Slowly replicating lytic viruses: pseudolysogenic persistence and within-host competition

Details Slowly replicating lytic viruses: pseudolysogenic persistence and within-host competition Slowly replicating lytic viruses: pseudolysogenic persistence and within-host competition

2008-10-15

arxiv.org/abs/0810.2760v2

Phys. Rev. Lett. 102, 178103 (2009)

Biology

Quantitative Biology

Populations and Evolution

3 figures, 16 pages (4 pages in Phys. Rev. Lett. format)

Scientific paper

We study the population dynamics of lytic viruses which replicate slowly in dividing host cells within an organism or cell culture, and find a range of viral replication rates that allows viruses to persist, avoiding extinction of host cells or dilution of viruses at too rapid or too slow viral replication. For the within-host competition between multiple viral strains, a strain with a "stable" replication rate could outcompete another strain with a higher or lower replication rate, therefore natural selection of viruses stabilizes the viral persistence. However, when strains with higher and lower than the "stable" value replication rates are both present, competition between strains does not result in dominance of one strain, but in their coexistence.

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