Pregled bibliografske jedinice broj: 135199
Growth advantage in stationary phase phenotype induced by resistance to Streptomycin or Nalidix acid in Escherichia coli and Salmonella enterica
Growth advantage in stationary phase phenotype induced by resistance to Streptomycin or Nalidix acid in Escherichia coli and Salmonella enterica // Abstracts of Central Europen Symposium Antimicrobal Resistance
Zagreb, 2003. (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 135199 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Growth advantage in stationary phase phenotype induced by resistance to Streptomycin or Nalidix acid in Escherichia coli and Salmonella enterica
(Growth advantage in stationary phase phenotype induced by resistance to Streptomycin or Nalidixic acid in Ecsherichia coli and Salmonella enterica)
Autori
Bačun-Družina, Višnja ; Čagalj, Željka ; Franekić Čolić, Jasna
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Abstracts of Central Europen Symposium Antimicrobal Resistance
/ - Zagreb, 2003
Skup
CESAR 2003 Central European Symposium on Antimicrobal Resistance
Mjesto i datum
Brijuni, Croatia, 04.07.2003. - 07.07.2003
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Escherichia coli; Salmonella enterica
Sažetak
Stressful environment, which is non favourable for growth, forces static microorganisms to rearrange their metabolism and increase the rate of random mutagenesis. The ability of stationary phase of E. coli to grow for a long period of time, over three years, during carbon starvation has been termed Growth Advantage in Stationary Phase (GASP) phenotype. This phenomenon has been observed in a range of microorganisms, including gram-negative and gram-positive bacteria. GASP phenotype confers with a loss of function of the rpoS gene, which encodes a stationary phase global regulator sigma S. The purpose of our study was to analyze mixed populations of E. coli K12 and S. enterica serovar Typhimurium during the prolonged period of carbon starvation due to the evaluation of the GASP phenomenon. In the mixed cultures during eleven days of growth in minimal medium, the aged cells or the rpoS mutant of E. coli do not have the ability to overgrow the younger or the cells of the same age of another bacterial species. We have isolated isogenic mutants resistant to streptomycin or nalidixic acid that show the presence of GASP phenomenon. We presume that the phenomenon might be caused by additional stress, such as resistance to a growth inhibitor.
Izvorni jezik
Engleski
Znanstvena područja
Biotehnologija
