Complete genome sequences of toxigenic Clostridioides difficile isolated from Australian feral horses.

This research article presents the complete genome sequences of two harmful bacterial strains collected from the feces of wild horses in Australia.

Objective of the Research

The research aims to provide comprehensive genomic findings of two toxigenic strains of the Clostridioides difficile bacterium which were isolated from the feces of feral horses in Australia. These findings contribute to the body of knowledge needed to monitor these infections, especially considering the recent increase in people falling ill due to community-associated infections.

Method of the Research

• The researchers isolated two strains of the Clostridioides difficile bacteria from the excreta of wild horses.
• They provided the complete circular genome of these bacterial strains, pointing out that robust genomic information is essential to study pathogens’ genetic features and pathogenic mechanisms.
• Genome sequencing techniques were employed to unravel the genetic makeup of the two bacterial strains, referred to as Genome N64 and Genome H251 in the study.

Findings from the Research

• Genome N64, categorized as sequence type 964, consists of a single chromosome of 4,078,791 base pairs (bp). This numerical representation provides specifics about the total genetic content of this bacterial strain.
• On the other hand, Genome H251, identified as sequence type 963, is composed of one chromosome made up of 4,304,722 base pairs (bp) and three plasmids — these are miniature genetic structures that are separate from the bacterial chromosome. The sizes of these plasmids are 150,942 bp, 11,534 bp, and 9,074 bp.
• Understanding the genomic characteristics of the bacterial strains provides valuable information about their pathogenic capabilities and their overall role in disease transmission within the community.