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Enteric Viruses Hitch a Ride on the Evolutionary Highway
Melissa K Jones1, Stephanie M Karst2
1Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, USA.
Cell Host & Microbe
|January 12, 2018
Summary
RNA viruses can recombine genetic material during co-infections. Erickson et al. show enteric RNA viruses bind bacteria, increasing co-infections and thus viral recombination and adaptability.
Area of Science:
- Virology
- Microbiology
- Genetics
Background:
- RNA viruses can exchange genetic material through recombination when co-infecting the same host.
- The in vivo frequency and mechanisms promoting viral co-infections remain largely undetermined.
Purpose of the Study:
- To investigate the in vivo frequency of co-infections for enteric RNA viruses.
- To elucidate the mechanisms by which enteric RNA viruses enhance their genetic recombination.
Main Methods:
- Utilized in vivo models to study enteric RNA virus-bacteria interactions.
- Analyzed viral genetic material for evidence of recombination.
Main Results:
- Enteric RNA viruses exhibit multi-virion binding to bacteria.
- This binding concentrates viruses, increasing the likelihood of co-infection.
- Increased co-infection leads to a higher frequency of viral genetic recombination.
Conclusions:
- Bacterial co-infection is a significant factor promoting genetic recombination in enteric RNA viruses.
- Multi-virion binding to bacteria enhances virus adaptability through increased recombination.
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