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<p><i>Chryseomicrobium imtechense</i> is a bacterium primarily isolated in environment samples. Here we demonstrated the virulent and antimicrobial resistant profile of the <i>C. imtechense</i> LBV029/19 strain, which was isolated in a pyometra infection in canines, being related as causal agent of that disease. The bacterium was recovered from purulent content of a uterus with pyometra and the identity was confirmed by both, biochemical tests followed MALDI-TOF MS and <i>16S-rDNA</i> gene sequencing. Antimicrobial susceptibility test, biofilm formation assessment, genomic sequencing with Illumina MiSeq platform followed by the genome characterization and phylogenetic relationships were conducted with <i>C. imtechense</i> LBV029/19 strain. The phylogenetic analysis revealed a close evolutionary relationship between the <i>C. imtechense</i> LBV029/19 and the others publicly available <i>16S-rDNA</i> genes of <i>C. imtechense</i>. The in vitro assays shown that <i>C. imtechense</i> LBV029/19 has a strong ability for biofilm formation. Additionally, the antimicrobial susceptibility tests revealed a smaller inhibition zone for novobiocin, cefuroxime, and erythromycin. To the best of our knowledge the <i>C. imtechense</i> LBV029/19 genome is the first genome sequenced and available of <i>C. imtechense</i>. Regarding the genotypic profile, resistance genes to tetracyclines, fluoroquinolones, beta-lactams, and multidrug resistance were present in this genome. Additionally, genes encoded to virulence factors, including biofilm formation, motility, and sporulation were identified. The phenotypic profile associated with the genotypic description indicates the potential of <i>C. imtechense</i> LBV029/19 as a primary agent of animal infectious diseases. The genomic description will contribute to the understanding of the biology of the bacterium and the pathogenesis process involved in the disease.</p>

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Genomic and phenotypic characterization of Chryseomicrobium imtechense from canine pyometra

  • 期刊论文

  • 发表日期：

    2025年2月12日

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  • Mariana Costa Torres,
  • Laura Cadó Nemitz,
  • Maria Eduarda Rocha Jacques da Silva,
  • Andreza Francisco Martins,
  • Afonso Luis Barth,
  • Franciele Maboni Siqueira

摘要

Chryseomicrobium imtechense is a bacterium primarily isolated in environment samples. Here we demonstrated the virulent and antimicrobial resistant profile of the C. imtechense LBV029/19 strain, which was isolated in a pyometra infection in canines, being related as causal agent of that disease. The bacterium was recovered from purulent content of a uterus with pyometra and the identity was confirmed by both, biochemical tests followed MALDI-TOF MS and 16S-rDNA gene sequencing. Antimicrobial susceptibility test, biofilm formation assessment, genomic sequencing with Illumina MiSeq platform followed by the genome characterization and phylogenetic relationships were conducted with C. imtechense LBV029/19 strain. The phylogenetic analysis revealed a close evolutionary relationship between the C. imtechense LBV029/19 and the others publicly available 16S-rDNA genes of C. imtechense. The in vitro assays shown that C. imtechense LBV029/19 has a strong ability for biofilm formation. Additionally, the antimicrobial susceptibility tests revealed a smaller inhibition zone for novobiocin, cefuroxime, and erythromycin. To the best of our knowledge the C. imtechense LBV029/19 genome is the first genome sequenced and available of C. imtechense. Regarding the genotypic profile, resistance genes to tetracyclines, fluoroquinolones, beta-lactams, and multidrug resistance were present in this genome. Additionally, genes encoded to virulence factors, including biofilm formation, motility, and sporulation were identified. The phenotypic profile associated with the genotypic description indicates the potential of C. imtechense LBV029/19 as a primary agent of animal infectious diseases. The genomic description will contribute to the understanding of the biology of the bacterium and the pathogenesis process involved in the disease.