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.Základní údaje
Originální název
Identification of Salmonella enterica serovar Typhimurium genes associated with growth suppression in stationary-phase nutrient broth cultures and in the chicken intestine
Autoři
RYCHLÍK, Ivan (203 Česká republika, garant), Martin GERALD (276 Německo), Ulrich METHNER (276 Německo), Margaret LOVELL (826 Velká Británie a Severní Irsko), Lenka CRDOVÁ (203 Česká republika), Alena SBKOVÁ (203 Česká republika), Mojmír SEVCIK (203 Česká republika), Jiri DAMBORSKÝ (203 Česká republika) a Paul BARROW (826 Velká Británie a Severní Irsko)
Vydání
Archives of Microbiology, 2002, 0302-8933
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 1.903
Kód RIV
RIV/00216224:14310/02:00006912
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000179674200005
Klíčová slova anglicky
VIRULENCE; RESISTANCE; SALMONELLA; YHJH GENE; MUTANT
Štítky
Změněno: 19. 3. 2010 10:54, prof. Mgr. Jiří Damborský, Dr.
Anotace
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.
Návaznosti
LN00A016, projekt VaV |
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