lysogeny

lysogeny
/luy soj"euh nee/, n. Microbiol.
the state of being lysogenic.
[1955-60; LYSO(GENIC) + -GENY]

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Type of life cycle that takes place in a bacteriophage after it infects certain types of bacteria.

The bacteriophage's genome (entire collection of genes) enters the chromosome of the host bacterium and replicates together with it. No offspring viruses are produced; instead, the infecting virus lies dormant within the host's chromosome until the host is exposed to certain stimuli, such as ultraviolet light. At that point, the virus genome is removed from the host chromosome and begins to multiply, forming new viruses. Finally, the bacterial host is destroyed (lysed), releasing virus particles into the environment to infect new bacterial cells.

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      type of life cycle that takes place when a bacteriophage infects certain types of bacteria. In this process, the genome (the collection of genes in the nucleic acid core of a virus) of the bacteriophage stably integrates into the chromosome of the host bacterium and replicates in concert with it. No progeny viruses are produced. Instead, the infecting virus lies dormant within the bacterium's chromosome until the bacterium is exposed to certain stimuli, such as ultraviolet light. Following this induction event, the virus enters a life cycle in which its genome is excised from the host chromosome and begins to multiply, forming new progeny viruses. Ultimately the bacterial host is destroyed (lysed) and the virus particles are released into the environment and infect new bacterial cells. This process was first explained by the French biologist André Lwoff (Lwoff, André) in the early 1950s.

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Universalium. 2010.

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Look at other dictionaries:

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  • lysogeny — [lī säj′ə nē] n. a dormant viral infection of bacteria in which the genetic material of a virus combines with that of a host bacterium lysogenic [lī΄sō jen′ik] adj …   English World dictionary

  • lysogeny — noun the condition of a host bacterium that has incorporated a phage into its own genetic material when a phage infects a bacterium it can either destroy its host or be incorporated in the host genome in a state of lysogeny • Syn: ↑lysogenicity • …   Useful english dictionary

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  • lysogeny — noun Date: 1956 the state of being lysogenic …   New Collegiate Dictionary

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