Increased reproductive fitness of Escherichia coli lambda lysogens.
AUTOR(ES)
Lin, L
RESUMO
Lambda lysogens of Escherichia coli reproduce more rapidly than nonlysogens during aerobic growth in glucose-limited chemostats. If the environment is changed to anaerobic growth, the situation is reversed, and the lysogen reproduces more slowly than the nonlysogen. Based on a tetrazolium dye assay, the increased fitness of the lambda lysogen during aerobic growth seems to result from a continued high metabolic rate as glucose becomes limiting, whereas the metabolic rate of the nonlysogen declines. The lambda rex gene is required for the growth advantage of lysogens since lack of rex function causes lambda lysogens to lose their reproductive advantage over nonlysogens.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=353857Documentos Relacionados
- Reproductive fitness of P1, P2, and Mu lysogens of Escherichia coli.
- Prophage substitution and prophage loss from superinfected Escherichia coli recA(P1) lysogens.
- Isolation and heteroduplex mapping of a lambda transducing bacteriophage carrying the structural genes for carbamoylphosphate synthase: regulation of enzyme synthesis in Escherichia coli K-12 lysogens.
- Direct and general selection for lysogens of Escherichia coli by phage lambda recombinant clones.
- A method for the screening of fusion protein expression by lambda-GT11 recombinant clones without the preparation of lysogens.