Project description:Purpose: The goal of this study are to reveal the internal mechanism of Bacillus cereus G2 increased Glycyrrhiza uralensis Fisch. seedlings salt-tolerance by RNA-Seq. Methods: mRNA profiles of Glycyrrhiza uralensis Fisch. Seedling in four treatment: control treatment, G2 treatment, salt treatment, salt and G2 treatment. Results: We mapped about 3 million sequence reads per sample to the G. uralensis transcriptome. A total of 35,831 genes in all samples of G. uralensis were identified and quantified by transcriptions, among which 3608 DEGs were identified. There are 1589, 623, 469 and 927 DEGs in S vs CK, CK+B vs CK, S+B vs S and S+B vs CK+B comparisons, respectively. Validation of expression levels for 12 randomly selected DEG candidates was carried out by quantitative real-time PCR (qRT-PCR). The results showed high congruence between RNA-Seq and qRT-PCR results (coefficient of determination R2 =0.9088) indicating the reliability of RNA-Seq quantification of gene expression. Conclusions: Our study help to better understand the underlying molecular mechanisms of G2 improve the salt tolerance of G. uralensis.
Project description:Purpose: The goal of this study are to reveal the internal mechanism of Bacillus pumilus G5 and silicon increased Glycyrrhiza uralensis Fisch. seedlings drought-tolerance by RNA-Seq. Methods: mRNA profiles of Glycyrrhiza uralensis Fisch. Seedling in five treatment: control treatment, drought stress treatment, drought stress with G5 treatment, drought stress with Si treatment and drought stress with G5 combined Si treatment. Results: The full-length transcriptome sequencing of 15 samples was completed, and the clean data of each sample was 6.28GB. All the consistent transcript sequences were aligned to the reference genome by minimap2 software and then de-redundant analysis was performed. Finally, 37267 genes were obtained. A total of 6934 DEGs were identified in four comparisons (D vs CK, DB vs D, DSi vs D, and DBSi vs D), among which are 967, 1559, 1278 and 3130 DEGs in four comparisons, respectively. Conclusions: Our study help to better understand the underlying molecular mechanisms of Bacillus pumilus G5 and silicon improve the drought-tolerance of G. uralensis.
Project description:Purpose: The goal of this study are to reveal the internal mechanism of silicon increased Glycyrrhiza uralensis Fisch. seedlings drought-tolerance,salt-tolerance and salt-drought tolerance by RNA-Seq. Methods: mRNA profiles of Glycyrrhiza uralensis Fisch. Seedling in eight treatment: control treatment with or without silicon,salt treatment with or without silicon,drought treatment with or without silicon,salt-drought treatment with or without silicon. Each treatment group sequenced the aerial (stems, leaves, buds and all the above ground parts) and underground parts (roots and all the underground parts) respectively Results:A total of 48 samples were sequenced and 372.37GB of clean data was acquired. The clean data of every sample reached 5.96GB, and the percentage of Q30 base was 94.63% or above. Clean reads of each sample were sequentially aligned with the specified reference genome, and alignment efficiency ranged from 85.27% to 92.66%. Therefore, the transcriptome data of samples were obtained with a high correct rate and good genomic coverage.Results of sequencing analysis showed that compared with CK group, there were 1426 DEGs (771 up-regulated and 655 down-regulated), 1386 DEGs (571 up-regulated and 815 down-regulated) and 4192 DEGs (1668 up-regulated and 2524 down-regulated) in aerial part, and 1462 DEGs (730 up-regulated and 732 down-regulated), 2212 DEGs (939 up-regulated and 1273 down-regulated) and 3735 DEGs (1768 up-regulated and 1986 down-regulated) in underground part of D, S and SD group respectively. Conclusions: Our study help to better understand the underlying molecular mechanisms of silicon improve the drought-tolerance,salt-tolerance and salt-drought tolerance of G. uralensis.
Project description:Licorice (Glycyrrhiza uralensis Fisch) flavonoids have many pharmacological effects, as the main chemical component of licorice, its content directly affects the quality of licorice. Methyl jasmine (MeJA) is an important signaling molecule in the secondary metabolic pathway of plants, but the biological mechanisms that stimulating the production of licorice flavonoids and the related changes in transcriptome are still less studied. In this research, the expression of two key enzyme genes: Chalcone synthase (CHS) and Cinnamate 4-hydroxylase (C4H) in the biosynthesis pathway of licorice flavonoids was determined, and it was significantly different after 9 hours of MeJA induction. The transcriptome profiles of licorice cells at 9 hours after MeJA treatment were analyzed to investigate the transcriptional alterations of licorice cell in response to MeJA elicitation by “RNA-seq”. 151, 529 transcripts (200 bp in length) of cDNA from the samples were generated, and 116, 907 unigenes were found. MeJA appeared to stimulate a large number of genes involved in several relevant functional categories, such as carbohydrate metabolism and encoding transcription factors, 11 MYB transcription factors expressed significant differences were screened. This comprehensive description of gene expression information could help elucidate the molecular mechanism of MeJA-mediated biosynthesis of licorice flavonoids and MeJA-regulated network formation.