GEO DataSets

(Submitter supplied) Comparison of chitosan-treated B. cereus ATCC 14579 cells with non-treated B. cereus ATCC 14579 cells. 2 chitosans with similar molecular weight (Mw) but different degrees of acetylation (Fa) were used: chitosan B (Mw: 28.4 kDa, Fa: 0.16) (samples 1-3) and chitosan A (Mw: 36.0 kDa, Fa: 0.01) (samples 4-6).

Organism:

Bacillus cereus ATCC 14579; Bacillus cereus

Type:

Expression profiling by array

Platform:

GPL13146

6 Samples

Download data: TXT

(Submitter supplied) In Bacillus cereus the catabolite control protein CcpA was shown to be involved in optimizing the efficiency of glucose catabolism by activating genes encoding glycolytic enzymes including a non-phosphorylating glyceraldehyde-3-phosphate dehydrogenase that mediates conversion of D-glyceraldehyde 3-phosphate to 3-phospho-D-glycerate in one single step, and by repressing genes encoding the citric acid cycle and gluconeogenic enzymes. more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL5161

8 Samples

Download data: TXT

(Submitter supplied) RpoN was shown to have a pleiotropic role in different microorganisms. This study was performed to elucidate role in B. cereus. In this study we compared the transcriptomic profiles of the WT, rpoN mutant and the complemented strain in aerated and static growth conditions.

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL19768

24 Samples

Download data: TXT

(Submitter supplied) Bacteria are able to cope with the challenges of sudden increase of salinity by activating adaptation mechanisms. In this study, exponentially growing cells of the food-borne pathogen Bacillus cereus ATCC 14579 were exposed to both mild (2.5% NaCl w/v) and severe (5% NaCl w/v) salt stress conditions. B. cereus continued growth at a reduced rate when shifted to mild salt stress. Exposure to severe salt stress resulted in a lag period, and after 60 min cellular growth was resumed filamentously. more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platforms:

GPL7634 GPL7636

12 Samples

Download data

(Submitter supplied) We have employed a whole genome microarray for gene expression profilling to understand the global view of the cellular mechanism and metabolic response of B. cereus B3711 exposed to 1 mM silver nitrate. RNA was extracted from B. cereus grown under silver treated and untreated set of conditions in duplicates at two different time points (30 & 60 min). Comparing the transcript profile of the control and treated cells, several differentially expressed genes were identified. more...

Organism:

Bacillus cereus

Type:

Expression profiling by array

Platform:

GPL11312

8 Samples

Download data: TXT

(Submitter supplied) Antimicrobial chemicals are widely applied to clean and disinfect food-contacting surfaces. However, the cellular response of bacteria, such as Bacillus cereus, to various disinfectants is unclear. In this study, the physiological and genome-wide transcriptional responses of B. cereus ATCC 14579 exposed to four different disinfectants (i.e., benzalkonium chloride, sodium hypochlorite, hydrogen peroxide, and peracetic acid) were analyzed. more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL9493

40 Samples

Download data

(Submitter supplied) The alternative sigma factor sigmaB has an important role in the acquisition of stress-resistance in many gram-positive bacteria. In the foodborne pathogen Bacillus cereus sigmaB is activated strongly upon a heat shock and other stress conditions. Here we describe the identification of the set of sigmaB-regulated genes in B. cereus by DNA microarray analysis of the transcriptome upon a mild heat shock. more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL4406

7 Samples

Download data

(Submitter supplied) Abstract: Chemogenomic fitness assays were combined with a transcriptome analysis to understand both the mode of action and the mechanisms of resistance to Chitosan oligosaccharides (COS). COS are deacetylated chitin compounds, with antimicrobial properties, that are presumed to act by disrupting the cell membrane. The fitness assays identified 39 yeast deletion strains sensitive to COS and 21 suppressors of COS sensitivity. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL14716

36 Samples

Download data: XYS

(Submitter supplied) PlcR, the major virulence transcriptional regulator in the Bacillus cereus group belongs to the RNPP quorum sensor family and is activated through interaction with the secreted heptapeptide PapR7 used as a signalling molecule. We identified using modeling analysis a structural homologue of PlcR, PlcRa, in B. cereus. Whole-genome comparative microarrays identified 119 genes (threshold >3) differentially expressed at the onset of stationary phase in a plcRa mutant. more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL9493

8 Samples

Download data: TXT

(Submitter supplied) Aims: To investigate the inactivation kinetics of Bacillus cereus vegetative cells upon exposure to low-temperature nitrogen gas plasma and to reveal the mode of inactivation by transcriptome profiling. Methods and results: Exponentially growing B. cereus cells were filtered and put on agar plates. The plates, carrying the filters with the vegetative cells, were placed into nitrogen gas plasma at atmospheric pressure and cold temperature (~37°C). more...

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL9493

16 Samples

Download data: TXT

(Submitter supplied) Comparison of the B cereus codY deletion mutant with wild type strain (ATCC 14579)

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL13146

4 Samples

Download data: TXT

(Submitter supplied) Bacterial response to nitric oxide (NO) is of major importance for bacterial survival, as NO stress is a main actor of the eukaryote immune response. Several pathogenic bacteria have developed gene regulation systems involved in detoxification and in repairing the damages caused by NO. However, bacterial mechanisms of NO resistance are poorly described for Gram positive bacteria and especially Bacillus cereus. more...

Organism:

Bacillus cereus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL29834

21 Samples

Download data: CSV

(Submitter supplied) Acclimation to low CO2 conditions in cyanobacteria involves the coordinated regulation of genes mainly encoding components of the carbon concentration mechanism (CCM). Making use of several independent microarray datasets a core set of CO2-regulated genes was defined for the model strain Synechocystis sp. PCC 6803. On the transcriptional level, the CCM is mainly regulated by the well-characterized transcriptional regulators NdhR and CmpR, whereas the role of an additional regulatory protein, namely cyAbrB2 belonging to the widely distributed AbrB regulator family that was originally characterized in the genus Bacillus, is less defined. more...

Organism:

Synechocystis sp. PCC 6803

Type:

Expression profiling by array

Platform:

GPL15867

16 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL13146

9 Samples

Download data: TXT

(Submitter supplied) Comparison of the Bacillus cereus with overexpressed Bacillus subtilis ComK (Bacillus cereus pNWcomKBsu) vs Bacillus cereus carrying empty plasmid (Bacillus cereus pNW33N)

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL13146

3 Samples

Download data: TXT

(Submitter supplied) Comparison of the Bacillus cereus with induced ComK1 (pATK31 in sample 1-3) or ComK2 (pATK32 in sample 4-6) proteins vs Bacillus cereus carrying empty plasmid (pLM5 in all samples)

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL13146

6 Samples

Download data: TXT

(Submitter supplied) Comparative phenotype and transcriptome analyses were performed with Bacillus cereus ATCC 14579 exposed to acid down-shock to pH 5.5 set with different acidulants. When acidified with hydrochloric acid (HCl), growth was diminished, whereas 2 mM undissociated lactic acid (HL) or acetic acid (HAc) stopped growth without inactivation (bacteriostatic condition), and 15 mM undissociated HAc caused growth arrest and, finally, cell death, as reflected by a 3 to 4 log inactivation (bactericidal condition). more...

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL7679

24 Samples

Download data