Project description:In order to analyze the transcriptome of ginseng root during leaf-expansion period and discover the genes during development, a cDNA sample was prepared from the leaf-expansion period of ginseng root and sequenced using the Illumina sequencing platform.The transcriptomic sequencing technology was set up the first time for five years the transcription of the ginseng root in the leaf-expansion period.
2013-06-15 | E-MTAB-974 | biostudies-arrayexpress
Project description:Ginseng rhizosphere microbial research
| PRJNA1191793 | ENA
Project description:Ginseng rhizosphere microbial research
| PRJNA1191688 | ENA
Project description:Ginseng rhizosphere microbial research
Project description:Panax ginseng C.A. Meyer is one of the most popular medicinal herbs. In order to research the genes that related to the flowering period of ginseng, and find out the antifungal proteins and transcription factors that combat various biotic and abiotic stress, a cDNA sample was prepared from the flowering period ginseng root of a five-year-old plant and sequenced using the Illumina sequencing platform. In this study, we produced nearly 40 million sequencing reads. These reads were assembled into 134,045 contigs using Trinity software (mean size: 282 bp). Based on a similarity search with known proteins, we identified 79,307 sequences with a cut-off E-value of 10-5. Assembled sequences were then annotated using gene ontology (GO) terms, clusters of orthologous group (COG) classifications and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways respectively.
Project description:Neuroaging is one of the most distinct signs of aging, which promotes mild cognitive impairment (MCI) and various neurodegenerative diseases. Previous studies have indicated that Panax ginseng C. A. Mey. (ginseng) root polysaccharides have positive effects against senescence and nerve damage. However, its structure and role in delaying senescence-associated neuroaging have not been comprehensively studied. Therefore, this research characterized the structural features of a ginseng root polysaccharide (GRP-E1F2) and the potential mechanism underlying its anti-neurodegeneration effect against senescence-related function and pathological damage. GRP-E1F2 is a neutral polysaccharide with 11.688 kDa molecular weight, which was isolated from the ginseng roots. In this study, NMR, HPLC, FT-IR, and methylation analyses were performed to identify the physiochemical characteristics of GRP-E1F2, which provided its repetitive unit structures. The in vivo experiments revealed that GRP-E1F2 prolonged the lifespan and mitigated senescence-related symptoms including aggregation of lipofuscin and ROS, as well as the antioxidant enzyme inactivation in aging animals (C. elegans and mice). Furthermore, tert-butyl hydroperoxide (tBHP) induced senescent cells indicated that GRP-E1F2 treated has beneficial anti-aging effects. Moreover, the transgenic C. elegans expressing GFP in D-type gamma-aminobutyric acid (GABA)-positive neurons and mice indicated that GRP-E1F2 reduced neuronal morphological abnormalities and reversed aging-induced cognitive deficits, indicating the anti-neuroaging effects of GRP-E1F2. Mechanistically, GRP-E1F2 downregulates cellular senescence in aging brains and cell models, which was indicated by senescence-associated β-galactosidase (SA-β-gal) activity, marker protein p53, p21, phospho-histone H2A.X, and senescence-associated secretory phenotype (SASP). In addition, RNA-seq, RT-qPCR, and immunofluorescence assays revealed that GRP-E1F2 down-regulated mRNA and protein levels of prodynorphin (Pdyn) in aging models. Moreover, the p53 activator and overexpression vectors of Pdyn were employed to determine the pharmacological mechanism of GRP-E1F2 in reducing Pdyn expressions to delay neuroaging by inhibiting the cellular senescence signaling pathway. This research provides theoretical support and experimental evidence for the clinical application of ginseng root polysaccharides against senescence-associated neuroaging, promoting the modern development of traditional medicines from natural polysaccharides.
Project description:In order to research the ginseng leaf-stem gene expression profiles of and dig out its function genes in the leaf-expansion period, the transcriptomic sequencing technology was set up the first time for five years the transcription of the Panax ginseng leaf-stem in the leaf-expansion period.
Project description:Consuming raw ginseng is a common practice, which allows for the intake of not only saponins but also a variety of other bioactive compounds. This suggests that biologically derived ginseng could serve as a promising avenue for developing novel ginseng-based materials. However, research on the development and efficacy of these biological materials remains limited.
Project description:Korean ginseng (Panax ginseng Meyer) has long been cultivated as an important medicinal plant. Drought results from the moderate water loss, which primarily impairs the growth of ginseng and reduction of yield loss. However, basis of biological clues to understanding the accurate mechanisms related to drought stress in proteome level are still elusive. Therefore, we carried out label-free quantitative proteomic analysis using ginseng roots subjected to drought stress which was grown at less than 10% soil moisture for two weeks, compared with normal ginseng which was grown at 25% soil moisture. The acquired proteins were carried out label-free proteomic analysis using LC-MS/MS. This approach led to the identification of total 2,471 proteins, and out of 195 proteins showed significant modulation. Functional classification revealed that proteins related to secondary metabolites, calcium signaling, and photosynthesis were enriched in control sample (cluster_1), while proteins associated with stress responsive, redox, electron transport, and protein synthesis were mainly dominated in cluster_2 (drought stress condition). Taken together, our results provided an overview of the drought-induced proteomic changes in ginseng root, and it is correlated with physiological changes, contributing to reveal potential marker at proteome level in ginseng.