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
目的探讨苏葶平喘汤对激素抵抗型难治性哮喘小鼠癌蛋白Fos(c-Fos)及血清核转录因子激活蛋白-1(activator protein 1,AP-1)表达的影响,试分析苏葶平喘汤对难治性哮喘的干预机制。方法将50只雌性SPF级BALB/c小鼠随机分为5组,分别为空白组...目的探讨苏葶平喘汤对激素抵抗型难治性哮喘小鼠癌蛋白Fos(c-Fos)及血清核转录因子激活蛋白-1(activator protein 1,AP-1)表达的影响,试分析苏葶平喘汤对难治性哮喘的干预机制。方法将50只雌性SPF级BALB/c小鼠随机分为5组,分别为空白组(A)、模型组(B)、苏葶平喘汤组(C)、地塞米松组(D)和苏葶平喘汤+地塞米松组(E),每组10只。除空白组外,剩余4组均将小鼠建立为激素抵抗型哮喘模型。药物干预结束后进行取材,利用酶联免疫吸附测定(ELISA)法、实时荧光定量聚合酶链式反应(Real-time PCR)分别检测小鼠血清AP-1、肺组织c-Fos的表达水平。结果1.ELISA检测结果显示:模型组小鼠较空白组小鼠血清中AP-1的值明显增高(P<0.05),苏葶平喘汤组、地塞米松组及苏葶平喘汤+地塞米松组较空白组的小鼠血清AP-1值均降低(P<0.05),其中以苏葶平喘汤+地塞米松组的降低最为显著(P<0.05)。2.PCR检测结果显示:模型组与其余各组相比小鼠肺组织的c-FosmRNA表达明显升高(P<0.05),苏葶平喘汤组、地塞米松组和苏葶平喘汤+地塞米松组c-FosmRNA表达下降(P<0.05),地塞米松组、苏葶平喘汤组和苏葶平喘汤+地塞米松组小鼠的肺组织c-FosmRNA表达水平则无明显差异。结论苏葶平喘汤治疗激素抵抗型哮喘可通过影响AP-1及c-Fos的表达水平来实现抑制哮喘炎症反应控制激素抵抗型哮喘症状的作用。展开更多
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.
文摘目的探讨苏葶平喘汤对激素抵抗型难治性哮喘小鼠癌蛋白Fos(c-Fos)及血清核转录因子激活蛋白-1(activator protein 1,AP-1)表达的影响,试分析苏葶平喘汤对难治性哮喘的干预机制。方法将50只雌性SPF级BALB/c小鼠随机分为5组,分别为空白组(A)、模型组(B)、苏葶平喘汤组(C)、地塞米松组(D)和苏葶平喘汤+地塞米松组(E),每组10只。除空白组外,剩余4组均将小鼠建立为激素抵抗型哮喘模型。药物干预结束后进行取材,利用酶联免疫吸附测定(ELISA)法、实时荧光定量聚合酶链式反应(Real-time PCR)分别检测小鼠血清AP-1、肺组织c-Fos的表达水平。结果1.ELISA检测结果显示:模型组小鼠较空白组小鼠血清中AP-1的值明显增高(P<0.05),苏葶平喘汤组、地塞米松组及苏葶平喘汤+地塞米松组较空白组的小鼠血清AP-1值均降低(P<0.05),其中以苏葶平喘汤+地塞米松组的降低最为显著(P<0.05)。2.PCR检测结果显示:模型组与其余各组相比小鼠肺组织的c-FosmRNA表达明显升高(P<0.05),苏葶平喘汤组、地塞米松组和苏葶平喘汤+地塞米松组c-FosmRNA表达下降(P<0.05),地塞米松组、苏葶平喘汤组和苏葶平喘汤+地塞米松组小鼠的肺组织c-FosmRNA表达水平则无明显差异。结论苏葶平喘汤治疗激素抵抗型哮喘可通过影响AP-1及c-Fos的表达水平来实现抑制哮喘炎症反应控制激素抵抗型哮喘症状的作用。
