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- Title
Characterization of Bacterial Isolates from Tailings Pond and Their Resistance to Heavy Metals and Antibiotics.
- Authors
Radojević, I. D.; Ćirković, K. G.; Grujović, M. Ž.; Mladenović, K. G.; Ostojić, A. M.
- Abstract
lWater samples were collected from a tailings pond wastewater site in the Rudnik mountain area, where polymetallic ore flotation processes generate high concentrations of Pb2+, Zn2+, and Cu2+. The study aimed to identify microorganisms resistant to heavy metals and assess their potential for bioremediation. Growth capabilities under varying conditions, including temperature, pH, and NaCl concentrations, were analyzed using a spectrophotometer. Minimal inhibitory and lethal concentrations of tested substances were determined for both planktonic cells and their biofilms. Key isolates, namely Bacillus altitudinis PMFKG-R3, B. pumilus PMFKG-R15, B. cereus PMFKG-R46, Pseudomonas veronii PMFKG-R30, and Pantoea agglomerans PMFKG-R20, demonstrated growth ability at both 22 and 37°C and exhibited halotolerance, albeit sensitivity to acidic pH. Most isolates in both planktonic and biofilm forms displayed notable resistance to heavy metals, particularly Pb2+ and Zn2+, in line with the sampling location. Notably, planktonic cells were sensitive to antibiotics, while biofilms exhibited slightly higher resistance. Promising candidates for bioremediation purposes were identified in P. veronii PMFKG-R30 and P. agglomerans PMFKG-R20, which displayed resistance to heavy metals and sensitivity to antibiotics.
- Subjects
HEAVY metals; BACILLUS cereus; PONDS; ORE deposits; ANTIBIOTICS; BACILLUS (Bacteria); BIOFILMS
- Publication
Applied Biochemistry & Microbiology, 2024, Vol 60, Issue 2, p347
- ISSN
0003-6838
- Publication type
Article
- DOI
10.1134/S0003683824020157