Characterization of biofilm formation by Exiguobacterium strains in response to arsenic exposure

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  • Valentina B. Pavez
  • Nicolás Pacheco
  • Juan Castro-Severyn
  • Coral Pardo-Esté
  • Alvarez Moran, Javiera Anaxa
  • Phillippi Zepeda
  • Gabriel Krüger
  • Karem Gallardo
  • Francisco Melo
  • Rolando Vernal
  • Carlos Aranda
  • Francisco Remonsellez
  • Claudia P. Saavedra

IMPORTANCE: In this work, we characterized the composition, structure, and functional potential for biofilm formation of Exiguobacterium strains isolated from the Salar de Huasco in Chile in the presence of arsenic, an abundant metalloid in the Salar that exists in different oxidation states. Our results showed that the Exiguobacterium strains tested exhibit a significant capacity to form biofilms when exposed to arsenic, which would contribute to their resistance to the metalloid. The results highlight the importance of biofilm formation and the presence of specific resistance mechanisms in the ability of microorganisms to survive and thrive under adverse conditions.

Original languageEnglish
Article numbere0265723
JournalMicrobiology Spectrum
Issue number6
Number of pages19
Publication statusPublished - 12 Dec 2023

    Research areas

  • arsenic, atomic force microscopy (AFM), biofilm, Exiguobacterium, extracellular polymeric substances (EPS), poly-extremophilic, resistance

ID: 377826262