Draft genome sequence of multidrug-resistant Escherichia coli isolated from retail chicken liver in Kosovo

Anahita Ghorbani Tajani1, Afrim Hamidi2, Aniket Sharma1

  • 1Department of Animal Science, University of Wyoming, Laramie, Wyoming, USA.

PubMed

Insights

The draft genome of multidrug-resistant Escherichia coli UA1 was sequenced from chicken liver. This study reveals key antimicrobial resistance genes and plasmids, highlighting food chain contamination risks.

Area of Science:

  • Microbiology
  • Genomics
  • Food Safety

Background:

  • Multidrug-resistant bacteria pose a significant threat to public health.
  • The food chain is a potential reservoir and transmission route for antimicrobial resistance.

Purpose of the Study:

  • To sequence and analyze the draft genome of multidrug-resistant Escherichia coli UA1.
  • To identify antimicrobial resistance genes (ARGs) and plasmids within the isolate.
  • To understand the dissemination of antimicrobial resistance in the food chain.

Main Methods:

  • Whole-genome sequencing of Escherichia coli UA1.
  • Bioinformatic analysis for genome assembly and gene identification.
  • Identification of antimicrobial resistance genes and plasmid sequences.

Main Results:

  • The draft genome of Escherichia coli UA1 was assembled into 86 contigs and 214 scaffolds.
  • Key ARGs including blaEC-18, blaCTX-M-55, and dfrA36 were identified.
  • Presence of virulence genes and plasmids associated with antimicrobial resistance was confirmed.

Conclusions:

  • The genome data provides insights into the genetic basis of multidrug resistance in this E. coli strain.
  • The findings underscore the importance of monitoring antimicrobial resistance in food products.
  • Retail chicken liver can harbor multidrug-resistant bacteria, indicating potential food chain contamination.

Related Concept Videos

Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

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...
49.0K
Stringent Response in E. coli01:23

Stringent Response in E. coli

Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...
408
Genomic DNA in Eukaryotes00:58

Genomic DNA in Eukaryotes

Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
53.3K