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Publication
Climatic alterations influence bacterial growth, biofilm production and antimicrobial resistance profiles in aeromonas spp.
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Advisor(s)
Abstract(s)
Climate change is expected to create environmental disruptions that will impact a wide
array of biota. Projections for freshwater ecosystems include severe alterations with gradients across
geographical areas. Life traits in bacteria are modulated by environmental parameters, but there is
still uncertainty regarding bacterial responses to changes caused by climatic alterations. In this study,
we used a river water microcosm model to evaluate how Aeromonas spp., an important pathogenic
and zoonotic genus ubiquitary in aquatic ecosystems, responds to environmental variations of temperature
and pH as expected by future projections. Namely, we evaluated bacterial growth, biofilm
production and antimicrobial resistance profiles of Aeromonas species in pure and mixed cultures.
Biofilm production was significantly influenced by temperature and culture, while temperature and
pH affected bacterial growth. Reversion of antimicrobial susceptibility status occurred in the majority
of strains and tested antimicrobial compounds, with several combinations of temperature and pH
contributing to this effect. Current results highlight the consequences that bacterial genus such as
Aeromonas will experience with climatic alterations, specifically how their proliferation and virulence
and phenotypic resistance expression will be modulated. Such information is fundamental to predict
and prevent future outbreaks and deleterious effects that these bacterial species might have in human
and animal populations.
Description
Keywords
Microcosm Aeromonas Climate change Temperature pH Biofilm Antimicrobial resistance Water
Citation
Grilo, M. L., Pereira, A., Sousa-Santos, C., Robalo, J. I. & Oliveira, M. (2021). Climatic alterations influence bacterial growth, biofilm production and antimicrobial resistance profiles in aeromonas spp. Antibiotics, 8(10), 1-15 https://doi.org/10.3390/ antibiotics10081008
Publisher
Climatic alterations influence bacterial growth, biofilm production and antimicrobial resistance profiles in aeromonas spp. MDPI,