Genomic Islands in Burkholderia pseudomallei
Author Information
Author(s): Tuanyok Apichai, Leadem Benjamin R, Auerbach Raymond K, Beckstrom-Sternberg Stephen M, Beckstrom-Sternberg James S, Mayo Mark, Wuthiekanun Vanaporn, Brettin Thomas S, Nierman William C, Peacock Sharon J, Currie Bart J, Wagner David M, Keim Paul
Primary Institution: Northern Arizona University
Hypothesis
The primary differences among Burkholderia pseudomallei genomes are horizontal gene transfer events from diverse bacterial or phage origins.
Conclusion
Acquisition of genomic islands is a major source of genomic diversity within Burkholderia pseudomallei, with common molecular mechanisms facilitating horizontally-acquired GIs across multiple strains.
Supporting Evidence
- 71 distinct genomic islands were identified from the genome sequences of five reference strains.
- Genomic islands vary greatly among B. pseudomallei strains.
- Many genomic islands are associated with tRNA gene loci.
- The presence of genomic islands demonstrates the importance of mobile elements in shaping genetic composition.
- Genomic islands are a major source of genomic diversity within B. pseudomallei.
Takeaway
This study found that different strains of a bacteria called Burkholderia pseudomallei have unique pieces of DNA called genomic islands, which help them adapt and survive in different environments.
Methodology
The study involved genomic comparison and identification of genomic islands in five reference strains of Burkholderia pseudomallei using the Artemis Comparison Tool.
Limitations
The study primarily focused on five strains, which may not represent the full diversity of Burkholderia pseudomallei.
Participant Demographics
Strains were isolated from melioidosis patients in Thailand and Australia.
Digital Object Identifier (DOI)
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