Τίτλος:
Microbial strains isolated from CO2-venting Kolumbo submarine volcano show enhanced co-tolerance to acidity and antibiotics
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
As ocean acidification intensifies, there is growing global concern about the impacts that future pH levels are likely to have on marine life and ecosystems. By analogy, a steep decrease of seawater pH with depth is encountered inside the Kolumbo submarine volcano (northeast Santorini) as a result of natural CO2 venting, making this system ideal for ocean acidification research. Here, we investigated whether the increase of acidity towards deeper layers of Kolumbo crater had any effect on relevant phenotypic traits of bacterial isolates. A total of 31 Pseudomonas strains were isolated from both surface- (SSL) and deep-seawater layers (DSL), with the latter presenting a significantly higher acid tolerance. In particular, the DSL strains were able to cope with H+ levels that were 18 times higher. Similarly, the DSL isolates exhibited a significantly higher tolerance than SSL strains against six commonly used antibiotics and As(III). More importantly, a significant positive correlation was revealed between antibiotics and acid tolerance across the entire set of SSL and DSL isolates. Our findings imply that Pseudomonas species with higher resilience to antibiotics could be favored by the prospect of acidifying oceans. Further studies are required to determine if this feature is universal across marine bacteria and to assess potential ecological impacts. © 2019 Elsevier Ltd
Συγγραφείς:
Mandalakis, M.
Gavriilidou, A.
Polymenakou, P.N.
Christakis, C.A.
Nomikou, P.
Medvecký, M.
Kilias, S.P.
Kentouri, M.
Kotoulas, G.
Magoulas, A.
Περιοδικό:
Marine Environmental Research
Εκδότης:
Elsevier Ireland Ltd
Λέξεις-κλειδιά:
Acidification; Bacteria; Carbon dioxide; Digital subscriber lines; Ecology; Heavy metals; Seawater; Submarines; Volcanoes, Ecological impacts; Extreme environment; Microbial ecology; Ocean acidifications; Positive correlations; Pseudomonas; Pseudomonas species; Pseudomonas strain, Antibiotics, ampicillin; antibiotic agent; antimony derivative; arsenic derivative; cefuroxime; chloramphenicol; ciprofloxacin; erythromycin; hydrogen; mercury derivative; sea water; strontium; tetracycline; acid; antiinfective agent; carbon dioxide, acidification; antibiotic resistance; carbon dioxide; heavy metal; marine environment; microbial activity; microbial ecology; submarine volcano, acid tolerance; acidification; acidity; bacterial strain; bacterium isolate; bacterium isolation; controlled study; correlation analysis; Greece; Kolumbo submarine volcano; minimum inhibitory concentration; nonhuman; pH; phenotype; Pseudomonas; Pseudomonas aeruginosa; Pseudomonas balearica; Pseudomonas stutzeri; RNA sequence; temperature; volcano; classification; drug effect; ecosystem; hydrothermal vent; isolation and purification; microbiology; sea, Aegean Sea; Kolumbo Volcano; Mediterranean Sea, Bacteria (microorganisms); Pseudomonas, Acids; Anti-Bacterial Agents; Carbon Dioxide; Ecosystem; Hydrogen-Ion Concentration; Hydrothermal Vents; Oceans and Seas; Pseudomonas; Seawater
DOI:
10.1016/j.marenvres.2019.01.002
