Nanda Arun M, Thormann Kai, Frunzke Julia
Institut für Bio- und Geowissenschaften, IBG-1: Biotechnologie, Forschungszentrum Jülich, Jülich, Germany.
Institut für Mikrobiologie und Molekularbiologie, Justus-Liebig-Universität Gießen, Gießen, Germany.
J Bacteriol. 2015 Feb;197(3):410-9. doi: 10.1128/JB.02230-14. Epub 2014 Nov 17.
Bacteriophages and genetic elements, such as prophage-like elements, pathogenicity islands, and phage morons, make up a considerable amount of bacterial genomes. Their transfer and subsequent activity within the host's genetic circuitry have had a significant impact on bacterial evolution. In this review, we consider what underlying mechanisms might cause the spontaneous activity of lysogenic phages in single bacterial cells and how the spontaneous induction of prophages can lead to competitive advantages for and influence the lifestyle of bacterial populations or the virulence of pathogenic strains.
噬菌体和遗传元件,如前噬菌体样元件、致病岛和噬菌体附生基因,构成了相当一部分细菌基因组。它们在宿主遗传回路中的转移及其后续活性对细菌进化产生了重大影响。在本综述中,我们思考了哪些潜在机制可能导致单个细菌细胞中溶原性噬菌体的自发活性,以及前噬菌体的自发诱导如何为细菌群体带来竞争优势并影响其生活方式或致病菌株的毒力。