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Published on: September 28, 2022
A giant Pseudomonas phage from Poland.
Zuzanna Drulis-Kawa1, Tomasz Olszak, Katarzyna Danis
1Institute of Genetics and Microbiology, University of Wroclaw, Przybyszewskiego 63/77, 51-148, Wroclaw, Poland, zuzanna.drulis-kawa@microb.uni.wroc.pl.
Archives of Virology
|September 28, 2013
Summary
A novel giant virus, Pseudomonas phage PA5oct, was discovered in Poland. This unique Myoviridae family phage exhibits distinct morphological and genomic characteristics compared to other known giant phages.
Area of Science:
- Microbiology
- Virology
- Bacteriophage Research
Background:
- Giant phages, large bacteriophages, are crucial in microbial ecology and evolution.
- The Myoviridae family comprises contractile-tailed phages, with diverse host ranges and genomic structures.
- Characterization of novel phages expands our understanding of viral diversity and interactions within microbial communities.
Purpose of the Study:
- To describe a newly isolated giant phage, Pseudomonas phage PA5oct.
- To characterize its unique virion morphology and genomic properties.
- To investigate its biological characteristics, including latent period, burst size, and stability.
Main Methods:
- Isolation and purification of bacteriophage from environmental samples (sewage).
- Electron microscopy for detailed virion morphology analysis (head and tail dimensions).
- Genome size estimation and analysis of biological properties (latent period, burst size, stability assays).
Main Results:
- Pseudomonas phage PA5oct, a novel giant phage belonging to the Myoviridae family, was isolated.
- Virion morphology: head (131 nm diameter) and tail (136 x 19 nm) dimensions distinct from known giant phages.
- Genome size (approx. 375 kbp) is larger than other known tailed phages. Characterized latent period, burst size, and stability to heat, chloroform, and pH.
Conclusions:
- Pseudomonas phage PA5oct represents a novel giant phage with unique morphological and genomic features.
- Its distinct characteristics differentiate it from previously described giant phages.
- Further research into PA5oct can provide insights into the evolution and diversity of giant phages.
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