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Genomic comparisons of Salmonella enterica serovar Enteritidis isolates

ABSTRACT: Comparative genomic hybridization of a temporally and locally diverse set of S. enterica ssp I serovar Enteritidis isolates, and some closely related serovar Dublin and Gallinarum strains, to the sequenced Enteritidis PT4 Keywords: other

ORGANISM(S): Salmonella Salmonella enterica subsp. enterica Salmonella enterica

PROVIDER: GSE2242 | GEO | 2005/08/06

SECONDARY ACCESSION(S): PRJNA91509

REPOSITORIES: GEO

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Genomic comparisons of Salmonella enterica serovar Enteritidis isolates

Project description:Comparative genomic hybridization of a temporally and locally diverse set of S. enterica ssp I serovar Enteritidis isolates, and some closely related serovar Dublin and Gallinarum strains, to the sequenced Enteritidis PT4

2005-08-06 | E-GEOD-2242 | biostudies-arrayexpress

Genomic comparisons of Salmonella enterica serovar Paratyphi A isolates

Project description:Comparative genomic analysis of a temporally and locally diverse set of S. enterica ssp I sv Paratyphi A isolates Keywords: ordered

2004-07-21 | GSE1500 | GEO

Novel insights into the oxidative stress response of Salmonella enterica serovar Enteritidis revealed by the next generation sequencing approach

Project description:We report our results of RNA-seq analysis on the wild type Salmonella enterica serovar Enteritidis with and without H2O2 treatment

2020-07-31 | GSE155479 | GEO

Transcription profiling of wild type, waaG mutant and rfaH mutant Salmonella enterica serovar Enteritidis PT4 and serovar Typhimurium to investigate live-attenuated vacine candidates

Project description:Effect of mutation of rfaH on gene expression in Salmonella enterica serovar Enteritidis PT4 and Salmonella enterica serovar Typhimurium 4/74

2006-11-13 | E-MEXP-844 | biostudies-arrayexpress

Genomic comparisons of Salmonella enterica serovar Paratyphi A isolates

Project description:Comparative genomic analysis of a temporally and locally diverse set of S. enterica ssp I sv Paratyphi A isolates Keywords: ordered

2004-07-21 | E-GEOD-1500 | biostudies-arrayexpress

Global gene expression analysis of Salmonella enterica serovar Enteritidis during growth in whole egg

Project description:Even though the incidence of salmonellosis in humans has decreased over the last years, Salmonella spp. are still a leading cause of foodborne outbreaks in Europe (Anon., 2014). Of more than 2500 different serovars of Salmonella enterica, S. enterica serovar Enteritidis (S. Enteritidis) is the most frequently reported serovar in relation to food borne disease, and egg and egg products are the most important vehicles (Anon., 2014). It has recently been shown that S. Enteritidis is superior to other serovars tested regarding survival in egg white, which may explain why many egg borne outbreaks are caused by this serovar (De Vylder et al., 2013). The genetic background for this apparent better adaptation to survival in egg is only partially known. The aim of this work was to carry out gene expression analysis in order to understand how S. Enteritidis adapts to growth in the hostile environment of egg. This study analyzed gene expression of this bacterium during growth in whole egg, and whether highly expressed genes were essential for the growth. High quality RNA was extracted from S. Enteritidis using an improved modified RNA-extraction protocol. Global gene expression during growth in whole egg was compared to growth in LB-medium using DNA array method. Twenty-six genes were significantly upregulated during growth in egg; these belonged to amino acids biosynthesis, di/oligopeptide transport system, biotin synthesis, ferrous iron transport system, and type III secretion system. Significant downregulation of 15 genes related to formate hydrogenlyase (FHL) and trehalose metabolism was observed. The results suggested that S. Enteritidis is starved for amino-acids, biotin and iron when growing in egg.

2016-03-04 | E-MTAB-4521 | biostudies-arrayexpress

Transcriptome of DTAC-resistant Salmonella Enteritidis

Project description:Screen for differences in gene expression between a parental Salmonella enterica serovar Enteritidis strain (ATCC4931) and an adapted strain with increased resistance to the widely used antimicrobial sanitizer dodecyltrimethylammonium chloride (DTAC)

2012-12-31 | GSE41606 | GEO

Gene expression response of Salmonella enterica serovar Enteritidis phage type 8 to subinhibitory concentrations of trans-cinnamaldehyde and eugenol

Project description:Transcriptional profiles of mid-exponentially growing Salmonella enterica sv Enteritidis PT8 cultures in response to exposure to trans-cinnamaldehyde (0.01%; 0.75mM) or eugenol (0.04%; 2.46mM)

2017-11-09 | GSE102477 | GEO

FabR ChIP-chip on Salmonella enterica subsp. enterica serovar Typhimurium SL1344

Project description:FabR ChIP-chip on Salmonella enterica subsp. enterica serovar Typhimurium SL1344 using anti-Myc antibody against strain with chromosomally 9Myc-tagged FabR (IP samples) and wildtype strain (mock IP samples)

2014-12-31 | GSE52877 | GEO

Comparative genomic hybridization of strains of Salmonella enterica serovar Enteritidis from Uruguay, other distant geographical regions and other serovars isolated in Uruguay

Project description:Microarray based CGH was conducted over a group of 29 strains of S. Enteritidis spanning different epidemiological periods in Uruguay, plus 6 other S. Enteritidis strains isolated from distant geographical regions. We also included 9 Salmonella enterica strains of other serovars isolated in Uruguay. A S. Enteritidis dispensable genome of 233 chromosomal genes and high extent of variation in virulence plasmid was found. Strains isolated before the epidemic show the highest genomic differences as compared with the PT4 reference strain. Comparison with the gene content of other serovars demonstrate extensive horizontal gene transfer between circulating strains beyond serovar definition. Our results show that the epidemic of S Enteritidis in Uruguay was produced by the introduction of strains closely related to PT4, and corroborate the extensive genetic homogeneity among S. Enteritidis isolates worldwide. Phage SE14 emerges as the only specific region for S. Enteritidis. Genetic differences detected in pre-epidemic strains, mainly associated with the absence of phage SE20, suggest that genetic features encoded in this phage may be related to particular epidemiological behavior.

2009-03-03 | E-TABM-603 | biostudies-arrayexpress

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