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[Chronic infection of Acholeplasma laidlawii by a group L 1 mycoplasma virus]
Abstract:
Mycoplasma virus MVL 51, of the group L1 of Gourlay, has been shown to induce a chronic cell infection of two reference strains (1305/68 and JA 1) of Acholeplasma laidlawii. Titers of virus and cells remain at a fairly high level during infection, around 10(8) units/mL, with a mean ratio of approximately 1 PFU/1 CFU, as under control of a regulation mechanism. However, sudden spontaneous variations in the virus level do occur, from time to time, thus suggesting transient regulation breaks but not impairing the pattern of a more extensive regulation cycle.
Insights
Mycoplasma virus MVL 51 establishes a chronic infection in Acholeplasma laidlawii, maintaining high virus and cell titers regulated by a cycle. Occasional breaks in regulation occur but do not disrupt the overall cycle.
Area of Science:
- Virology
- Microbiology
- Cell Biology
Context:
- Mycoplasma virus MVL 51, belonging to the L1 group, infects Acholeplasma laidlawii.
- Chronic infection model established using reference strains 1305/68 and JA 1.
Purpose:
- To investigate the infection dynamics of Mycoplasma virus MVL 51 in Acholeplasma laidlawii.
- To characterize the regulation mechanisms governing chronic viral infections in bacteria.
Summary:
- Mycoplasma virus MVL 51 induces a chronic infection in Acholeplasma laidlawii, maintaining high virus (PFU) and cell (CFU) titers (~10^8 units/mL).
- A stable ratio of approximately 1 PFU/1 CFU suggests a regulatory mechanism controlling the infection.
- Spontaneous, transient variations in virus levels indicate temporary breaks within a larger regulatory cycle.
Impact:
- Provides insights into the regulation of chronic viral infections in prokaryotes.
- Establishes a model for studying host-virus interactions in Mycoplasma and Acholeplasma.
- Contributes to understanding bacterial virus-host dynamics and potential control mechanisms.