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Related Experiment Video

Updated: May 10, 2025

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics

Understanding the Impact of Temperate Bacteriophages on Their Lysogens Through Transcriptomics

Published on: January 5, 2024

Distinguishing Lytic and Temperate Infection Dynamics in the Environment.

Isha Tripathi^1,2,3, Naomi Barber-Choi^1,2, Lauren Woodward¹

¹Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.

|April 26, 2025

Summary

This summary is machine-generated.

Viral infections impact bacterial populations, influencing global cycles. This study distinguishes between lytic and temperate viral infection dynamics, crucial for understanding ecosystem stability and bacterial overgrowth.

Keywords:

lytic temperate theoretical model viral ecology

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Last Updated: May 10, 2025

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Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus

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Published on: October 7, 2011

Area of Science:

Ecology
Microbiology
Biogeochemistry

Background:

Viral infections are key drivers of bacterial diversity and global biogeochemical cycles.
Viral infection dynamics can be lytic (suppressing bacterial growth) or temperate (enhancing it).
Distinguishing between these dynamics is vital for ecosystem stability, yet theoretical and empirical fields remain disconnected.

Purpose of the Study:

To bridge the gap between theoretical ecology and environmental microbiology regarding viral infection dynamics.
To simulate empirical approaches to differentiate between theoretical models of lytic and temperate viral infections.
To provide a method for researchers to determine dominant viral infection dynamics in their ecosystems.

Main Methods:

Simulated common empirical approaches to analyze theoretical models of viral infection.
Utilized Principal Component Analysis (PCA) and correlation analyses to compare model predictions.
Introduced simulated nutrient addition to test model distinguishability.

Main Results:

Theoretical models showed similar predictions under standard conditions, despite mechanistic differences.
Nutrient addition revealed key differences: lytic models showed instability without host increase, while temperate models remained stable with increased host densities.
A dichotomous key was developed to differentiate between lytic and temperate dynamics.

Conclusions:

Mechanistic differences in viral infection models are subtle and hard to distinguish empirically under normal conditions.
Nutrient availability is a critical factor that can differentiate between lytic and temperate viral infection dynamics.
The developed dichotomous key offers a practical tool for environmental microbiologists to identify dominant viral infection strategies in ecosystems.