Detailed Information on Publication Record
2002
Identification of Salmonella enterica serovar Typhimurium genes associated with growth suppression in stationary-phase nutrient broth cultures and in the chicken intestine
RYCHLÍK, Ivan, Martin GERALD, Ulrich METHNER, Margaret LOVELL, Lenka CRDOVÁ et. al.Basic information
Original name
Identification of Salmonella enterica serovar Typhimurium genes associated with growth suppression in stationary-phase nutrient broth cultures and in the chicken intestine
Authors
RYCHLÍK, Ivan (203 Czech Republic, guarantor), Martin GERALD (276 Germany), Ulrich METHNER (276 Germany), Margaret LOVELL (826 United Kingdom of Great Britain and Northern Ireland), Lenka CRDOVÁ (203 Czech Republic), Alena SBKOVÁ (203 Czech Republic), Mojmír SEVCIK (203 Czech Republic), Jiri DAMBORSKÝ (203 Czech Republic) and Paul BARROW (826 United Kingdom of Great Britain and Northern Ireland)
Edition
Archives of Microbiology, 2002, 0302-8933
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 1.903
RIV identification code
RIV/00216224:14310/02:00006912
Organization unit
Faculty of Science
UT WoS
000179674200005
Keywords in English
VIRULENCE; RESISTANCE; SALMONELLA; YHJH GENE; MUTANT
Tags
Změněno: 19/3/2010 10:54, prof. Mgr. Jiří Damborský, Dr.
Abstract
V originále
Over 2,800 Tn5 mutants of Salmonella enterica serovar Typhimurium have been screened for the loss of ability to suppress the multiplication of a spectinomycin-resistant but otherwise isogenic S. Typhimurium strain, when this was added to 24 hour LB broth cultures of the mutants. Selected growth non-suppressive (GNS) mutants were defective in respiration (insertions in arcA and fnr), amino acid biosynthesis (aroA and aroD), nutrient uptake and its regulation (tdcC and crp), and in chemotaxis (fliD). In the last GNS mutant, the transposon inactivated yhjH, an ORF with unknown function which shows homology to di-guanylate cyclase and novel two-component signal transduction proteins. In newly-hatched chickens, all the mutants, with the exception of the fliD mutant, were also unable to suppress colonisation of the alimentary tract by the parent strain inoculated one day later. Defined mutations in luxS or sdiA, genes which contribute to quorum sensing in S. Typhimurium, had no effect on the stationary-phase growth suppression. A transcriptional fusion was constructed which indicated that the yhjH was moderately expressed in the exponential phase of growth and up-regulated upon entry into stationary phase. Expression of yhjH was also considerably suppressed by the addition of supernatant from a 24 hour stationary-phase S. Typhimurium culture suggesting that it belongs to a new sensing and signalling regulatory pathway in S. Typhimurium.
Links
LN00A016, research and development project |
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