Related Experiment Video
Updated: Oct 29, 2025

09:44
Characterization of a Pathogenic Escherichia coli Strain Derived from Oreochromis spp. Farms Using Whole-Genome Sequencing
Published on: December 23, 2022
2.6K
Complete Genome Sequences of Priestia megaterium Type and Clinical Strains Feature Complex Plasmid Arrays
Philip S Shwed1, J Crosthwait1, K Weedmark2
1Environmental and Radiation Health Sciences Directorate, HECSB, Health Canada, Ottawa, ON, Canada.
Microbiology Resource Announcements
|July 8, 2021
Summary
This study presents high-quality genome sequences for Priestia megaterium, including the type strain and two clinical isolates. These genomic data offer valuable insights into bacterial biology and potential clinical relevance.
Area of Science:
- Microbiology
- Genomics
- Bacterial Pathogenesis
Background:
- Priestia megaterium is a versatile bacterium with diverse applications.
- Understanding the genomic landscape of clinical isolates is crucial for public health.
Purpose of the Study:
- To generate high-quality, complete genome sequences of Priestia megaterium ATCC 14581T.
- To sequence the genomes of two clinical strains of P. megaterium isolated from human samples.
Main Methods:
- Whole-genome sequencing using advanced methodologies.
- Bioinformatic analysis for genome assembly and characterization.
- Plasmid profiling and analysis.
Main Results:
- High-quality complete genome sequences were obtained for P. megaterium ATCC 14581T.
- Genome sequences for two distinct clinical P. megaterium strains were successfully generated.
- Plasmid arrays were characterized for all sequenced strains.
Conclusions:
- The generated genomic data provide a foundational resource for future research on Priestia megaterium.
- Comparative genomics can elucidate the genetic basis of P. megaterium's adaptation and potential pathogenicity.
- This work facilitates further investigation into the role of P. megaterium in clinical settings.
Related Concept Videos
Modern Molecular Taxonomy
313
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
313
Plasmids
399
Plasmids are extrachromosomal DNA molecules found in bacteria, archaea, and some eukaryotic microbes like yeast. These small, circular DNA structures typically contain fewer than 30 genes, although some may exist linearly. Plasmids vary in their number within a cell, known as copy number. Single-copy plasmids are present in one copy per cell and multi-copy plasmids are present in multiple copies, reaching over 100 copies per cell.Plasmids usually replicate independently of the chromosomal DNA...
399
Genomic DNA in Prokaryotes
45.8K
The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
Genomic Diversity in Bacteria
Although bacterial genomes are much...
45.8K
Bacterial Phylum Tenericutes
189
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
189

