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Cited by 26Heavy Metal Pollution RemediationAdsorption and biosorption for pollutant removalHeavy metals in environment

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

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Alvarado-Campo, Katleen L., Quintero, Marynes, Cuadrado-Cano, Bernarda, Montoya-Giraldo, Manuela, Otero-Tejada, Elver Luis, Blandón, Lina, Sánchez, Olga, Zuleta-Correa, Ana, Gómez-León, Javier·2023·Microorganisms
DOI 10.3390/microorganisms11112708PMC PMC10673411
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Abstract

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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  • The diminutive size, swift proliferation, and straightforward cultivation of bacteria facilitate their success in diverse situations.

    “The diminutive size, swift proliferation, and straightforward cultivation of bacteria facilitate their success in diverse situations [17].”

    From Harnessing bacterial consortia for effective bioremediation: targeted removal of heavy metals, hydrocarbons, and persistent pollutants (2025) · cites this paper as [17]

    The Discussion reports that bacteria predominated among cultivable isolates, and the Introduction says marine-coastal organisms can thrive under diverse conditions. The paper does not attribute that success to bacteria’s small size, rapid proliferation, or ease of cultivation. (LLM, conf=0.84)

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Authors
Alvarado-Campo, K. L., Quintero, M., Cuadrado-Cano, B., Montoya-Giraldo, M., Otero-Tejada, E. L., Blandón, L., Sánchez, O., Zuleta-Correa, A., & Gómez-León, J.
Affiliations
  • Marine Bioprospecting Line, Evaluation and Use of Marine and Coastal Resources Program–VAR, Marine and Coastal Research Institute–INVEMAR, Santa Marta 470006, Magdalena, Colombia
  • José Benito Vives de Andréis Marine and Coastal Research Institute (CO)
  • Master’s Program in Microbiology, College of Medicine, Universidad de Cartagena, Cartagena de Indias 130014, Bolívar, Colombia
  • Universitat Autònoma de Barcelona (ES)
Corresponding author
Zuleta-Correa, Ana
ORCID
Venue
Microorganisms
Publisher
MDPI AG
Published
2023-11-04
Volume
11
Issue
11
Pages
2708
ISSN
2076-2607 (ISSN-L)
DOI
10.3390/microorganisms11112708
PMC
PMC10673411
OpenAlex
W4388333381
Cited by
26
References
2
Citations by year
2026: 10 · 2025: 10 · 2024: 6
FWCI
1.99
Type
journal article
Language
en
Open access
Licence
Locations
  • Microorganisms (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Dipòsit Digital de Documents de la UAB (Universitat Autònoma de Barcelona) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ministry of Science, Technology, and Innovation (Minciencias)-Colombia BIO and “Fondo Francisco José de Caldas (FFJC)” (75973, 80740-568-2020, 20170110000113)
  • Marine and Coastal Research Institute “José Benito Vives de Andréis” (INVEMAR) (75973, 80740-568-2020, 20170110000113)
  • Ministry of the Environment and Sustainable Development (Minambiente) through the tokens of the National Investment Projects Bank (BPIN) (75973, 80740-568-2020, 20170110000113)
Topics
  • Physical Sciences › Environmental Science › Water Science and Technology › Heavy Metal Pollution Remediation
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
Keywords
heavy metal tolerance, lead removal, cadmium, zinc, marine sediment, coastal sediments, Pseudomonas, Stenotrophomonas, Enterobacter, bioremediation, infrared spectroscopy, sediment metal contamination

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