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Marine phage genomics: what have we learned?
John H Paul1, Matthew B Sullivan
1College of Marine Science, University of South Florida, St Petersburg, Florida 33701, USA. paul@marine.usf.edu
Current Opinion in Biotechnology
|June 18, 2005
Summary
Marine phages represent Earth's most abundant life, holding vast genomic potential. Despite limited sequenced genomes, studies reveal unique features and challenges in understanding their biology.
Area of Science:
- Marine microbiology
- Virology
- Genomics
Background:
- Marine phages are the most abundant and diverse life forms on Earth.
- Their genomes represent a significant, largely untapped reservoir of biological information.
- Currently, complete genome sequences are available for only 17 marine phages.
Purpose of the Study:
- To highlight the genomic potential of marine phages.
- To discuss current findings and challenges in marine phage genomics.
- To suggest future research directions in the field.
Main Methods:
- Analysis of existing marine phage genome sequences.
- Examination of data from uncultivated marine viral community genomes (metaviromes).
- Comparative genomics to identify common patterns and unique features.
Main Results:
- Marine phage genomes reveal interesting features, such as photosynthetic genes in cyanophages.
- Common patterns of genomic organization are observed across different marine phages.
- A high proportion (approx. 60%) of unidentifiable open reading frames presents a major challenge for biological interpretation.
Conclusions:
- Marine phages possess significant unexplored genomic potential.
- Further sequencing of diverse marine phage genomes is crucial.
- Understanding the biology of marine phages requires addressing the challenge of uncharacterized genes.