Related Experiment Video
Updated: Apr 3, 2026
06:10
Following Cell-fate in E. coli After Infection by Phage Lambda
Published on: October 14, 2011
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Arbitrium phages can manipulate each other's lysis/lysogeny decisions.
R Manley1, R Woodhams2, T J Arrowsmith3
1Environment and Sustainability Institute, Penryn Campus, Penryn, Cornwall TR10 9FE, UK; Department of Biosciences, University of Exeter, Streatham Campus, Exeter EX4 4QD, UK.
Cell
|April 2, 2026
Summary
Bacteriophage viruses use peptide signals to control their life cycles. Different phage species can communicate, influencing each other's infection dynamics and fitness, driving viral evolution.
Area of Science:
- Microbiology
- Virology
- Molecular Biology
Background:
- Viruses, including bacteriophages (phages), can alternate between lytic replication and dormancy (lysogeny).
- Some phages utilize peptide-based communication systems, termed "arbitrium" systems, to regulate the lysis/lysogeny decision.
- High peptide concentrations signal host scarcity, inducing lysogeny, while low concentrations indicate host abundance, promoting lysis.
Purpose of the Study:
- To investigate the cross-species communication and influence of arbitrium phages.
- To understand how inter-phage signaling affects infection dynamics and fitness.
- To explore the evolutionary implications of arbitrium system crosstalk and diversification.
Main Methods:
- Experimental analysis of arbitrium phage interactions.
- Observation of infection dynamics in co-culture systems.
- Assessment of phage fitness under varying signaling conditions.
Main Results:
- Arbitrium phages from different species and genera can influence each other's infection behavior.
- Secretion of similar communication peptides leads to premature lysogenization in signal-receiving phages.
- Signal-emitting phages experience elevated fitness due to this inter-phage communication.
Conclusions:
- Inter-phage communication via arbitrium systems impacts viral infection strategies.
- Antagonistic coevolution between phages manipulating each other's behavior drives arbitrium system diversification.
- Horizontal gene exchange facilitates escape from signaling crosstalk, contributing to rapid evolution.
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