Two new C19-diterpenoid alkaloids, davidisines A (1) and B (2) along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral meth...Two new C19-diterpenoid alkaloids, davidisines A (1) and B (2) along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral methods, especially 2D NMR techniques.展开更多
The screening of lead compounds in plants is an important way to develop new drugs.Gentiana rhodantha Franch ex Hemsl,belonging to genus Gentiana of Gentianaceae family,has the functions of clearing heat and drying da...The screening of lead compounds in plants is an important way to develop new drugs.Gentiana rhodantha Franch ex Hemsl,belonging to genus Gentiana of Gentianaceae family,has the functions of clearing heat and drying dampness,detoxifying and purging fire,relieving cough and so on.Previous studies have shown that many compounds in G.rhodantha have antitumor activities,but the mechanism is still unclear.The purpose of this study was to investigate the anti-hepatoma activity of the compounds in G.rhodantha by using the knowledge of network pharmacology.A compound-cancer target network with 57 candidate molecules and 38 potential targets was constructed.Analysis of the models showed that the most effective compound in this plant might be compound 47(rhyncoside D)ether,and the most potential target might be GMP synthase(2vxo).We believe that the present study can provide important clues for the study of anti-hepatoma activity.展开更多
Gentiana rhodantha Franch.ex Hemsl.(G.rhodantha)is a perennial herb distributed in southwest China,belonging to the Gentiana genus of Gentianaceae family.Previous research indicated that G.rhodantha contains flavonoid...Gentiana rhodantha Franch.ex Hemsl.(G.rhodantha)is a perennial herb distributed in southwest China,belonging to the Gentiana genus of Gentianaceae family.Previous research indicated that G.rhodantha contains flavonoids,anthraquinones,terpenes and other compounds,which possess the effects of antioxidant,antibacterial,and antitumor.Besides,its dry herb is used as antiphlogistic and antitussive remedy for the treatment of lung,liver,and gallbladder diseases.This review outlines the chemical constituents and biological activities of G.rhodantha,which will be useful for the further research on this plant.展开更多
【目的】为了阐明吲哚丁酸(IBA)诱导青榨槭不定根发生的激素调控机制。【方法】依据青榨槭扦插生根过程的解剖学观察,分别于对照期和4个生根关键时期采集插穗生根部位树皮组织进行IBA处理下的比较转录组学研究和生理指标检测。【结果】...【目的】为了阐明吲哚丁酸(IBA)诱导青榨槭不定根发生的激素调控机制。【方法】依据青榨槭扦插生根过程的解剖学观察,分别于对照期和4个生根关键时期采集插穗生根部位树皮组织进行IBA处理下的比较转录组学研究和生理指标检测。【结果】4个对比组分别鉴定到6774、6256、4522、4571个差异基因。GO(Gene ontoloy)富集分析发现,碳水化合物代谢和不定根发育等条目在不定根表达和伸长阶段高度富集。KEGG(Kyoto encyclopedia of genes and genomes)富集分析显示参与玉米素、油菜素内酯生物合成以及植物激素信号转导途径的差异基因发挥着重要作用。激素含量检测结果表明,高浓度的生长素参与了不定根的诱导过程,而相对低水平的生长素有利于其后期发育;细胞分裂素和玉米素均在愈伤组织形成期出现转运峰;油菜素内酯在生根初期被显著诱导。【结论】IBA刺激青榨槭不定根启动与增强生长素运输相关,不定根形成早期需要一定水平的细胞分裂素积累才能促进生根,玉米素和油菜素内酯的生物合成促进了不定根原基的诱导和启动。展开更多
文摘Two new C19-diterpenoid alkaloids, davidisines A (1) and B (2) along with thirteen known alkaloids were isolated from the whole herb of Delphinium davidii Franch. Their structures were established by spectral methods, especially 2D NMR techniques.
文摘The screening of lead compounds in plants is an important way to develop new drugs.Gentiana rhodantha Franch ex Hemsl,belonging to genus Gentiana of Gentianaceae family,has the functions of clearing heat and drying dampness,detoxifying and purging fire,relieving cough and so on.Previous studies have shown that many compounds in G.rhodantha have antitumor activities,but the mechanism is still unclear.The purpose of this study was to investigate the anti-hepatoma activity of the compounds in G.rhodantha by using the knowledge of network pharmacology.A compound-cancer target network with 57 candidate molecules and 38 potential targets was constructed.Analysis of the models showed that the most effective compound in this plant might be compound 47(rhyncoside D)ether,and the most potential target might be GMP synthase(2vxo).We believe that the present study can provide important clues for the study of anti-hepatoma activity.
文摘Gentiana rhodantha Franch.ex Hemsl.(G.rhodantha)is a perennial herb distributed in southwest China,belonging to the Gentiana genus of Gentianaceae family.Previous research indicated that G.rhodantha contains flavonoids,anthraquinones,terpenes and other compounds,which possess the effects of antioxidant,antibacterial,and antitumor.Besides,its dry herb is used as antiphlogistic and antitussive remedy for the treatment of lung,liver,and gallbladder diseases.This review outlines the chemical constituents and biological activities of G.rhodantha,which will be useful for the further research on this plant.
文摘【目的】为了阐明吲哚丁酸(IBA)诱导青榨槭不定根发生的激素调控机制。【方法】依据青榨槭扦插生根过程的解剖学观察,分别于对照期和4个生根关键时期采集插穗生根部位树皮组织进行IBA处理下的比较转录组学研究和生理指标检测。【结果】4个对比组分别鉴定到6774、6256、4522、4571个差异基因。GO(Gene ontoloy)富集分析发现,碳水化合物代谢和不定根发育等条目在不定根表达和伸长阶段高度富集。KEGG(Kyoto encyclopedia of genes and genomes)富集分析显示参与玉米素、油菜素内酯生物合成以及植物激素信号转导途径的差异基因发挥着重要作用。激素含量检测结果表明,高浓度的生长素参与了不定根的诱导过程,而相对低水平的生长素有利于其后期发育;细胞分裂素和玉米素均在愈伤组织形成期出现转运峰;油菜素内酯在生根初期被显著诱导。【结论】IBA刺激青榨槭不定根启动与增强生长素运输相关,不定根形成早期需要一定水平的细胞分裂素积累才能促进生根,玉米素和油菜素内酯的生物合成促进了不定根原基的诱导和启动。