GEO DataSets

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

Organism:

Bacillus cereus ATCC 10987; Bacillus cereus ATCC 14579; Bacillus cereus

Type:

Expression profiling by array

Platforms:

GPL7681 GPL7680

48 Samples

Download data

(Submitter supplied) The food-borne human pathogen Bacillus cereus is found in environments that often have a low pH, such as food and soil. The physiological response upon exposure to several levels of acidity were investigated of B. cereus model strain ATCC 10987, to elucidate the response of B. cereus to acid stress. pH 5.4, pH 5.0, pH 4.8 and pH 4.5 were selected to conduct microarray analyses, based on the differences in physiological response upon exposure to the acid conditions. more...

Organism:

Bacillus cereus; Bacillus cereus ATCC 10987

Type:

Expression profiling by array

Platform:

GPL7681

24 Samples

Download data

(Submitter supplied) The food-borne human pathogen Bacillus cereus is found in environments that often have a low pH, such as food and soil. The physiological response upon exposure to several levels of acidity were investigated of B. cereus model strain ATCC 14579, to elucidate the response of B. cereus to acid stress. pH 5.4, pH 5.0, pH 4.8 and pH 4.5 were selected to conduct microarray analyses, based on the differences in physiological response upon exposure to the acid conditions. more...

Organism:

Bacillus cereus; Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL7680

24 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) 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) The alkaliphilic halotolerant bacterium Bacillus sp. N16-5 often faces salt stress in its natural habitats. One-color microarrays was used to investigate transcriptome expression profiles of Bacillus sp. N16-5 adaptation reactions to prolonged grown at different salinities (0%, 2%, 8% and 15% NaCl) and the initial reaction to suddenly alter salinity from 0% to 8% NaCl.

Organism:

Bacillus sp. N16-5

Type:

Expression profiling by array

Platform:

GPL15620

27 Samples

Download data: TXT

(Submitter supplied) Expression profiling of a total of 7281 transcripts was compared between control and salt shock conditions.

Organism:

Mesorhizobium japonicum MAFF 303099

Type:

Expression profiling by array

Platform:

GPL16511

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

(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) A common bacterial strategy for monitoring environmental challenges is to use two-component systems, which consist of a sensor histidine kinase (HK) and a response regulator (RR). In the food-borne pathogen Bacillus cereus, the alternative sigma factor σB is activated by the RR RsbY. Here we present strong indications that the PP2C-type phosphatase RsbY receives its input from the multi-sensor hybrid kinase BC1008 (renamed RsbK). more...

Organism:

Bacillus cereus ATCC 14579

Type:

Expression profiling by array

Platform:

GPL8114

4 Samples

Download data

(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) This set of microarray data was used to investigate the effects of D. vulgaris adaptation to excess NaCl. Keywords: stress response, one time point (the mid-log phase for both control and treated cells)

Organism:

Nitratidesulfovibrio vulgaris str. Hildenborough

Type:

Expression profiling by array

Platform:

GPL5214

1 Sample

Download data: TXT

(Submitter supplied) Engineered abiotic stress resistance is an important target for increasing agricultural productivity.There are concerns, however, regarding possible ecological impacts of transgenic crops. In contrast to the first wave of transgenic crops, many abiotic stress resistance genes can initiate complex downstream changes. Transcriptome profiling has been suggested as a comprehensive non-targeted approach to examine secondary effects. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

24 Samples

Download data: CEL

(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) Whole-genome microarray technology and state-of-the-art proteomic techniques were applied to provide a global and time-resolved picture of the physiological response of B. subtilis cells exposed to a severe and sudden osmotic up-shift. This combined experimental approach provided quantitative data for 3961 mRNA profiles, 590 expression profiles of proteins detected in the cytosol and 383 expression profiles of proteins detected in the membrane fraction. more...

Organism:

Bacillus subtilis

Type:

Expression profiling by array

Platform:

GPL3502

15 Samples

Download data: CSV