic diversity
在线阅读 下载PDF
Distribution, Development and Utilization of Bioactive Components Resources of Russian Melilotus officinalis
13
作者 林年丰 梁硕 《Agricultural Science & Technology》 CAS 2017年第12期2312-2316,2319,共6页
To confirm the content and distribution of bioactive components in roots, stems, leaves and grains of Russian Me/i/otus officina/is 'Sligen 1 ", an experiment involving bioactive components detection and field plant... To confirm the content and distribution of bioactive components in roots, stems, leaves and grains of Russian Me/i/otus officina/is 'Sligen 1 ", an experiment involving bioactive components detection and field planting was conducted. Kjeldahl method and high performance gas chromatography were used to detect the protein. The automatic amino acid analyzer was used to detect amino acid. Gas chromatography-mass spectrometry (GC-MS) and molecular distillation apparatus were used to confirm the fatty acid content. Gravimetric method was used to detect saponin and alkaloid contents. High performance liquid chromatography was used to detect the coumarin content. The polyphenol content was determined by forint reagent colorimetric method. Anthracene copper-sulfuric acid colorimetry was used to detect the polysaccharide, and aluminum nitrate-sodium nitrite-sodium hydroxide col- orimetric method was used to confirm flavone. The results showed that protein and amino acid were mainly distributed in leaves and seeds. The fatty acid was mainly distributed in seeds. The saponin was mainly distributed in roots and leave. The polyphenol was mainly distributed in roots, stems and leaves. The alkaloid was mainly distributed in stems, leaves and seeds. Seeds mainly contained coumarin. M. officinalis had little polysaccharide and flavone. The total production of bioactive in- gredients was 3 016.3 kg/hm2. The output of crude protein, amino acids and fatty acids was 1 400.6, 1 246.8, 112.2, respectively. The yields of effective components saponins, alkaloids, polyphenols and coumarin were 97.0, 77.9, 41.7, 40.1 kg/hm2, respectively. After separation, extraction and purification, those components can be used as the natural ingredients to develop medicine, food, chemical and other biotechnological products. 展开更多
关键词 Melilotus officinalis Bioactive component Distribution characteristics De-velopment and utilization
在线阅读 下载PDF
A New Phenylethanoid Glucoside from Buddleia officinalis 被引量:1
14
作者 李教社 赵玉英 马立斌 《Journal of Chinese Pharmaceutical Sciences》 CAS 1997年第4期6-9,共4页
A new phenylethanoid glycoside, neobudofficide B was isolated from Buddleia officinalis. On the basis of spectral and chemical evidence, the glycoside was identified as β ( 3′, 4′ dihydroxy, 6′ N pyridinechlo... A new phenylethanoid glycoside, neobudofficide B was isolated from Buddleia officinalis. On the basis of spectral and chemical evidence, the glycoside was identified as β ( 3′, 4′ dihydroxy, 6′ N pyridinechloride phenyl ) ethyl O α L rhamnopyranosyl ( 1→3 ) β D ( 4″ O caffeoyl ) glucopyranoside. 展开更多
关键词 Buddleia officinalis Phenylethenoid glycoside Neobudofficide B
全文增补中
Comparative Physical Mapping of Bph3 with BAC-FISH in Oryza officinalis and O. sativa 被引量:3
15
作者 鄢慧民 覃瑞 +2 位作者 金危危 何光存 宋运淳 《Acta Botanica Sinica》 CSCD 2002年第5期583-587,共5页
A FISH procedure was adopted to physical mapping rice RFLP marker RZ69 and the BAC clone 38J9 screened by RZ69 which is linked to gene Bph3 in Oryza saliva L. and O. officinalis Well ex: Watt. The FISH results showed ... A FISH procedure was adopted to physical mapping rice RFLP marker RZ69 and the BAC clone 38J9 screened by RZ69 which is linked to gene Bph3 in Oryza saliva L. and O. officinalis Well ex: Watt. The FISH results showed that both 38J9 and RZ69 were located in the middle of 4S in O. officinalis and the centromere area of 4S in O. sativa. In O. officinalis the percentage distances from the centromere to the hybridization sites were 20.00 +/- 5.40 and 22.12 +/- 3.44, the detection rates were 50.00% and 6.14%, but in O. sativa they were 0 and 0, 56.10% and 6.29% correspondingly. The results obtained from the BAC and RFLP clone were almost the same in the cultivated rice and O. officinalis. It was suggested that die marker RZ69 of the cultivated rice and its homologous sequence in O. officinalis were in the same BAC clone, the homologous sequence of Bph3 in O. officinalis should be located at the sites hybridized by both RZ69 and 38J9. Many signals on different chromosomes of O. officinalis were observed under no blocking with Cot-1 DNA, showing that the repetitive sequences were also homologous between O. sativa and O. officinalis. The identification of chromosome 4 of O. officinalis is based on comparative map with RG214 and BAC clone screened by RG214. The feasibility of comparative physical mapping performed between O. sativa and O. officinalis with rice BAC clones was discussed. 展开更多
关键词 Oryza officinalis BAC-FISH comparative physical mapping Bph3
在线阅读 下载PDF
A new indole alkaloid from Nauclea officinalis(Pierre ex Pitard) Merr. et Chun 被引量:1
16
作者 皮晓雪 谢可辉 +4 位作者 涂光忠 蔡田芝 杨蓉 吴琼 付宏征 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2014年第5期306-310,共5页
From the aerial parts ofNauclea officinalis (Pierre ex Pitard) Merr. et Churl, one new indole alkaloid paratunamide E (1) has been isolated together with six known indole alkaloids, paratunamide A (2), nauclealo... From the aerial parts ofNauclea officinalis (Pierre ex Pitard) Merr. et Churl, one new indole alkaloid paratunamide E (1) has been isolated together with six known indole alkaloids, paratunamide A (2), nauclealotide C (3), nauclealotide A (4), vincosamide (5), strictosamide (6) and naucleamide F (7). Naucleamide F (7) was isolated from Nauclea officinalis for the first time. All of the seven compounds above were elucidated by spectroscopic methods including 1 D and 2 D NMR soectroscoDic analyses. 展开更多
关键词 Nauclea officinalis Indole alkaloid Structural identification
原文传递
药用野生稻(Oryza officinalis Wall)和转bar基因水稻(Oryza sativa L.)花粉杂交的基因漂移 被引量:16
17
作者 宋小玲 强胜 +2 位作者 刘琳莉 徐言宏 刘友良 《南京农业大学学报》 CAS CSCD 北大核心 2002年第3期5-8,共4页
采用生殖生物学方法研究了药用野生稻和转bar基因水稻花粉杂交的基因漂移。结果表明 ,供试水稻花粉在药用野生稻柱头上的萌发生长与药用野生稻自花授粉花粉的萌发生长有一定差异 ,表现在穿过柱头的花粉粒百分率及内容物释放和正在凝缩... 采用生殖生物学方法研究了药用野生稻和转bar基因水稻花粉杂交的基因漂移。结果表明 ,供试水稻花粉在药用野生稻柱头上的萌发生长与药用野生稻自花授粉花粉的萌发生长有一定差异 ,表现在穿过柱头的花粉粒百分率及内容物释放和正在凝缩、释放的花粉粒百分率较少。虽然转基因水稻花粉能在药用野生稻柱头上正常萌发生长 ,并能释放内容物 ,但杂交后结实率为 0 ,表明转基因水稻和药用野生稻杂交不亲和。他们的不亲和性不是在花粉的萌发和穿过柱头这一阶段 ,具体原因有待进一步研究。在本实验条件下转基因水稻和药用野生稻没有发生成功的基因交流。 展开更多
关键词 药用野生稻 转BAR基因水稻 花粉杂交 基因漂移 生殖生物学 抗除草剂基因 安全性
在线阅读 下载PDF
陇东黄土高原石油污染土壤环境因子对金盏菊(Calendula officinalis)-微生物联合修复的响应 被引量:23
18
作者 王金成 井明博 +4 位作者 段春燕 张希彪 刘建新 肖朝霞 周天林 《环境科学学报》 CAS CSCD 北大核心 2015年第9期2971-2981,共11页
为筛选适合陇东黄土高原石油污染土壤修复植物,选取当地"适生"植物金盏菊(Calendula officinalis)联合微生物菌剂开展了为期5个月的原位修复实验.采用常规方法和PCR-DGGE技术分析了修复过程中土壤理化性质、酶活性及土壤微生... 为筛选适合陇东黄土高原石油污染土壤修复植物,选取当地"适生"植物金盏菊(Calendula officinalis)联合微生物菌剂开展了为期5个月的原位修复实验.采用常规方法和PCR-DGGE技术分析了修复过程中土壤理化性质、酶活性及土壤微生物群落遗传多样性等15项土壤环境因子的动态变化情况及其对金盏菊生态修复的响应.结果表明,随着原位修复的进行,1土壤脲酶、多酚氧化酶、过氧化氢酶及脱氢酶活性均不同程度呈增加的趋势(p<0.05).2土壤TPHs、p H、有机质、含盐率的变化情况不尽相同,但总体呈下降的趋势(p<0.05);土壤碱解氮、速效磷及速效钾含量总体呈上升趋势(p<0.05).3土壤微生物群落遗传多样性结果显示,Shannon-Wiener多样性指数和Pielou均匀度指数整体呈逐步增加的趋势.4PCA分析结果显示,土壤脲酶、脱氢酶及碱解氮等环境因子对金盏菊修复表现为促进作用,而有机质含量过高将不利于金盏菊的植物修复.金盏菊和微生物菌剂联合修复过程中,土壤多酚氧化酶、速效磷、脱氢酶及速效钾发挥主要作用,而土壤TPHs和含盐率过高则影响了联合修复效果.本研究旨在分析金盏菊用于陇东地区油污土壤的生态响应,结果有助于筛选出适合陇东黄土高原土壤类别-适生植物-土著降解菌群的组合,利用乡土物种的适生性降低修复成本,为陇东地区油污土壤生态修复提供新的技术方案和背景资料. 展开更多
关键词 陇东黄土高原 石油污染土壤 金盏菊 联合修复 环境因子
原文传递
用荧光显微镜技术观察药用野生稻(Oryza officinalis Wall)和转基因水稻的不亲和性 被引量:14
19
作者 刘琳莉 强胜 +1 位作者 宋小玲 胡金良 《中国农业科学》 CAS CSCD 北大核心 2004年第4期469-472,T001,共5页
采用荧光显微镜技术观察转基因水稻花粉在药用野生稻柱头上的萌发及在花柱内的生长过程,以明确两者之间不亲和性发生的阶段,为判断其能否发生基因漂流提供依据。结果表明,两种转基因栽培稻(Y003和99t)的花粉在药用野生稻柱头上的萌发率... 采用荧光显微镜技术观察转基因水稻花粉在药用野生稻柱头上的萌发及在花柱内的生长过程,以明确两者之间不亲和性发生的阶段,为判断其能否发生基因漂流提供依据。结果表明,两种转基因栽培稻(Y003和99t)的花粉在药用野生稻柱头上的萌发率均比药用野生稻自花授粉的低,花粉管在花柱中的生长速度较慢,且分别在到达花柱中部(Y003)或花柱基部(99t)时停止生长,顶端异常膨大,杂交子房逐渐萎缩,结实率为0。药用野生稻与栽培稻杂交不亲和的原因是花粉管在花柱中停止生长、不能进入胚囊完成受精,在自然条件下转基因栽培稻中的外源基因向药用野生稻漂流的可能性较小。 展开更多
关键词 荧光显微镜技术 药用野生稻 转基因水稻 杂交不亲和性 基因漂流
在线阅读 下载PDF
川牛膝(Cyathula officinalis Kuan.)RAPD和AFLP标记的多态性聚类分析 被引量:9
20
作者 赵永亮 傅体华 +1 位作者 范巧佳 任正隆 《安徽农业科学》 CAS 北大核心 2008年第16期6682-6686,共5页
[目的]用RAPD和AFLP技术对采自主产区不同地域的川牛膝Cyathula officinalis Kuan.、头花杯苋Cyathula capitata(Wall) Moq及它们的杂交品种杂交牛膝Hybrid accsssion进行多态性和聚类分析研究。[方法]用酚-氯仿法提取的基因组DNA,经RAP... [目的]用RAPD和AFLP技术对采自主产区不同地域的川牛膝Cyathula officinalis Kuan.、头花杯苋Cyathula capitata(Wall) Moq及它们的杂交品种杂交牛膝Hybrid accsssion进行多态性和聚类分析研究。[方法]用酚-氯仿法提取的基因组DNA,经RAPD及AFLP程序扩增后分别用琼脂糖凝胶和PAGE电泳检测,使用NTSYSpc-2.10s软件用UPGMA方法对检测结果进行聚类。[结果]RAPD和AFLP技术在分析遗传多样性和品种鉴定方面各有优缺点;采自同一地方的川牛膝具有最近的亲缘关系,头花杯苋、杂交牛膝与其他采自各地的川牛膝品种之间的遗传差异较大。[结论]在川牛膝中,DNA的差异与地域性有较大关系,说明药材确有地道性的特征,从而在DNA水平上证明了药用植物上的地道性观点。 展开更多
关键词 AFLP 川牛膝 遗传多样性 RAPD
在线阅读 下载PDF
上一页 1 2 180 下一页 到第
使用帮助 返回顶部