Article
Article
Lysogeny
Article By:
Barksdale, Lane Department of Microbiology, School of Medicine, New York University Medical Center, New York, New York.
Last reviewed:August 2020
DOI:https://doi.org/10.1036/1097-8542.394000
Almost all strains of bacteria are lysogenic; that is, they have the capacity on rare occasions to lyse with the liberation of particles of bacteriophage (see illustration). Such particles can be detected by their ability to form plaques (colonies of bacteriophage) on lawns of sensitive (indicator) bacteria. The genetic determinant of the capacity of lysogenic bacteria to produce bacteriophage is a repressed phage genome (provirus) which exists in the bacterium in one of two states: (1) integrated into the bacterial chromosome (most cases), or (2) occupying some extrachromosomal location (rare cases).
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