Bacillus subtilis
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ABSTRACT:
PROVIDER: PRJNA480558 | ENA |
REPOSITORIES: ENA
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Project description:Soybeans fermented by Bacillus subtilis BJ3-2 exhibits strong ammonia taste in medium temperature below 37℃ and prominent soy sauce-like aroma moderate temperatures above 45℃. The transcriptome sequencing of Bacillus subtilis BJ3-2 (incubating at 37°C and 45°C) has been completed, screening of differentially expressed genes (DEGs) through data analysis, and analyzing their metabolic pathways, laying a foundation for exploring the regulatory mechanism of soy sauce-like aroma formation.
2021-12-31 | GSE166082 | GEO
Project description:In this study two genome-reduced Bacillus subtilis strains lacking about 36% of dispensable genetic information were constructed using a markerless and scarless deletion method. In order to analyze the consequences of the deletions for the bacteria, a multi-omics characterization of the reference strain Δ6 (Westers et al., 2003; PMID 12949151) and the two deletion strains was carried out. Bacteria were cultivated in complex medium supplemented with glucose, and samples of the same cultures were subjected to metabolome, proteome, and transcriptome analyses.These revealed a massive re-organization of metabolism as well as substantial changes in the transcriptome and the proteome.
2016-11-30 | GSE82249 | GEO
Project description:Identification of the specific WalR (YycF) binding regions on the B. subtilis chromosome during exponential and phosphate starvation growth phases. The data serves to extend the WalRK regulon in Bacillus subtilis and its role in cell wall metabolism, as well as implying a role in several other cellular processes.
2015-01-26 | GSE65272 | GEO
Project description:The bacterial cell wall has been a celebrated target for antibiotics and holds real promise as a target for the discovery of new chemical matter to surmount pervasive multi-drug resistance among pathogenic bacteria. While the walls of Gram-negative bacteria are composed primarily of peptidoglycan, those of Gram-positives are more substantial and contain, in addition, large amounts of the polymer teichoic acid, covalently attached to peptidoglycan. Wall teichoic acids are a diverse group of phosphate-rich, extracellular polysaccharides that have been largely regarded as ancillary cell surface components. Recently, wall teichoic acid was shown to be essential to the proper rod-shaped cell morphology of the prototype Gram-positive bacterium Bacillus subtilis and an important virulence factor for the human pathogen Staphylococcus aureus. Thus wall teichoic acid synthesis is an intriguing target for the development of new cell wall-active antibiotics. Nevertheless, recent studies have shown that the dispensability of genes encoding teichoic acid biosynthetic enzymes in both B. subtilis and S. aureus is paradoxical and complex. Here, we report here on the discovery of a promoter (PywaC), which is sensitive to lesions in teichoic acid synthesis. Using this promoter we developed a luminescent, cell-based, reporter system to take a chemical-genetic approach to understanding the complexity of wall teichoic acid biogenesis using a large collection of antibiotics of well characterized biological activity. Our results reveal surprising interactions among undecaprenol, peptidoglycan and teichoic acid biosynthesis that help explain the complexity of teichoic acid gene dispensability. Furthermore, the new reporter assay represents an exciting avenue for the discovery of novel antibacterial molecules that impinge broadly on Gram-positive bacterial cell wall biogenesis. Keywords: comparison between depleted and repleted tagD mutant
2008-03-01 | GSE7373 | GEO
Project description:Brassinosteroids (BRs) are a group of plant steroid hormones that play crucial roles various of growth and developmental processes. Biological function and signal transduction pathway of BR has been well characterized in model plants like Arabidopsis and rice. However, their biological roles are still unclear in tree species, especially in an important non-timber plant moso bamboo, which has great ecological and economic value and distinguish fast-growth feature. Here we reported that reduce endogenous brassinosteroid by biosynthesis inhibitor propiconazole reduced both root and shoot growth in seedling stage. Exogenous BR application promoted shoot bract elongation and inclination of lamina joint and bract. Genome-wide transcriptome analysis were performed to identify hundreds of differential expressed genes by BR and propiconazole treatment in shoot and root parts of bamboo seedling, respectively. GO analysis revealed that BR regulates cell wall related genes, hydrogen peroxide catabolic genes and auxin related genes to promote bamboo root development and elongation. Our study identified BR response genes and provides a comprehensive resource for molecular mechanism research of bamboo growth.
2018-12-11 | GSE123529 | GEO
Project description:This series of experiments was designed to identify the program of gene transcription for a single differentiating cell type during sporulation in Bacillus subtilis. The mother cell is one of two cell types generated by asymmetric division of sporulating cells approximately two hours after initiation of sporulation. The program is governed by a hierarchical cascade consisting of the transcription factors: sigmaE, sigmaK, GerE, GerR (YlbO) and SpoIIID. The characterization of the sigmaE regulon was reported in Eichenberger et al. (2003), J. Mol. Biol. 327, 945-972. Here we report the data for sigmaK, GerE, GerR and SpoIIID.
2004-09-01 | GSE1620 | GEO
Project description:This series of experiments was designed to identify the program of gene transcription for a single differentiating cell type during sporulation in Bacillus subtilis. The mother cell is one of two cell types generated by asymmetric division of sporulating cells approximately two hours after initiation of sporulation. The program is governed by a hierarchical cascade consisting of the transcription factors: sigmaE, sigmaK, GerE, GerR (YlbO) and SpoIIID. The characterization of the sigmaE regulon was reported in Eichenberger et al. (2003), J. Mol. Biol. 327, 945-972. Here we report the data for sigmaK, GerE, GerR and SpoIIID.
2010-06-06 | E-GEOD-1620 | biostudies-arrayexpress
Project description:Antibiotics have dose-dependent effects on exposed bacteria. The medicinal use of antibiotics relies on their growth-inhibitory activities at sufficient concentrations. At subinhibitory concentrations, exposure effects vary widely among different antibiotics and bacteria. Bacillus subtilis responds to bacteriostatic translation inhibitors by mobilizing a population of cells (MOB-Mobilized Bacillus) to spread across a surface. How B. subtilis regulates the antibiotic-induced mobilization is not known. In this study, we used chloramphenicol to identify regulatory functions that B. subtilis requires to coordinate cell mobilization following subinhibitory exposure. We measured changes in gene expression and metabolism and mapped the results to a network of regulatory proteins that direct the mobile response. Our data reveal that several transcriptional regulators coordinately control the reprogramming of metabolism to support mobilization. The network regulates changes in glycolysis, nucleotide metabolism, and amino acid metabolism that are signature features of the mobilized population. Among the hundreds of genes with changing expression, we identified two, pdhA and pucA, where the magnitudes of their changes in expression, and in the abundance of associated metabolites, reveal hallmark metabolic features of the mobilized population. Using reporters of pdhA and pucA expression, we visualized the separation of major branches of metabolism in different regions of the mobilized population. Our results reveal a regulated response to chloramphenicol exposure that enables a population of bacteria in different metabolic states to mount a coordinated mobile response.
2024-03-20 | GSE261934 | GEO
Project description:The Rok protein of Bacillus subtilis was identified as a negative regulator of competence development. Here we show that Rok binds to extended areas of the B. subtilis genome that are characterized by a high A+T content and are known or believed to have been acquired by horizontal gene transfer, e.g. mobile elements. A deletion of rok results in higher excision of one such element, ICEBs1. The preferential association of Rok with DNA with a high A+T content is also observed in a Gram-negative host, E. coli, and depends on a conserved C-terminal region of the protein. Based on our findings, we propose that Rok is a nucleoid-associated protein that fulfills a function analogous to H-NS, a protein absent from most Gram-positive bacteria.
2011-01-01 | GSE23199 | GEO
Project description:Characterization of the putative genetic determinants of the VBNC state in a known spore-forming Gram-positive organism Bacillus subtilis 168. The VBNC state was induced under osmotic stress and aminoglycoside treatment. The transcriptome landscape of VBNC cells was compared to the viable, antibiotic sensitive B. subtilis cells and to the viable cells with no antibiotic treatment.
2022-07-02 | GSE207180 | GEO