Assessment and characterization of heavy metals resistance bacteria isolated in Southwestern Mediterranean coastal waters (Bou-Ismail Bay): Impacts of anthropogenic activities

Touahir, Nawal; Alouache, Souhila; Dehane, Djema

doi:10.1016/j.marpolbul.2023.115085

Cited by 3 publications

(3 citation statements)

References 37 publications

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“…Our studies clearly show that most metal-tolerant microorganisms also have resistance to a wide range of antibiotics of various groups. Our results are confirmed by a significant amount of data from the literature [37][38][39][40][41][42]. Heavy metal co-resistance with antibiotics appears to be synergistic in bacterial isolates via similar mechanisms [39].…”

Section: Discussionsupporting

confidence: 83%

“…More than 70% of strains with multiple resistance to heavy metals also had multiple resistance to 11 antibiotics [43]. Most isolates isolated from the marine environment and showing tolerance to heavy metal (Cu, Zn, Hg, Pb, Cd) concentrations ranging from 12.5 to 6400 µg/mL were also resistant to 7 antibiotics [38]. Sajjad et al [40] discovered by PCR amplification distinct antibiotic-resistant genes in bacteria from territories not subject to anthropogenic influence (glaciers).…”

Section: Discussionmentioning

confidence: 99%

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Antibiotic Resistance in Metal-Tolerant Microorganisms from Treatment Facilities

Perelomov,

Sizova,

Gertsen

et al. 2023

Antibiotics

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The study examines the antibiotic resistance of metal-tolerant bacteria isolated from the wastewater treatment plant of a large city to six antibiotics belonging to the β-lactam antibiotics, aminoglycosides and amphenicols. Resistance of bacteria from sewage sludge multitolerant to heavy metals to 18 antibiotics of the β-lactam antibiotics, tetracyclines, aminoglycosides, diaminopyrimidines, amphenicols and ansamycins was studied also. Out of 10, the metal-tolerant microorganisms isolated from wastewater treatment facilities only the Klebsiella pneumonia strain (tolerant to 3 mM Cu) from the sludge of a secondary settling tank did not show resistance to the studied antibiotics at the concentrations considered. Resistance to the maximum amount of antibiotics was typical for strains Serratia fonticola SS0-1, isolated from fresh sewage sludge and resistant to 5 mmol Cu and 3 mmol Pb, or Stenotrophomonas maltophilia SS0-5, also isolated from fresh sludge and resistant to 3 mmol Zn and Cu. It is possible that bacterial resistance to antibiotics develops not only as a result of the use of antibiotics themselves, but also as a result of environmental pollution with heavy metals, and vice versa.

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Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Antibiotic Resistance in Metal-Tolerant Microorganisms from Treatment Facilities

Perelomov,

Sizova,

Gertsen

et al. 2023

Antibiotics

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show abstract

“…For instance, some studies have indicated that culture conditions, such as pH and salinity levels, play crucial roles in expressing cadmium resistance genes [74]. Metal-tolerant microorganisms can induce different genomic responses to avoid disrupting metabolic activity and prevent irreversible cell damage caused by heavy metals [75]. One of these defense mechanisms involves the production of protective mucilaginous substances in response to the metal presence, as widely described in the literature [48,76].…”

Section: Discussionmentioning

confidence: 99%

Heavy Metal Tolerance of Microorganisms Isolated from Coastal Marine Sediments and Their Lead Removal Potential

Alvarado-Campo,

Quintero,

Cuadrado-Cano

et al. 2023

Microorganisms

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In this study, 338 microorganisms, comprising 271 bacteria and 67 fungi, were isolated from sediment samples collected from underexplored Pacific and Caribbean regions of Colombia. Screening trials were conducted on selected strains (n = 276) to assess their tolerance to cadmium (Cd2+), lead (Pb2+), and zinc (Zn2+), leading to the identification of six bacteria capable of withstanding 750 mg·L−1 of each heavy metal ion. Three promising microorganisms, identified as Enterobacter sp. INV PRT213, Pseudomonas sp. INV PRT215, and Stenotrophomonas sp. INV PRT216 were selected for lead removal experiments using LB broth medium supplemented with 400 mg·L−1 Pb2+. Among these, Pseudomonas sp. INV PRT215 exhibited significant potential, removing 49% of initial Pb2+ after 240 min of exposure (16.7 g wet biomass·L−1, pH 5, 30 °C). Infrared spectra of Pb-exposed biomass showed changes in functional groups, including carbonyl groups of amides, carboxylate, phosphate, hydroxyl, and amine groups, compared to the not-exposed control. These changes suggested interactions between the metal and functional groups in the biomass. The findings of this study highlight the potential of microorganisms derived from coastal marine environments as promising candidates for future applications in bioremediation of polluted environments contaminated with heavy metals.

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Microbial Resurgence: A New Era in Agriculture and Environmental Management

Pandey,

Priyadarsini,

Kushwaha

et al. 2024

Industrial Microbiology and Biotechnology

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Assessment and characterization of heavy metals resistance bacteria isolated in Southwestern Mediterranean coastal waters (Bou-Ismail Bay): Impacts of anthropogenic activities

Cited by 3 publications

References 37 publications

Antibiotic Resistance in Metal-Tolerant Microorganisms from Treatment Facilities

Antibiotic Resistance in Metal-Tolerant Microorganisms from Treatment Facilities

Heavy Metal Tolerance of Microorganisms Isolated from Coastal Marine Sediments and Their Lead Removal Potential

Microbial Resurgence: A New Era in Agriculture and Environmental Management

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