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Bacterial evolution during prolonged stationary phase


Bačun-Družina, Višnja; Butorac, Ana; Mrvčić, Jasna; Filipčić, Martina; Stehlik-Tomas, Vesna; Gjuračić, Krešimir
Bacterial evolution during prolonged stationary phase // 50 godina molekularne biologije u Hrvatskoj -zbornik sažetaka / Zahratka, K. ; Plohl, M. ; Ambriović-Ristov, A. (ur.).
Zagreb: Institut Ruđer Bošković, 2008. str. 54-54 (poster, međunarodna recenzija, sažetak, znanstveni)


Naslov
Bacterial evolution during prolonged stationary phase

Autori
Bačun-Družina, Višnja ; Butorac, Ana ; Mrvčić, Jasna ; Filipčić, Martina ; Stehlik-Tomas, Vesna ; Gjuračić, Krešimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
50 godina molekularne biologije u Hrvatskoj -zbornik sažetaka / Zahratka, K. ; Plohl, M. ; Ambriović-Ristov, A. - Zagreb : Institut Ruđer Bošković, 2008, 54-54

ISBN
978-953-6690-78-7

Skup
50 godina molekularne biologije u Hrvatskoj

Mjesto i datum
Zagreb, Hrvatska, 20-21.11.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
GASP phenomenon; Escherichia coli; Salmonella enterica; Lactobacillus brevis

Sažetak
The feature of Escherichia coli to grow in batch culture up to five years, only with the addition of water, has been termed Growth Advantage in Stationary Phase (GASP) phenotype. This phenomenon has been observed in Gram-negative and Gram-positive bacteria monocultures. GASP phenotype is due to selection of beneficial mutations in two global regulators of transcription of rpoS and/or lrp genes, as well as gene rearrangement involving IS5 insertion sequences. The aim of this investigation is to analyze mixed populations of Lactobacillus brevis L62 and E. coli or Salmonella enterica serovar Typhimurium during the prolonged period of carbon starvation for the evaluation of appearance of GASP mutants. According to previous analyses of the competition growth of E. coli, mutants can result in four GASP phenotypes ; however, we determined a new phenotype that we named moderate. This new class is characterized by GASP mutants of enterobacteria which are capable of outgrowing the younger lactobacillus culture and then coexisting together in the same ratio during 18 days. Studying cell traits in mixed bacterial cultures during prolonged stationary phase gives us a new insight into their interaction and evolution in order to control pathogenic bacteria.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija



POVEZANOST RADA


Projekt / tema
058-0583444-3466 - Stresom izazvana raznolikost i evolucija mješovitih bakterijskih kultura (Višnja Bačun-Družina, )
058-0583444-3483 - Mineralima obogaćene funkcionalne starter kulture u prehrambenoj industriji (Vesna Stehlik-Tomas, )

Ustanove
Prehrambeno-biotehnološki fakultet, Zagreb