What are the differences between lytic and lysogenic?
Posted January 26, 2023
Lytic and Lysogenic cycles refer to viral reproduction mechanisms that only occur inside a host cell. There are several significant differences between these two cycles.
Basis of differentiation |
Lytic |
Lysogenic |
Definition |
Is a type of a viral reproduction mechanism that results in the lysis of the infected cell |
Is a type of viral reproduction mechanism where the viral or phage DNA is integrated into the host cell DNA |
Integration of the Viral DNA |
Viral DNA does not integrate into the host DNA |
Viral DNA integrates into the host DNA |
Prophage stage |
Prophage stage is absent |
There is a prophage stage |
Hydrolysis of host DNA |
Host DNA is hydrolyzed |
Host DNA is not hydrolyzed |
Relation between viral DNA replication and the host’s DNA replication |
Viral DNA replication and the host’s DNA replication occur independently from each other |
Viral DNA replication and the host’s DNA replication occur simultaneously |
Productivity of Viral DNA |
Independent replication of the viral DNA results in higher productivity of viral DNA |
Simultaneous replication of the virus and the host’s DNA results in lower productivity of viral DNA |
Virulency
|
The lytic virus is virulent
|
The lysogenic virus is non virulent |
Time to complete the cycle |
Is completed within a short period of time |
Takes a longer time to complete |
Liberation of the viral particles or a progeny
|
Produces viral progenies since viral particles are released |
Does not produce viral progenies since viral particles are not liberated |
Lysis of the Host Cell
|
Host cell is lysed during the release of viral particles
|
Host cell is not lysed |
Effect on host’s cellular mechanism |
Host’s cellular mechanism completely taken over by the viral genome |
Host’s cellular mechanism is only minimally disrupted by the viral genome |
Order
|
Cannot follow the lysogenic cycle |
Can follow the lytic cycle |
Symptoms of viral infection |
Manifests symptoms of viral replication |
Does not manifest symptoms of viral replication |
Impact on genetic recombination in the host bacterium |
Does not allow genetic recombination in the host bacterium |
Allows genetic recombination of the host bacterium |