A new forsythenside, 4-hydroxy-4-[8-[[1-[（4-hydroxyphenyl）acetyl]-β-D-glucopyranosyl-6-]oxy]ethy1]-2,5-cyclohexadien-1- one, named forsythenside F, was isolasted from the plant of Forsythia suspensa （Thunb.） Vahl...A new forsythenside, 4-hydroxy-4-[8-[[1-[（4-hydroxyphenyl）acetyl]-β-D-glucopyranosyl-6-]oxy]ethy1]-2,5-cyclohexadien-1- one, named forsythenside F, was isolasted from the plant of Forsythia suspensa （Thunb.） Vahl. The structure of the new compound was established on the basis of various spectroscopic analysis, including ^1H NMR, ^13C NMR, 2D NMR techniques （HMBC and HSQC）, and HR-ESI-MS.展开更多
Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- ...Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- and C-13-NMR, DEPT, H-1-H-1 COSY, H-1-C-13 COSY, NOE difference, HMBC, FABMS, CIMS, and chemical reactions.展开更多
Weeping forsythia (Forsythia suspensa,Oleaceae) is a deciduous broad-leaved tree species distributed in the warm temperate zone of China.However,the species still lacks a chromosome-level genome.In this study,the form...Weeping forsythia (Forsythia suspensa,Oleaceae) is a deciduous broad-leaved tree species distributed in the warm temperate zone of China.However,the species still lacks a chromosome-level genome.In this study,the former draft genome (Accession No.WIPI00000000) of weeping forsythia was assembled into 14 chromosomes with a 712.9 Mb genome size.Weeping forsythia underwent a and b whole-genome duplication events.After the divergence between weeping forsythia and Olea europaea,1 453 gene families had a significant expansion,and 1 146 gene families had a significant contraction.The enrichment pathways and ontologies of expanded genes suggested that the tillering,photosynthesis and growth capacity of weeping forsythia were enhanced after the divergence of weeping forsythia and O.europaea.The contracted genes suggested that the resistance of weeping forsythia to cold and drought was weakened.The last glacial period led to a significant decline in the effective population size of weeping forsythia.Forty-six candidate genes were identified for the synthesis of the forsythin and forsythoside A by genomic and transcriptomic data.In this study,we improved the previous draft genome of weeping forsythia.Our genome will provide genomic resources for the subsequent evolution and breeding research of weeping forsythia.展开更多
基金National Science and Technology Project for the 10th Five-Year Plan(No.2001BA701A62-01).
文摘A new forsythenside, 4-hydroxy-4-[8-[[1-[（4-hydroxyphenyl）acetyl]-β-D-glucopyranosyl-6-]oxy]ethy1]-2,5-cyclohexadien-1- one, named forsythenside F, was isolasted from the plant of Forsythia suspensa （Thunb.） Vahl. The structure of the new compound was established on the basis of various spectroscopic analysis, including ^1H NMR, ^13C NMR, 2D NMR techniques （HMBC and HSQC）, and HR-ESI-MS.
文摘Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- and C-13-NMR, DEPT, H-1-H-1 COSY, H-1-C-13 COSY, NOE difference, HMBC, FABMS, CIMS, and chemical reactions.
基金supported by the Open Fund of State Key Laboratory of Tree Genetics and Breeding (Chinese Academy of Forestry)(Grant No.TGB2021004)National Natural Science Foundation of China (Grant Nos.31770225,31570594)Program of Guangzhou Municipal Science and Technology Bureau(Grant No.202102021257)。
文摘Weeping forsythia (Forsythia suspensa,Oleaceae) is a deciduous broad-leaved tree species distributed in the warm temperate zone of China.However,the species still lacks a chromosome-level genome.In this study,the former draft genome (Accession No.WIPI00000000) of weeping forsythia was assembled into 14 chromosomes with a 712.9 Mb genome size.Weeping forsythia underwent a and b whole-genome duplication events.After the divergence between weeping forsythia and Olea europaea,1 453 gene families had a significant expansion,and 1 146 gene families had a significant contraction.The enrichment pathways and ontologies of expanded genes suggested that the tillering,photosynthesis and growth capacity of weeping forsythia were enhanced after the divergence of weeping forsythia and O.europaea.The contracted genes suggested that the resistance of weeping forsythia to cold and drought was weakened.The last glacial period led to a significant decline in the effective population size of weeping forsythia.Forty-six candidate genes were identified for the synthesis of the forsythin and forsythoside A by genomic and transcriptomic data.In this study,we improved the previous draft genome of weeping forsythia.Our genome will provide genomic resources for the subsequent evolution and breeding research of weeping forsythia.
文摘【目的】研究连翘叶提取物(Forsythia suspensa leaves extract,FSLE)对孕马血清促性腺激素(pregnant mare serum gonadotropin,PMSG)在肝脏中代谢的影响,改善在畜牧生产中因PMSG代谢缓慢而造成的氧化应激。【方法】采用半仿生酶醇法提取连翘叶有效成分,给予昆明雌鼠不同含量的FSLE进行动物体内试验;收集小鼠血清,进行酶联免疫吸附试验,检测各组小鼠血清中PMSG的质量浓度;采集小鼠肝脏组织,检测氧化应激指标谷胱甘肽、超氧化物歧化酶、丙二醛和过氧化氢的水平;采用Western-blot检测小鼠肝脏组织孕烷X受体(pregnane X receptor,PXR)和细胞色素酶P45017A1(cytochrome P45017A1,CYP17A1)蛋白的表达水平。【结果】FSLE可显著降低小鼠血清中PMSG的质量浓度,且可以减缓PMSG代谢引起的氧化应激。Western-blot结果显示:FSLE可显著下调小鼠肝组织中PXR和CYP17A1蛋白的表达。【结论】连翘叶提取物可能是通过下调肝脏中PXR和CYP17A1的表达减缓PMSG代谢引起的氧化应激。
