The objective of this work was to carry out a morphological characterization of arbuscular mycorrhizal fungi in the rhizosphere of Xanthosoma sagittifolium L. Schott plants. The plant material used was the white and r...The objective of this work was to carry out a morphological characterization of arbuscular mycorrhizal fungi in the rhizosphere of Xanthosoma sagittifolium L. Schott plants. The plant material used was the white and red cultivars of X. sagittifolium, belonging to age intervals of 3 - 6, 6 - 9, and 9 - 12 months. Three harvest sites were chosen in the Central Region of Cameroon. In each site, soil from the rhizosphere and plant roots was collected in a randomized manner. In the field, the agronomic parameters were evaluated. The physicochemical characteristics of the soils, the mycorrhization index, and the morphological characterization of the mycorrhizal types of each site were carried out. The results obtained show that the agronomic growth parameters varied significantly using the Student Newman and Keuls Test depending on the harvest sites. The soils’ pH in all sites was acidic and ranged between 4.6 and 5.8. The Nkometou site has a loamy texture while the Olembe and Soa sites have loam-clay-sandy and loam-clay textures respectively. The highest mycorrhization frequencies appeared at the Nkometou site, with 75 and 87.33% of the white and red cultivars plant roots at 6 - 9 and 3 - 6 months. The relative abundance of AMF arbuscular mycorrhizal fungal spores in the rhizosphere of X. sagittifolium plants varied with age and cultivar. There were 673 spores between 9 - 12 months in Nkometou in the red cultivar. Six AMF genera were identified in all the different soils collected: Acaulospora sp., Funneliformis sp., Gigaspora sp., Glomus sp., Scutellospora sp., and Septoglomus sp. The genus Glomus sp. was the most present at all age intervals in both cultivars.展开更多
目的基于网络药理学分析石菖蒲主要成分治疗神经退行性疾病(neurodegenerative diseases,ND)的作用靶点和机制。方法利用TCMSP(traditional Chinese medicine systems pharmacology database and analysis platform)数据库检索和既往文...目的基于网络药理学分析石菖蒲主要成分治疗神经退行性疾病(neurodegenerative diseases,ND)的作用靶点和机制。方法利用TCMSP(traditional Chinese medicine systems pharmacology database and analysis platform)数据库检索和既往文献证明得到石菖蒲的主要有效成分。在GeneCards,OMIM(Online Mendelian Inheritance in Man),TTD(Therapeutic Target Database)数据库检索ND的相关靶点,并用Uniprot数据库进行标准化。构建ND和石菖蒲有效成分的共有靶点韦恩图和PPI网络图,进行GO(Gene ontology)注释和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)通路富集分析,展示石菖蒲有效成分在治疗ND过程中疾病-靶点的关系。结果石菖蒲和ND的共有靶点总计为41个,关键靶点主要有FOS、ACHE、SLC6A4、ADRA1B、ADRA2A、MAOB、PTGS2、ADRA1A等。这些靶点涉及G蛋白偶联的胺受体活性、肾上腺素受体活性、儿茶酚胺结合、类固醇激素受体活性、神经递质受体活性、突触后神经递质受体活性等与突触间神经递质及其受体密切相关的生物过程、钙信号通路、cGMP-PKG信号通路和唾液分泌通路等信号通路。结论石菖蒲的主要有效成分可能通过对FOS、ACHE、SLC6A4、ADRA1B、MAOB等蛋白及相关通路的影响进而对神经神经递质受体或突触的损伤修复发挥治疗ND的作用,这为石菖蒲有效成分治疗ND的作用机制提供了新方向。展开更多
文摘The objective of this work was to carry out a morphological characterization of arbuscular mycorrhizal fungi in the rhizosphere of Xanthosoma sagittifolium L. Schott plants. The plant material used was the white and red cultivars of X. sagittifolium, belonging to age intervals of 3 - 6, 6 - 9, and 9 - 12 months. Three harvest sites were chosen in the Central Region of Cameroon. In each site, soil from the rhizosphere and plant roots was collected in a randomized manner. In the field, the agronomic parameters were evaluated. The physicochemical characteristics of the soils, the mycorrhization index, and the morphological characterization of the mycorrhizal types of each site were carried out. The results obtained show that the agronomic growth parameters varied significantly using the Student Newman and Keuls Test depending on the harvest sites. The soils’ pH in all sites was acidic and ranged between 4.6 and 5.8. The Nkometou site has a loamy texture while the Olembe and Soa sites have loam-clay-sandy and loam-clay textures respectively. The highest mycorrhization frequencies appeared at the Nkometou site, with 75 and 87.33% of the white and red cultivars plant roots at 6 - 9 and 3 - 6 months. The relative abundance of AMF arbuscular mycorrhizal fungal spores in the rhizosphere of X. sagittifolium plants varied with age and cultivar. There were 673 spores between 9 - 12 months in Nkometou in the red cultivar. Six AMF genera were identified in all the different soils collected: Acaulospora sp., Funneliformis sp., Gigaspora sp., Glomus sp., Scutellospora sp., and Septoglomus sp. The genus Glomus sp. was the most present at all age intervals in both cultivars.
文摘目的基于网络药理学分析石菖蒲主要成分治疗神经退行性疾病(neurodegenerative diseases,ND)的作用靶点和机制。方法利用TCMSP(traditional Chinese medicine systems pharmacology database and analysis platform)数据库检索和既往文献证明得到石菖蒲的主要有效成分。在GeneCards,OMIM(Online Mendelian Inheritance in Man),TTD(Therapeutic Target Database)数据库检索ND的相关靶点,并用Uniprot数据库进行标准化。构建ND和石菖蒲有效成分的共有靶点韦恩图和PPI网络图,进行GO(Gene ontology)注释和京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)通路富集分析,展示石菖蒲有效成分在治疗ND过程中疾病-靶点的关系。结果石菖蒲和ND的共有靶点总计为41个,关键靶点主要有FOS、ACHE、SLC6A4、ADRA1B、ADRA2A、MAOB、PTGS2、ADRA1A等。这些靶点涉及G蛋白偶联的胺受体活性、肾上腺素受体活性、儿茶酚胺结合、类固醇激素受体活性、神经递质受体活性、突触后神经递质受体活性等与突触间神经递质及其受体密切相关的生物过程、钙信号通路、cGMP-PKG信号通路和唾液分泌通路等信号通路。结论石菖蒲的主要有效成分可能通过对FOS、ACHE、SLC6A4、ADRA1B、MAOB等蛋白及相关通路的影响进而对神经神经递质受体或突触的损伤修复发挥治疗ND的作用,这为石菖蒲有效成分治疗ND的作用机制提供了新方向。
